/**
 * Showdown Tier - Custom Styles
 * Design: Minimal Professional (C案) + Dark/Light Theme Toggle
 * Version: 1.0
 * Created: 2026-01-05
 */

/* ========================================
   1. Theme Variables - Light Mode (Default)
   ======================================== */
:root {
    /* Color System - Monochrome Base + Blue Accent */
    --color-black: #1A1A1A;
    --color-gray-900: #374151;
    --color-gray-600: #6B7280;
    --color-gray-400: #9CA3AF;
    --color-gray-200: #E5E7EB;
    --color-gray-100: #F1F3F5;
    --color-gray-50: #F8F9FA;
    --color-white: #FFFFFF;
    --color-accent: #2563EB;
    --color-accent-light: #3B82F6;

    /* Spacing Scale (8px base) */
    --space-1: 0.5rem;   /* 8px */
    --space-2: 1rem;     /* 16px */
    --space-3: 1.5rem;   /* 24px */
    --space-4: 2rem;     /* 32px */
    --space-5: 2.5rem;   /* 40px */
    --space-6: 3rem;     /* 48px */
    --space-8: 4rem;     /* 64px */
    --space-12: 6rem;    /* 96px */

    /* Typography */
    --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 8px -2px rgba(0, 0, 0, 0.08);
}

/* ========================================
   2. Theme Variables - Dark Mode
   ======================================== */
[data-theme="dark"] {
    --color-black: #E8ECF1;
    --color-gray-900: #B4BAC2;
    --color-gray-600: #8B95A5;
    --color-gray-400: #6B7280;
    --color-gray-200: #2A3140;
    --color-gray-100: #1A1F28;
    --color-gray-50: #0F1419;
    --color-white: #1A1F28;
    --color-accent: #3B82F6;
    --color-accent-light: #60A5FA;

    /* Shadows for dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 8px -2px rgba(0, 0, 0, 0.4);
}

/* ========================================
   3. Base Styles
   ======================================== */
body {
    font-family: var(--font-system);
    background: var(--color-white);
    color: var(--color-gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-black);
    line-height: 1.2;
}

/* ========================================
   4. Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* ========================================
   5. Header Styles
   ======================================== */
.header-primary {
    /* ロイヤルブルー基調のヘッダー（ライト/ダークモード共通） */
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--space-2) 0;
    color: #FFFFFF;
    /* スクロール時に固定表示 */
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ダークモードでも同じロイヤルブルー基調を維持 */
[data-theme="dark"] .header-primary {
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%);
}

.sticky-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background: rgba(30, 64, 175, 0.95);
}

[data-theme="dark"] .sticky-header {
    background: rgba(30, 64, 175, 0.95);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.header-top-home {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.site-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #FFFFFF;
}

.site-subtitle {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: var(--space-1);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-1);
    color: #FFFFFF;
}

.page-subtitle {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb-link {
    color: rgba(255, 255, 255, 0.95);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-link:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.last-updated {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.85);
    font-family: var(--font-mono);
}

/* ========================================
   6. Theme Toggle Button
   ======================================== */
.theme-toggle {
    width: 60px;
    height: 30px;
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    border-radius: 15px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
}

.theme-toggle-slider {
    width: 24px;
    height: 24px;
    background: var(--color-accent);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .theme-toggle-slider {
    left: 32px;
}

/* ========================================
   7. Card Styles
   ======================================== */
.card-primary {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 2px;
    box-shadow: var(--shadow-md);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-primary:hover {
    box-shadow: var(--shadow-lg);
}

/* ========================================
   8. Section Styles
   ======================================== */
.section-header {
    margin-bottom: var(--space-5);
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-1);
    color: var(--color-black);
}

.section-description {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

/* Educational Content - ダークモードでの視認性確保 */
[data-theme="dark"] .text-gray-800 {
    color: var(--color-black) !important;
}

[data-theme="dark"] .text-gray-700 {
    color: var(--color-gray-900) !important;
}

/* ========================================
   9. Table Styles
   ======================================== */
.table-minimal {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 2px;
    overflow: hidden;
}

.table-header {
    background: var(--color-accent);
    color: var(--color-white);
}

.table-minimal thead th {
    padding: var(--space-3);
    text-align: left;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-gray-200);
    color: var(--color-gray-900);
}

/* ダークモードでのテーブルヘッダー視認性確保 */
[data-theme="dark"] .table-minimal thead th {
    color: var(--color-black);
}

.table-minimal tbody tr {
    border-bottom: 1px solid var(--color-gray-100);
    transition: background 0.15s;
}

.table-minimal tbody tr:hover {
    background: var(--color-gray-50);
}

.table-minimal tbody tr:last-child {
    border-bottom: none;
}

.table-minimal tbody td {
    padding: var(--space-3);
    font-size: 0.9375rem;
}

/* ========================================
   10. Tier Badge Styles
   ======================================== */
.tier-badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 2px;
}

.tier-badge-s {
    background: #2563EB;
    color: #FFFFFF;
}

.tier-badge-a {
    background: #374151;
    color: #FFFFFF;
}

.tier-badge-b {
    background: #6B7280;
    color: #FFFFFF;
}

.tier-badge-c {
    background: #9CA3AF;
    color: #1A1A1A;
}

.tier-badge-d {
    background: #E5E7EB;
    color: #1A1A1A;
}

.tier-badge-e {
    background: #F1F3F5;
    color: #1A1A1A;
}

/* ダークモードでの視認性確保 */
[data-theme="dark"] .tier-badge-c,
[data-theme="dark"] .tier-badge-d,
[data-theme="dark"] .tier-badge-e {
    color: #1A1A1A;
}

/* ========================================
   11. Pokemon Card Styles
   ======================================== */
.pokemon-card-minimal {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 2px;
    padding: var(--space-3);
    text-align: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.pokemon-card-minimal:hover {
    background: var(--color-white);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   12. Stat Card Styles
   ======================================== */
.stat-card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 2px;
    padding: var(--space-4);
    text-align: center;
}

.stat-label {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

/* ダークモードでのstat-label視認性確保 */
[data-theme="dark"] .stat-label {
    color: var(--color-gray-900);
}

.stat-value {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-black);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.stat-detail {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-top: var(--space-1);
}

/* ダークモードでのstat-detail視認性確保 */
[data-theme="dark"] .stat-detail {
    color: var(--color-gray-900);
}

/* ========================================
   13. Footer Styles
   ======================================== */
.footer-primary {
    /* ロイヤルブルー基調のフッター（ライト/ダークモード共通） */
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--space-4) 0;
    margin-top: var(--space-8);
    color: #FFFFFF;
}

/* ダークモードでも同じロイヤルブルー基調を維持 */
[data-theme="dark"] .footer-primary {
    background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.9);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.footer-links {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.footer-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

/* ========================================
   14. Button Styles
   ======================================== */
.btn-primary {
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: 2px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

.btn-secondary {
    padding: var(--space-2) var(--space-4);
    background: var(--color-white);
    color: var(--color-accent);
    border: 1px solid var(--color-gray-200);
    border-radius: 2px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

/* ========================================
   15. Link Styles
   ======================================== */
.link-primary {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.link-primary:hover {
    color: var(--color-accent-light);
    text-decoration: underline;
}

/* ========================================
   16. Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

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

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* ========================================
   17. Grid System
   ======================================== */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-5 {
    grid-template-columns: repeat(5, 1fr);
}

/* ========================================
   18. Responsive Grid
   ======================================== */
@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
    }

    .header-top,
    .header-top-home {
        flex-direction: column;
        gap: var(--space-2);
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .site-branding {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid-5 {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* ========================================
   19. Smooth Transitions (Global)
   ======================================== */
* {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: 0.3s;
    transition-timing-function: ease;
}

/* Exclude transitions for specific elements */
*:where(.no-transition) {
    transition: none;
}

/* ========================================
   20. Accessibility
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles */
a:focus,
button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ========================================
   21. Print Styles
   ======================================== */
@media print {
    .theme-toggle,
    .header-actions,
    footer {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .card-primary {
        border: 1px solid #000;
        box-shadow: none;
    }
}