/* public/css/style.css */

/* ==================== CSS Variables ==================== */
:root {
    /* Brand Colors */
    --primary: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-dark: #1e40af;
    --secondary: #059669;
    --accent: #f59e0b;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* LINE Brand */
    --line-green: #06C755;
    --line-green-dark: #00b850;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', 'Zen Kaku Gothic New', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    min-height: 100vh;
}

/* ==================== App Container ==================== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ==================== Header ==================== */
.header {
    background: var(--white);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ==================== Progress Bar ==================== */
.progress-container {
    background: var(--white);
    padding: var(--space-lg) var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--gray-200);
}

.progress-bar {
    max-width: 800px;
    margin: 0 auto var(--space-lg);
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    width: 20%;
    transition: width var(--transition-slow);
    border-radius: var(--radius-full);
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
    flex: 1;
}

.step-circle {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gray-200);
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition);
}

.step.active .step-circle {
    background: var(--primary);
    color: var(--white);
}

.step.completed .step-circle {
    background: var(--success);
    color: var(--white);
}

.step.completed .step-circle::after {
    content: '✓';
}

.step-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
    text-align: center;
}

.step.active .step-label {
    color: var(--primary);
    font-weight: 600;
}

.step.completed .step-label {
    color: var(--success);
}

/* ==================== Main Content ==================== */
.main-content {
    flex: 1;
    padding: var(--space-xl) var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.form-section {
    display: none;
    animation: fadeIn var(--transition-slow);
}

.form-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--gray-600);
    font-size: 1rem;
}

/* ==================== Membership Cards ==================== */
.membership-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
    max-width: 1100px;
    margin: 0 auto;
}

.membership-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.membership-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.membership-card.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}

.membership-card.popular {
    border-color: var(--accent);
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--gray-100);
    color: var(--gray-700);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.card-badge.popular-badge {
    background: linear-gradient(135deg, var(--accent), #f97316);
    color: var(--white);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

.membership-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.card-desc {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--space-md);
}

.card-price {
    margin-bottom: var(--space-md);
}

.price-amount {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
}

.price-period {
    font-size: 1rem;
    color: var(--gray-500);
}

.card-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.card-features li {
    font-size: 0.875rem;
    color: var(--gray-600);
    padding: var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 600;
}

.select-btn {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--gray-200);
    background: var(--white);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--gray-700);
    cursor: pointer;
    transition: all var(--transition);
    margin-top: auto;
}

.select-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.membership-card.selected .select-btn {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* ==================== Form Styles ==================== */
.registration-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: var(--space-xs);
}

.form-input {
    padding: var(--space-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition);
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-input.error {
    border-color: var(--error);
    background: var(--error-light);
}

.form-input.success {
    border-color: var(--success);
}

/* Checkbox Styles */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: 8px;
}

.form-group.has-error .checkbox-label {
    flex-wrap: nowrap;
}

.checkbox-label input {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
}

.terms-checkbox {
    margin-top: var(--space-lg);
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.link:hover {
    text-decoration: underline;
}

/* ==================== Radio Styles ==================== */
.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
    padding: var(--space-sm) 0;
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-label .radio-custom {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
}

/* ==================== Referral Section ==================== */
.referral-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-top: var(--space-xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
    grid-column: 1 / -1;
}

.referral-section.active {
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    border: 1px solid #fcd34d;
    padding: var(--space-lg);
}

.referral-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.referral-section.active .referral-header {
    margin-bottom: var(--space-md);
}

.referral-icon {
    font-size: 1.5rem;
    opacity: 0.6;
    transition: all var(--transition);
}

.referral-section.active .referral-icon {
    font-size: 2rem;
    opacity: 1;
}

.referral-text h4 {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0;
    transition: all var(--transition);
}

.referral-section.active .referral-text h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.referral-text p {
    font-size: 0.8125rem;
    color: var(--gray-500);
    display: none;
}

.referral-section.active .referral-text p {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.referral-toggle {
    margin-bottom: 0;
}

.referral-section.active .referral-toggle {
    margin-bottom: var(--space-md);
}

.referral-inputs {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.referral-inputs.hidden {
    display: none;
}

.referral-validation {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
}

.referral-validation.checking {
    background: var(--info-light);
    color: var(--info);
}

.referral-validation.valid {
    background: var(--success-light);
    color: var(--secondary);
}

.referral-validation.invalid {
    background: var(--error-light);
    color: var(--error);
}

.referral-validation:empty {
    display: none;
}

.referral-bonus {
    margin-top: var(--space-md);
}

.referral-bonus.hidden {
    display: none;
}

.bonus-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    box-shadow: var(--shadow);
}

.bonus-icon {
    font-size: 2rem;
}

.bonus-content {
    flex: 1;
}

.bonus-title {
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: var(--space-sm);
}

.bonus-detail {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--gray-700);
    padding: var(--space-xs) 0;
}

.bonus-detail strong {
    color: var(--accent);
}

/* ==================== Address Section ==================== */
.address-section-header {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--gray-200);
}

.address-section-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 var(--space-xs);
}

.address-section-header .section-description {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin: 0;
}

.address-type-header {
    margin-top: 0;
    margin-bottom: var(--space-sm);
}

.address-type-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.address-type-badge.personal {
    background: var(--info-light);
    color: var(--info);
}

.address-type-badge.work {
    background: var(--gray-100);
    color: var(--gray-700);
}

/* ==================== Work Address - Simple Style ==================== */
.work-address-toggle-simple {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    margin-top: var(--space-lg);
}

.work-address-toggle-simple .input-hint {
    margin-left: 28px;
}

.work-address-fields-simple {
    grid-column: 1 / -1; 
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
    animation: slideDown 0.3s ease;
}

.work-address-fields-simple.hidden {
    display: none;
}

.work-address-fields-simple .form-grid {
    margin-top: var(--space-md);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mailing Preference - Simple Style */
.mailing-preference-simple {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

.mailing-options-simple {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

@media (min-width: 480px) {
    .mailing-options-simple {
        flex-direction: row;
        gap: var(--space-xl);
    }
}

/* ==================== Payment Section ==================== */
.payment-summary {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--space-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.9375rem;
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-row.total {
    padding-top: var(--space-md);
    margin-top: var(--space-sm);
    border-top: 2px solid var(--gray-200);
    font-weight: 700;
    font-size: 1.125rem;
}

.summary-row.referral-row {
    color: var(--secondary);
}

.bonus-text {
    color: var(--secondary);
    font-weight: 600;
}

.summary-row.hidden {
    display: none;
}

.payment-methods {
    max-width: 500px;
    margin: 0 auto var(--space-xl);
}

.payment-methods h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.payment-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: var(--space-sm);
}

.payment-option:hover {
    border-color: var(--gray-300);
}

.payment-option.active {
    border-color: var(--primary);
    background: rgba(30, 58, 138, 0.02);
}

.payment-radio {
    flex-shrink: 0;
}

.payment-radio input {
    display: none;
}

.payment-radio .radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.payment-option.active .payment-radio .radio-custom {
    border-color: var(--primary);
}

.payment-option.active .payment-radio .radio-custom::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

.payment-icon {
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    flex-shrink: 0;
}

.payment-icon svg {
    width: 20px;
    height: 20px;
}

.payment-info {
    flex: 1;
}

.payment-info h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
}

.payment-info p {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.payment-badges {
    display: flex;
    gap: var(--space-xs);
}

.payment-badges img {
    height: 24px;
    width: auto;
}

/* Card Form */
.card-form {
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.card-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.stripe-element {
    padding: var(--space-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    transition: all var(--transition);
}

.stripe-element.StripeElement--focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.stripe-element.StripeElement--invalid {
    border-color: var(--error);
}

/* Step3のレイアウト修正 */
#step3 {
    max-width: 600px;
    margin: 0 auto;
}

#step3 .payment-summary {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
}

#step3 .payment-methods {
    max-width: 100%;
}

#step3 .card-form {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
}

#step3 .konbini-form,
#step3 .bank-form {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
}

#step3 .form-actions {
    max-width: 100%;
}

/* Stripe Security Notice */
.stripe-security-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.stripe-security-notice .security-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--success-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
}

.stripe-security-notice .security-text p {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.5;
}

.stripe-security-notice .security-text p:first-child {
    color: var(--gray-800);
    margin-bottom: var(--space-xs);
}

.stripe-security-notice .security-text a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.stripe-security-notice .security-text a:hover {
    text-decoration: underline;
}

/* Konbini & Bank Forms */
.konbini-form,
.bank-form {
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.konbini-form.hidden,
.bank-form.hidden {
    display: none;
}

.konbini-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.konbini-option {
    padding: var(--space-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.konbini-option:hover,
.konbini-option.selected {
    border-color: var(--primary);
}

.konbini-option img {
    height: 32px;
    margin-bottom: var(--space-xs);
}

.bank-info {
    background: var(--gray-50);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.bank-info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-xs) 0;
}

.bank-info-row span:first-child {
    color: var(--gray-600);
}

.bank-info-row span:last-child {
    font-weight: 600;
}

/* ==================== LINE Connect Section ==================== */
.line-connect-page {
    max-width: 600px;
    margin: 0 auto;
}

.line-benefits {
    margin-bottom: var(--space-xl);
}

.line-benefit-card.main {
    background: linear-gradient(135deg, var(--line-green), #00b850);
    color: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-lg);
}

.benefit-bonus {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.benefit-bonus .bonus-amount {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    line-height: 1;
}

.benefit-bonus .bonus-unit {
    font-size: 1.25rem;
    font-weight: 600;
}

.benefit-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.benefit-text p {
    font-size: 1rem;
    opacity: 0.9;
}

.line-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.line-feature {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    gap: var(--space-md);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.feature-text p {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.line-connect-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.btn-line-connect-large {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--line-green);
    color: var(--white);
    border: none;
    padding: var(--space-lg) var(--space-2xl);
    border-radius: var(--radius-full);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
}

.btn-line-connect-large:hover {
    background: var(--line-green-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-line-connect-large svg {
    flex-shrink: 0;
}

.btn-text {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 0.875rem;
    cursor: pointer;
    padding: var(--space-sm);
    transition: color var(--transition);
}

.btn-text:hover {
    color: var(--gray-700);
    text-decoration: underline;
}

/* ==================== Completion Section ==================== */
.completion-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.success-animation {
    margin-bottom: var(--space-xl);
}

.checkmark {
    width: 80px;
    height: 80px;
}

.checkmark-circle {
    stroke: var(--success);
    stroke-width: 2;
    stroke-dasharray: 157;
    stroke-dashoffset: 157;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
    stroke: var(--success);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.4s forwards;
}

@keyframes stroke {
    100% { stroke-dashoffset: 0; }
}

.completion-content h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.completion-message {
    color: var(--gray-600);
    margin-bottom: var(--space-xl);
}

/* Bonus Summary */
.bonus-summary {
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    text-align: left;
    border: 1px solid #fcd34d;
}

.bonus-summary-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
    text-align: center;
}

.bonus-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.bonus-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--white);
    border-radius: var(--radius-md);
}

.bonus-item span {
    color: var(--gray-700);
}

.bonus-item strong {
    color: var(--accent);
    font-weight: 700;
}

.bonus-item.hidden {
    display: none;
}

.bonus-total {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--white);
    border-radius: var(--radius-md);
    border: 2px solid var(--accent);
}

.bonus-total span {
    font-weight: 600;
    color: var(--gray-900);
}

.bonus-total strong {
    font-size: 1.25rem;
    color: var(--accent);
}

/* Next Steps */
.next-steps {
    text-align: left;
    margin-bottom: var(--space-xl);
}

.next-steps h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
    text-align: center;
}

.step-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.next-step-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.next-step-card .step-number {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto var(--space-md);
}

.next-step-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.next-step-card p {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

/* LINE CTA on Complete */
.line-cta {
    background: var(--white);
    border: 2px solid var(--line-green);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.line-cta.hidden {
    display: none;
}

.line-cta-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-align: left;
}

.line-icon-large svg {
    width: 40px;
    height: 40px;
}

.line-cta-content h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.line-cta-content p {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.btn-line {
    background: var(--line-green);
    color: var(--white);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition);
    white-space: nowrap;
    border: none;
    cursor: pointer;
}

.btn-line:hover {
    background: var(--line-green-dark);
}

/* ==================== Buttons ==================== */
.form-actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-primary:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    white-space: nowrap;
}

.btn-loader {
    display: inline-flex;
}

.btn-loader.hidden {
    display: none;
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==================== Modal ==================== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    max-height: 80vh;
    width: 90%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    padding: var(--space-sm);
    cursor: pointer;
    color: var(--gray-500);
    transition: color var(--transition);
}

.modal-close:hover {
    color: var(--gray-900);
}

.modal-close svg {
    width: 24px;
    height: 24px;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
}

.modal-body h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: var(--space-lg) 0 var(--space-sm);
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    color: var(--gray-600);
    line-height: 1.7;
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--gray-800);
    color: var(--gray-400);
    padding: var(--space-xl) var(--space-lg);
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-content p {
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

/* ==================== Utility Classes ==================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--space-lg);
}

.mb-lg {
    margin-bottom: var(--space-lg);
}

/* ==================== Input Helpers ==================== */
.input-hint {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 4px;
}

.input-with-button {
    display: flex;
    gap: var(--space-sm);
}

.input-with-button .form-input {
    flex: 1;
}

/* Step Text */
.step-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--space-md);
}

/* Member Info Card (Completion Page) */
.member-info-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.member-info-card .info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.member-info-card .info-row:last-child {
    border-bottom: none;
}

.member-info-card .info-label {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.member-info-card .info-value {
    color: var(--gray-800);
    font-weight: 500;
}

/* Card Badges (Payment Step) */
.card-badge-img {
    display: inline-block;
    padding: 2px 6px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
}

/* Card Errors */
.card-errors {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background: var(--error-light);
    border-radius: var(--radius-sm);
}

/* Info Box */
.info-box {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--info-light);
    border-radius: var(--radius-md);
    /*margin: var(--space-md) 0;*/
}

.info-box svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--info);
}

.info-box p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--gray-700);
}

/* ==================== Form Validation Styles ==================== */

/* エラーメッセージコンテナ（ボタン上部） */
.form-errors-container {
    background: var(--error-light);
    border: 1px solid var(--error);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-lg);
    display: none;
    width: 100%;
    box-sizing: border-box;
    grid-column: 1 / -1;
}

.form-errors-container.show {
    display: block;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.form-errors-container .error-title {
    font-weight: 600;
    color: var(--error);
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
}

.form-errors-container .error-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.form-errors-container .error-list li {
    color: var(--error);
    font-size: 0.875rem;
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.form-errors-container .error-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--error);
}

/* フォーム要素のエラー状態 */
.form-group.has-error .form-input {
    border-color: var(--error);
    background-color: #fef2f2;
}

.form-group.has-error .form-input:focus {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-group.has-error .form-label {
    color: var(--error);
}

/* チェックボックスグループのエラー状態 */
.form-group.has-error .checkbox-group {
    padding: var(--space-sm);
    border: 2px solid var(--error);
    border-radius: var(--radius-md);
    background-color: #fef2f2;
}

/* 規約チェックボックスのエラー状態 */
#termsGroup.has-error .terms-checkbox {
    padding: var(--space-sm);
    border: 2px solid var(--error);
    border-radius: var(--radius-md);
    background-color: #fef2f2;
}

#termsGroup.has-error .checkbox-custom {
    border-color: var(--error);
}

/* インラインエラーメッセージ（各フィールド下） */
.field-error {
    color: var(--error);
    font-size: 0.8125rem;
    margin-top: var(--space-xs);
    display: none;
    width: 100%;
}

.field-error.show {
    display: block;
}

/* 成功状態 */
.form-group.has-success .form-input {
    border-color: var(--success);
    background-color: #f0fdf4;
}

/* メール重複チェック中のローディング */
.checking-indicator {
    display: none;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
}

.checking-indicator.show {
    display: flex;
}

.checking-indicator .mini-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--gray-300);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* 住所検索メッセージの横幅調整 */
#address-message {
    width: 100%;
    margin-top: var(--space-xs);
}

/* ===================================
   Password Input Styles
   =================================== */

.input-with-toggle {
    position: relative;
    width: 100%;
}

.input-with-toggle .form-input {
    width: 100%;
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.password-toggle:hover {
    color: var(--gray-600);
}

.password-toggle svg {
    width: 20px;
    height: 20px;
}

/* パスワード強度インジケーター */
.password-strength {
    margin-top: 8px;
}

.password-strength .strength-bar-container {
    height: 4px;
    background: var(--gray-200);
    border-radius: 2px;
    overflow: hidden;
}

.password-strength .strength-bar {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease, background-color 0.3s ease;
    width: 0%;
}

.password-strength.weak .strength-bar {
    width: 25%;
    background-color: #ef4444;
}

.password-strength.fair .strength-bar {
    width: 50%;
    background-color: #f59e0b;
}

.password-strength.good .strength-bar {
    width: 75%;
    background-color: #10b981;
}

.password-strength.strong .strength-bar {
    width: 100%;
    background-color: #059669;
}

.password-strength .strength-text {
    font-size: 0.75rem;
    margin-top: 4px;
    color: var(--gray-500);
}

.password-strength.weak .strength-text {
    color: #ef4444;
}

.password-strength.fair .strength-text {
    color: #f59e0b;
}

.password-strength.good .strength-text {
    color: #10b981;
}

.password-strength.strong .strength-text {
    color: #059669;
}

/* 紹介者セクションのエラー状態 */
.referral-section.has-error {
    border-color: var(--error) !important;
    background: linear-gradient(135deg, #fef2f2 0%, #fff 100%) !important;
}

.referral-section.has-error .referral-header {
    background: rgba(239, 68, 68, 0.1);
}

/* ==================== Student Card Special Styles ==================== */

.membership-card[data-type="student"] {
    position: relative;
}

.card-popular-ribbon {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent) 0%, #f97316 100%);
    color: var(--white);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
}

.membership-card[data-type="student"] .card-desc {
    font-size: 0.8125rem;
    line-height: 1.6;
}

.membership-card[data-type="student"] .card-desc .highlight-text {
    color: var(--primary);
    font-weight: 600;
    background: linear-gradient(transparent 60%, #dbeafe 60%);
    padding: 0 2px;
}

.student-benefit-notice {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--warning-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    margin: 0 0 var(--space-md);
    font-size: 0.8125rem;
    color: #92400e;
}

.student-benefit-notice .benefit-icon {
    font-size: 1.25rem;
}

/* ==================== Multi-Year Selection Styles ==================== */

.multi-year-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow);
}

.multi-year-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.multi-year-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.multi-year-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    background: var(--info-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--gray-700);
    text-align: left;
    line-height: 1.6;
}

.multi-year-notice .notice-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.year-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.year-option {
    cursor: pointer;
}

.year-option input[type="radio"] {
    display: none;
}

.year-option-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.year-option:hover .year-option-content {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

.year-option input[type="radio"]:checked + .year-option-content {
    border-color: var(--primary);
    background: rgba(30, 58, 138, 0.05);
}

/* Recommended & Best Value Styling */
.year-option.recommended .year-option-content {
    border-color: var(--accent);
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

.year-option.recommended input[type="radio"]:checked + .year-option-content {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.year-option.best-value .year-option-content {
    border-color: var(--success);
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
}

.year-option.best-value input[type="radio"]:checked + .year-option-content {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.year-option-radio {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.year-option input[type="radio"]:checked + .year-option-content .year-option-radio {
    border-color: var(--primary);
}

.year-option input[type="radio"]:checked + .year-option-content .year-option-radio::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
}

.year-option-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.year-number {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.recommend-badge {
    background: var(--accent);
    color: var(--white);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
}

.best-badge {
    background: var(--success);
    color: var(--white);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
}

.year-price {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.original-price {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.discount-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--error);
}

.discount-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--error);
    color: var(--white);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: var(--space-sm);
    min-width: 80px;
    text-align: center;
}

.discount-tag.big {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    padding: 6px 16px;
    font-size: 0.9375rem;
    min-width: 110px;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    }
    50% {
        box-shadow: 0 4px 16px rgba(16, 185, 129, 0.5);
    }
}

.year-bonus {
    background: var(--success-light);
    color: var(--success);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.year-bonus.special {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    font-weight: 700;
}

.multi-year-benefits {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}

.multi-year-benefits .benefit-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--gray-700);
}

.multi-year-benefits .benefit-check {
    color: var(--success);
    font-weight: 700;
}

/* Updated Payment Summary */
.payment-summary-updated {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--space-xl);
}

.payment-summary-updated .summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.9375rem;
}

.payment-summary-updated .summary-row:last-child {
    border-bottom: none;
}

.payment-summary-updated .summary-row.total {
    padding-top: var(--space-md);
    margin-top: var(--space-sm);
    border-top: 2px solid var(--gray-200);
    font-weight: 700;
    font-size: 1.25rem;
}

.payment-summary-updated .discount-row {
    color: var(--error);
}

.payment-summary-updated .discount-amount {
    font-weight: 600;
}

.payment-summary-updated .hidden {
    display: none;
}

.payment-summary-updated .summary-row:nth-child(1),
.payment-summary-updated .summary-row:nth-child(2) {
    font-weight: 700;
    color: #0f172a;
    font-size: 1.15em;
}

/* ==================== Inline Message Styles ==================== */
.inline-message-container {
    min-height: 0;
}

.inline-message {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 8px;
    margin: 12px auto;
    font-size: 14px;
    animation: slideIn 0.3s ease;
    max-width: 700px;
    width: 100%;
    box-sizing: border-box;
}

.inline-message-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.inline-message-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.inline-message-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.inline-message-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.inline-message-icon {
    font-size: 16px;
    font-weight: bold;
    flex-shrink: 0;
}

.inline-message-text {
    flex: 1;
}

.inline-message.fade-out {
    animation: fadeOut 0.3s ease forwards;
}

@keyframes slideIn {
    from { 
        opacity: 0; 
        transform: translateY(-10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
    .header {
        padding: var(--space-sm) var(--space-md);
    }
    
    .logo-sub {
        display: none;
    }
    
    .progress-container {
        padding: var(--space-md);
    }
    
    .step-label {
        font-size: 0.625rem;
    }
    
    .step-circle {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
    
    .main-content {
        padding: var(--space-lg) var(--space-md);
    }
    
    .section-header h1 {
        font-size: 1.5rem;
    }
    
    .membership-cards {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .card-row {
        grid-template-columns: 1fr;
    }
    
    .line-features-grid {
        grid-template-columns: 1fr;
    }
    
    .line-benefit-card.main {
        flex-direction: column;
        text-align: center;
    }
    
    .step-cards {
        grid-template-columns: 1fr;
    }
    
    .line-cta {
        flex-direction: column;
        text-align: center;
    }
    
    .line-cta-content {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .konbini-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .year-option-content {
        flex-wrap: wrap;
    }
    
    .year-bonus {
        width: 100%;
        text-align: center;
        margin-top: var(--space-sm);
    }
    
    .multi-year-benefits {
        flex-direction: column;
        align-items: flex-start;
    }

    .multi-year-notice {
        white-space: normal;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .referral-header {
        flex-direction: column;
        text-align: center;
    }
    
    .btn-line-connect-large {
        width: 100%;
        padding: var(--space-md) var(--space-lg);
    }
}

/* ==================== 会員種別切り替えリンク ==================== */
.membership-switch-links {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px dashed var(--gray-300);
}

.membership-switch-links .switch-hint {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: var(--space-sm);
}

.membership-switch-links .switch-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
}

.membership-switch-links .switch-link {
    font-size: 0.875rem;
    color: var(--primary);
    text-decoration: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}

.membership-switch-links .switch-link:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.membership-switch-links .switch-link.hidden {
    display: none;
}

/* ==================== 条件付き入力セクション ==================== */
.conditional-section {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
    animation: slideDown 0.3s ease;
}

.conditional-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--gray-200);
}

.conditional-section-header .section-icon {
    font-size: 1.25rem;
}

.conditional-section .form-grid {
    gap: var(--space-md);
}

/* 学生フィールド */
.student-fields.hidden,
.associate-fields.hidden {
    display: none;
}

/* テキストエリア */
.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* 興味分野のチェックボックス */
.interest-group {
    gap: var(--space-md);
}

/* 資格チェックボックスの表示制御用 */
.checkbox-label.qual-hidden {
    display: none !important;
}

/* 保有資格エラー表示 */
#qualificationError.show {
    display: block;
    margin-top: var(--space-sm);
}

/* ==================== LINE QR Modal Styles ==================== */

.line-qr-content {
    max-width: 420px;
    width: 90%;
}

.line-qr-body {
    text-align: center;
    padding: 1.5rem;
}

.qr-instructions {
    margin-bottom: 1.5rem;
}

.qr-instruction-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.qr-instructions p {
    color: #4b5563;
    font-size: 1rem;
    margin: 0;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.qr-code-wrapper {
    position: relative;
    padding: 16px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 2px solid #06C755;
}

.qr-code-wrapper img {
    display: block;
    width: 200px;
    height: 200px;
}

.qr-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 4px;
    border-radius: 8px;
}

.qr-steps {
    text-align: left;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 12px;
}

.qr-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
}

.qr-step:not(:last-child) {
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 12px;
    margin-bottom: 4px;
}

.qr-step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #06C755;
    color: white;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.qr-step-text {
    font-size: 14px;
    color: #374151;
    line-height: 1.5;
}

.qr-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 1rem;
    background: #eff6ff;
    border-radius: 12px;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.qr-status.success {
    background: #ecfdf5;
}

.qr-status.timeout {
    background: #fef3c7;
}

.qr-status-icon {
    position: relative;
    font-size: 1.5rem;
}

.qr-status-icon.success span {
    color: #10b981;
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 2px solid #3b82f6;
    border-radius: 50%;
    animation: pulse-ring 1.5s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

.qr-status-text {
    font-size: 14px;
    color: #1e40af;
}

.qr-status-text.success {
    color: #065f46;
    font-weight: 600;
}

.qr-bonus-reminder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 8px;
    font-size: 14px;
    color: #92400e;
}

.qr-bonus-reminder .bonus-icon {
    font-size: 1.2rem;
}

/* モバイル対応 */
@media (max-width: 480px) {
    .line-qr-content {
        width: 95%;
        margin: 1rem;
    }
    
    .line-qr-body {
        padding: 1rem;
    }
    
    .qr-code-wrapper img {
        width: 180px;
        height: 180px;
    }
}

/* ==================== Step 4: Bank Transfer Registration Styles ==================== */

.bank-registration-page {
    max-width: 800px;
    margin: 0 auto;
}

.bank-registration-info {
    margin-bottom: var(--space-xl);
}

.bank-registration-info .info-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: var(--radius-xl);
    border: 1px solid #bfdbfe;
}

.bank-registration-info .info-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.bank-registration-info .info-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.bank-registration-info .info-content p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.7;
    margin: 0;
}

/* Registration Options */
.bank-registration-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .bank-registration-options {
        grid-template-columns: 1fr 1fr;
    }
}

.registration-option {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: all var(--transition);
}

.registration-option:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

.option-header {
    padding: var(--space-md) var(--space-lg);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.option-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-bottom: var(--space-sm);
}

.option-badge.personal {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.option-badge.corporate {
    background: linear-gradient(135deg, var(--gray-600) 0%, var(--gray-500) 100%);
    color: var(--white);
}

.option-header h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.option-content {
    padding: var(--space-lg);
}

/* QR Code Section */
.qr-section {
    text-align: center;
    margin-bottom: var(--space-md);
}

.qr-code-wrapper-bank {
    display: inline-block;
    padding: var(--space-md);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 2px solid var(--gray-200);
}

.qr-code-wrapper-bank img {
    display: block;
    width: 150px;
    height: 150px;
}

.qr-hint {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: var(--space-sm);
}

/* Divider OR */
.divider-or {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.divider-or::before,
.divider-or::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-300);
}

.divider-or span {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* Link Section */
.link-section {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.btn-bank-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-bank-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-bank-link svg {
    flex-shrink: 0;
}

/* Steps Guide */
.steps-guide {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    border: 1px solid var(--gray-200);
}

.steps-guide h5 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 var(--space-md);
}

.bank-steps {
    list-style: none;
    margin: 0;
    padding: 0;
}

.bank-steps li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.bank-steps li:not(:last-child) {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-sm);
}

.bank-steps .step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
}

.bank-steps .step-content {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
    line-height: 1.6;
}

.code-highlight {
    display: inline-block;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.9375rem;
    font-weight: 700;
    border: 1px solid #fcd34d;
}

.steps-note {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin: var(--space-md) 0 0;
    font-style: italic;
}

/* Corporate Section */
.corporate-info {
    margin-bottom: var(--space-lg);
}

.corporate-info p {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    width: 100%;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.btn-download:hover {
    background: var(--gray-50);
    border-color: var(--primary);
    color: var(--primary);
}

.mail-address-box {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    border: 1px solid var(--gray-200);
}

.mail-address-box h5 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 var(--space-sm);
}

.mail-address-box address {
    font-style: normal;
    font-size: 0.875rem;
    color: var(--gray-700);
    line-height: 1.7;
}

/* Bank Registration Actions */
.bank-registration-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

.bank-registration-actions .btn-large {
    min-width: 300px;
}

.skip-note {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin: 0;
}

/* ==================== Step 5: Completion Section Styles ==================== */

.completion-section {
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    text-align: center;
}

.completion-section.hidden {
    display: none;
}

.completion-divider {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gray-300), transparent);
    margin-bottom: var(--space-2xl);
}

.completion-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: var(--space-lg) 0 var(--space-md);
}

/* Login Section */
.login-section {
    margin-top: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.btn-login {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-2xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-login svg {
    flex-shrink: 0;
}

.login-hint {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin: 0;
}

/* Success Animation Updates */
.completion-section .success-animation {
    margin-bottom: 0;
}

.completion-section .checkmark {
    width: 72px;
    height: 72px;
}

/* Member Info Card in Completion */
.completion-section .member-info-card {
    margin: var(--space-lg) auto;
}

.completion-section .bonus-summary {
    margin: var(--space-lg) auto;
    max-width: 400px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .bank-registration-options {
        grid-template-columns: 1fr;
    }
    
    .registration-option {
        margin-bottom: var(--space-md);
    }
    
    .bank-registration-actions .btn-large {
        min-width: auto;
        width: 100%;
    }
    
    .btn-login {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== Step 5 LINE Connect Section Adjustments ==================== */

#step5 .line-connect-page {
    margin-bottom: 0;
}

#step5 .section-header {
    margin-bottom: var(--space-xl);
}

/* When completion is shown, reduce LINE section prominence */
#step5.has-completion .line-connect-page {
    opacity: 0.7;
    pointer-events: none;
}

#step5.has-completion .line-connect-page::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-xl);
}

/* Hide LINE skip button after completion shows */
#step5.has-completion .btn-text {
    display: none;
}

/* ==================== Birthdate Input Styles ==================== */
.birthdate-inputs {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.birthdate-field {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.birthdate-field select {
    min-width: 80px;
}

.birthdate-field:first-child select {
    min-width: 100px;
}

.birthdate-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    flex-shrink: 0;
}

/* 生年月日の成功状態 */
.form-group.has-success .birthdate-inputs select {
    border-color: var(--success);
    background-color: #f0fdf4;
}

/* エラー状態 */
.form-group.has-error .birthdate-inputs select {
    border-color: var(--error);
    background-color: #fef2f2;
}

/* レスポンシブ対応 */
@media (max-width: 480px) {
    .birthdate-inputs {
        flex-wrap: wrap;
    }
    
    .birthdate-field {
        flex: 1;
        min-width: 80px;
    }
    
    .birthdate-field select {
        width: 100%;
        min-width: unset;
    }
}

/* 支払いタイミング表示 */
.payment-timing {
    font-size: 12px;
    color: #6b7280;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.timing-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.timing-badge.instant {
    background: #dcfce7;
    color: #166534;
}

.timing-badge.delayed {
    background: #fef3c7;
    color: #92400e;
}

/* ==================== Receipt Section ==================== */
.receipt-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.receipt-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.receipt-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.receipt-text h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 var(--space-xs);
}

.receipt-text p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
    line-height: 1.5;
}

.receipt-section .form-group {
    margin: 0;
}

.receipt-section .form-input {
    max-width: 400px;
}

/* Personal Alt Badge */
.option-badge.personal-alt {
    background: linear-gradient(135deg, var(--info) 0%, #60a5fa 100%);
    color: var(--white);
    margin-left: var(--space-sm);
}

/* Corporate Info List */
.corporate-info .corporate-list {
    list-style: none;
    margin: var(--space-sm) 0 var(--space-md);
    padding: 0;
}

.corporate-info .corporate-list li {
    position: relative;
    padding-left: var(--space-lg);
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: var(--space-xs);
}

.corporate-info .corporate-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

.corporate-info p {
    margin-bottom: var(--space-sm);
}

.corporate-info p:last-of-type {
    margin-bottom: var(--space-md);
}