/* ============================================
   Design System - CSS Variables
   ============================================ */
:root {
    /* Colors - Modern Light Theme (Blue & White) */
    --color-bg-primary: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f1f5f9;
    --color-bg-card: #ffffff;
    --color-bg-glass: rgba(37, 99, 235, 0.05);
    --color-bg-hero: #2563eb;

    /* Accent Colors */
    --color-accent-primary: #2563eb;
    --color-accent-secondary: #1d4ed8;
    --color-accent-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --color-accent-glow: rgba(37, 99, 235, 0.15);
    --color-accent-light: #dbeafe;

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Text Colors */
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #ffffff;

    /* Border */
    --color-border: #e2e8f0;
    --color-border-focus: #2563eb;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 4px 20px var(--color-accent-glow);

    /* 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: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.header:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.375rem;
    font-weight: 800;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.logo:hover {
    transform: translateY(-1px);
}

.logo:hover .logo-icon-wrapper {
    transform: rotate(-5deg) scale(1.05);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.logo-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #132cb8 0%, #3b82f6 100%);
    border-radius: 10px;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(19, 44, 184, 0.25);
}

.logo-icon-wrapper .material-symbols-outlined {
    font-size: 22px;
    color: white;
    font-variation-settings: 'FILL' 1, 'wght' 500;
}

.logo-text {
    background: linear-gradient(135deg, #132cb8 0%, #1d4ed8 50%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent-primary);
    background: rgba(37, 99, 235, 0.08);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #132cb8, #3b82f6);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 60%;
}

.nav-link.active {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.nav-link.active::after {
    width: 60%;
}

@media (max-width: 768px) {
    .header-container {
        padding: 0.625rem 1rem;
    }

    .logo {
        font-size: 1.125rem;
    }

    .logo-icon-wrapper {
        width: 32px;
        height: 32px;
        border-radius: 8px;
    }

    .logo-icon-wrapper .material-symbols-outlined {
        font-size: 18px;
    }

    .nav {
        gap: 0.25rem;
    }

    .nav-link {
        padding: 0.375rem 0.625rem;
        font-size: 0.8rem;
    }
}

/* ============================================
   Main Content
   ============================================ */
.main {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    min-height: calc(100vh - 80px);
}

/* ============================================
   Cards & Containers
   ============================================ */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-md);
}

.card-glass {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent-primary);
    color: var(--color-text-inverse);
    border: none;
}

.btn-primary:hover {
    background: var(--color-accent-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
}

.btn-secondary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-secondary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-bg-glass);
    color: var(--color-text-primary);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-xs);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ============================================
   Forms
   ============================================ */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error);
}

/* Checkbox & Radio Labels */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--color-accent-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-text {
    flex: 1;
}

.checkbox-text a {
    color: var(--color-accent-primary);
    text-decoration: underline;
}

.checkbox-text a:hover {
    color: var(--color-accent-secondary);
}

.auth-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.forgot-password-link {
    color: var(--color-accent-primary);
    font-size: var(--font-size-sm);
}

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

/* ============================================
   Avatar & Profile
   ============================================ */
.avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: white;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
}

.avatar-lg {
    width: 80px;
    height: 80px;
    font-size: var(--font-size-2xl);
}

.avatar-xl {
    width: 120px;
    height: 120px;
    font-size: var(--font-size-3xl);
}

/* ============================================
   Badges & Status
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-accent-primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

.badge-error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
}

.badge-admin {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.3), rgba(239, 68, 68, 0.3));
    color: var(--color-warning);
}

/* Verification Badge */
.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-success);
}

.unverified-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Landing Page
   ============================================ */
.landing-hero {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.landing-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
    animation: fadeInUp 0.6s ease-out;
}

.landing-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.landing-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.landing-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.feature-card {
    text-align: center;
    padding: var(--space-xl);
    animation: fadeInUp 0.6s ease-out both;
}

.feature-card:nth-child(1) {
    animation-delay: 0.3s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.4s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.5s;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ============================================
   Auth Pages
   ============================================ */
.auth-container {
    max-width: 420px;
    margin: var(--space-2xl) auto;
    animation: fadeInUp 0.5s ease-out;
}

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

.auth-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.auth-subtitle {
    color: var(--color-text-secondary);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.auth-footer a {
    color: var(--color-accent-primary);
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* 2-Column Auth Layout */
.auth-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: calc(100vh - 80px);
    margin: 0 calc(-1 * var(--space-lg));
}

.auth-hero {
    background: var(--color-bg-hero);
    color: var(--color-text-inverse);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.auth-hero-title .highlight {
    color: #fbbf24;
}

.auth-hero-subtitle {
    font-size: var(--font-size-base);
    opacity: 0.9;
    line-height: 1.7;
}

.auth-hero-stats {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.auth-hero-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    border: 2px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
}

.auth-form-side {
    background: var(--color-bg-secondary);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

.auth-form-header {
    margin-bottom: var(--space-xl);
}

.auth-form-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.auth-form-subtitle {
    color: var(--color-text-secondary);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.social-buttons {
    display: flex;
    gap: var(--space-sm);
}

.btn-social {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    transition: all var(--transition-fast);
}

.btn-social:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-focus);
}

@media (max-width: 768px) {
    .auth-split {
        grid-template-columns: 1fr;
    }

    .auth-hero {
        padding: var(--space-xl);
        min-height: auto;
    }

    .auth-hero-title {
        font-size: var(--font-size-2xl);
    }
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.dashboard-welcome {
    flex: 1;
}

.dashboard-greeting {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.dashboard-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   Profile Page
   ============================================ */
.profile-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.profile-email {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.profile-bio {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.profile-meta {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.profile-actions {
    display: flex;
    gap: var(--space-sm);
}

/* ============================================
   Admin Dashboard
   ============================================ */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.user-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.user-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.user-item:hover {
    background: var(--color-bg-secondary);
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 600;
}

.user-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 1000;
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

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

.toast-error {
    border-color: var(--color-error);
}

.toast-icon {
    font-size: 1.2em;
}

/* ============================================
   File Upload
   ============================================ */
.file-upload {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--color-accent-primary);
    background: var(--color-bg-glass);
}

.file-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-icon {
    font-size: 2rem;
    color: var(--color-text-muted);
}

.file-upload-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ============================================
   Utilities
   ============================================ */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-muted);
}

.text-success {
    color: var(--color-success);
}

.text-error {
    color: var(--color-error);
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-lg {
    font-size: var(--font-size-lg);
}

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

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

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

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

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

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

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

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.hidden {
    display: none;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .header-container {
        padding: var(--space-sm) var(--space-md);
    }

    .main {
        padding: var(--space-lg) var(--space-md);
    }

    .landing-title {
        font-size: var(--font-size-3xl);
    }

    .landing-actions {
        flex-direction: column;
    }

    .profile-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .dashboard-header {
        flex-direction: column;
        text-align: center;
    }

    .nav {
        gap: var(--space-sm);
    }

    .nav-link {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-sm);
    }
}

/* ============================================
   Listing (講座) Components
   ============================================ */
.listing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.listing-card:hover {
    border-color: var(--color-border-focus);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.listing-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.listing-sport-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-glass);
    border-radius: var(--radius-md);
}

.listing-card-info {
    flex: 1;
}

.listing-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.listing-card-meta {
    display: flex;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.listing-card-price {
    text-align: right;
}

.listing-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-accent-primary);
}

.listing-net-price {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.listing-card-body {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.listing-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.listing-card-actions {
    display: flex;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

/* Listing Status Badge */
.status-active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.status-paused {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

.status-draft {
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
}

/* ============================================
   Price Calculator Panel
   ============================================ */
.price-calc-panel {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
}

.price-calc-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
}

.price-calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
}

.price-calc-row.total {
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-sm);
    padding-top: var(--space-md);
}

.price-calc-label {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.price-calc-value {
    font-weight: 600;
}

.price-calc-value.commission {
    color: var(--color-error);
}

.price-calc-value.net {
    font-size: var(--font-size-xl);
    color: var(--color-success);
}

/* ============================================
   Checkbox & Radio Groups
   ============================================ */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.checkbox-item,
.radio-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.checkbox-item:hover,
.radio-item:hover {
    border-color: var(--color-accent-primary);
    background: var(--color-bg-glass);
}

.checkbox-item.checked,
.radio-item.checked {
    border-color: var(--color-accent-primary);
    background: rgba(99, 102, 241, 0.15);
}

.checkbox-item input,
.radio-item input {
    accent-color: var(--color-accent-primary);
}

/* ============================================
   Region Cascade Selector
   ============================================ */
.region-selector {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.region-group {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.region-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    cursor: pointer;
    font-weight: 600;
    background: var(--color-bg-secondary);
    transition: all var(--transition-fast);
}

.region-header:hover {
    background: var(--color-bg-glass);
}

.region-header .expand-icon {
    margin-left: auto;
    transition: transform var(--transition-fast);
}

.region-header.expanded .expand-icon {
    transform: rotate(180deg);
}

.region-content {
    padding: var(--space-md);
    display: none;
}

.region-content.show {
    display: block;
}

.pref-group {
    margin-bottom: var(--space-md);
}

.pref-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    cursor: pointer;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.pref-header:hover {
    background: var(--color-bg-glass);
}

.city-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    padding-left: var(--space-xl);
    margin-top: var(--space-sm);
}

.city-item {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.city-item:hover {
    border-color: var(--color-accent-primary);
}

.city-item.selected {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--color-accent-primary);
}

/* ============================================
   Listing Grid
   ============================================ */
.listing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.listing-empty {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
}

.listing-empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 48px;
    height: 24px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-switch.active {
    background: var(--color-success);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-switch.active::after {
    left: 26px;
}

/* ============================================
   Search Page
   ============================================ */
.search-page {
    animation: fadeInUp 0.5s ease-out;
}

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

.search-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.search-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.search-filters {
    position: sticky;
    top: 100px;
}

.filter-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

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

.filter-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.filter-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.filter-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.price-input {
    width: 80px;
    padding: var(--space-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    text-align: center;
}

.price-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.price-separator {
    color: var(--color-text-muted);
}

.price-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.btn-block {
    width: 100%;
}

/* Search Results */
.search-results {
    min-height: 400px;
}

.results-header {
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-muted);
}

.no-results p:first-child {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

/* Search Result Card */
.search-result-card {
    cursor: pointer;
    transition: all var(--transition-base);
}

.search-result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent-primary);
}

.result-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

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

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

.instructor-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.verified-mini {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: var(--color-success);
    color: white;
    font-size: 10px;
    border-radius: var(--radius-full);
}

.result-price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-accent-primary);
}

.result-price .price-unit {
    font-size: var(--font-size-sm);
    font-weight: 400;
}

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

.result-sport {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.result-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.result-level {
    margin-bottom: var(--space-sm);
}

.result-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-accent-primary);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.result-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.result-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.result-regions {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ============================================
   Listing Detail Page
   ============================================ */
.detail-page {
    animation: fadeInUp 0.5s ease-out;
}

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

.detail-container {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--space-xl);
    align-items: start;
}

.detail-main {
    padding: var(--space-xl);
}

.detail-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.detail-instructor {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.instructor-details h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.detail-sport-level {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.sport-badge,
.level-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-accent-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
}

.level-badge {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.detail-section {
    margin-bottom: var(--space-xl);
}

.detail-section h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.detail-description {
    line-height: 1.8;
    white-space: pre-wrap;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
}

/* Detail Sidebar */
.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: sticky;
    top: 100px;
}

.detail-sidebar .card {
    padding: var(--space-lg);
}

.price-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-color: rgba(99, 102, 241, 0.3);
}

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

.price-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.price-amount {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-amount .price-unit {
    font-size: var(--font-size-base);
    font-weight: 400;
}

.price-duration {
    text-align: center;
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.detail-sidebar .card h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.region-list {
    list-style: none;
    font-size: var(--font-size-sm);
}

.region-list li {
    padding: var(--space-xs) 0;
}

.contact-btn {
    margin-top: var(--space-sm);
}

.text-muted {
    color: var(--color-text-muted);
}

.text-sm {
    font-size: var(--font-size-sm);
}

.error-page {
    text-align: center;
    padding: var(--space-2xl);
    max-width: 500px;
    margin: var(--space-2xl) auto;
}

.error-page h2 {
    margin-bottom: var(--space-md);
}

.error-page p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

/* Responsive */
@media (max-width: 900px) {
    .search-container {
        grid-template-columns: 1fr;
    }

    .search-filters {
        position: static;
    }

    .detail-container {
        grid-template-columns: 1fr;
    }

    .detail-sidebar {
        position: static;
    }
}

/* ============================================
   Auth Enhancements - Social Login & Forms
   ============================================ */

/* Social Login Section */
.social-login-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid var(--color-border);
}

.btn-google {
    background: #fff;
    color: #3c4043;
}

.btn-google:hover {
    background: #f8f9fa;
    box-shadow: var(--shadow-md);
}

.btn-twitter {
    background: #000;
    color: #fff;
}

.btn-twitter:hover {
    background: #1a1a1a;
    box-shadow: var(--shadow-md);
}

.social-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Auth Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* Password Strength Indicator */
.password-strength {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-sm);
}

.password-strength-bar {
    flex: 1;
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.password-strength-fill {
    height: 100%;
    width: 0;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.password-strength-fill.strength-weak {
    background: var(--color-error);
}

.password-strength-fill.strength-fair {
    background: var(--color-warning);
}

.password-strength-fill.strength-good {
    background: #22c55e;
}

.password-strength-fill.strength-strong {
    background: var(--color-success);
}

.password-strength-text {
    font-size: var(--font-size-xs);
    font-weight: 500;
    min-width: 60px;
    text-align: right;
}

.password-strength-text.strength-weak {
    color: var(--color-error);
}

.password-strength-text.strength-fair {
    color: var(--color-warning);
}

.password-strength-text.strength-good {
    color: #22c55e;
}

.password-strength-text.strength-strong {
    color: var(--color-success);
}

/* Password Match Hints */
.match-success {
    color: var(--color-success) !important;
}

.match-error {
    color: var(--color-error) !important;
}

/* Custom Checkbox - Use native checkbox */
.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--color-accent-primary);
    cursor: pointer;
    flex-shrink: 0;
}

/* Terms Links */
.terms-link {
    color: var(--color-accent-primary);
    text-decoration: underline;
}

.terms-link:hover {
    color: var(--color-accent-secondary);
}

/* Auth Options Row */
.auth-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.remember-me {
    font-size: var(--font-size-sm);
}

.forgot-password-link {
    font-size: var(--font-size-sm);
    color: var(--color-accent-primary);
}

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

/* Block Button */
.btn-block {
    width: 100%;
}

/* Password Reset Hint */
.password-reset-hint {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* Success Icon Large */
.success-icon-large {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

/* Form Row */
.form-row {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

/* Toast Info Style */
.toast-info {
    border-color: var(--color-info);
}

.toast-info .toast-icon {
    color: var(--color-info);
}

/* ============================================
   Search Tabs
   ============================================ */
.search-tab {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-tab:hover {
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-accent-primary);
}

.search-tab.active {
    background: linear-gradient(135deg, var(--color-accent-primary), #1d4ed8);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
}

.search-tab.active .material-symbols-outlined {
    color: #ffffff;
}

@media (prefers-color-scheme: dark) {
    .search-tab.active {
        background: linear-gradient(135deg, #3b82f6, #6366f1);
        box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    }
}

/* Quick Sport Filter Chips */
.quick-sport-filter.active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

/* Details/Summary Accordion */
details summary {
    list-style: none;
}

details summary::-webkit-details-marker {
    display: none;
}

details[open] summary {
    background: rgba(37, 99, 235, 0.02);
}