/* ============================================
   Grimorio de Cartas - Estilos
   Tema por defecto: light. Toggle con [data-theme="dark"].
   ============================================ */

/* --- Tema LIGHT (default) --- */
:root {
    --bg-deep: #f2e9d5;
    --bg-panel: #fbf6e9;
    --bg-card-front: linear-gradient(145deg, #fbf6e9 0%, #f0e5c9 50%, #fbf6e9 100%);
    --bg-card-back: linear-gradient(145deg, #fbf6e9 0%, #ede0bf 100%);
    --card-image-bg: linear-gradient(135deg, #ede0bf 0%, #f5ead0 100%);
    --gold: #a67c1f;
    --gold-bright: #c8952d;
    --gold-soft: rgba(166, 124, 31, 0.35);
    --text-main: #2a1a10;
    --text-muted: #7a6448;
    --accent-attack: #c73443;
    --accent-defense: #2565b8;
    --accent-magic: #8531d1;
    --accent-support: #2a8f4e;
    --border-subtle: rgba(166, 124, 31, 0.35);
    --border-strong: rgba(166, 124, 31, 0.5);
    --shadow-card: 0 8px 24px rgba(90, 60, 20, 0.15), 0 0 0 1px rgba(166, 124, 31, 0.2);
    --shadow-card-hover: 0 16px 40px rgba(90, 60, 20, 0.25), 0 0 24px rgba(200, 149, 45, 0.25), 0 0 0 1px rgba(166, 124, 31, 0.5);
    --bg-gradient-top: rgba(220, 180, 100, 0.25);
    --bg-gradient-bottom: rgba(200, 149, 45, 0.15);
    --glow-a: rgba(200, 149, 45, 0.08);
    --glow-b: rgba(255, 220, 150, 0.06);
    --filter-btn-bg: rgba(255, 250, 235, 0.7);
    --filter-btn-active-text: #fbf6e9;
    --footer-border: rgba(166, 124, 31, 0.2);
    --code-bg: rgba(166, 124, 31, 0.15);
    --radius-card: 16px;
    --font-title: 'Cinzel', 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* --- Tema DARK --- */
:root[data-theme="dark"] {
    --bg-deep: #07071a;
    --bg-panel: #10102a;
    --bg-card-front: linear-gradient(145deg, #1a1a3e 0%, #2a1a5e 50%, #1a1a3e 100%);
    --bg-card-back: linear-gradient(145deg, #12122e 0%, #1e1e4a 100%);
    --card-image-bg: linear-gradient(135deg, #0a0a20 0%, #1a1a3e 100%);
    --gold: #d4af37;
    --gold-bright: #f0d574;
    --gold-soft: rgba(212, 175, 55, 0.4);
    --text-main: #e8e8f0;
    --text-muted: #9a9ab8;
    --accent-attack: #ff5a6e;
    --accent-defense: #4ea3ff;
    --accent-magic: #b565ff;
    --accent-support: #4ade80;
    --border-subtle: rgba(212, 175, 55, 0.25);
    --border-strong: rgba(212, 175, 55, 0.4);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(212, 175, 55, 0.15);
    --shadow-card-hover: 0 20px 50px rgba(0, 0, 0, 0.75), 0 0 30px rgba(212, 175, 55, 0.3), 0 0 0 1px rgba(212, 175, 55, 0.4);
    --bg-gradient-top: rgba(50, 30, 100, 0.35);
    --bg-gradient-bottom: rgba(80, 40, 120, 0.25);
    --glow-a: rgba(180, 100, 255, 0.08);
    --glow-b: rgba(255, 180, 100, 0.06);
    --filter-btn-bg: rgba(30, 30, 60, 0.6);
    --filter-btn-active-text: var(--bg-deep);
    --footer-border: rgba(212, 175, 55, 0.1);
    --code-bg: rgba(212, 175, 55, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text-main);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at top, var(--bg-gradient-top) 0%, transparent 60%),
        radial-gradient(ellipse at bottom, var(--bg-gradient-bottom) 0%, transparent 60%);
    background-attachment: fixed;
    padding-bottom: env(safe-area-inset-bottom);
    transition: background-color 0.4s ease, color 0.4s ease;
}

.bg-glow {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(circle at 20% 30%, var(--glow-a) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, var(--glow-b) 0%, transparent 40%);
    animation: bgPulse 12s ease-in-out infinite alternate;
}

@keyframes bgPulse {
    0%   { opacity: 0.6; transform: scale(1); }
    100% { opacity: 1;   transform: scale(1.05); }
}

/* ============================================
   Theme toggle button
   ============================================ */
.theme-toggle {
    position: fixed;
    top: calc(1rem + env(safe-area-inset-top));
    right: calc(1rem + env(safe-area-inset-right));
    z-index: 100;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    background: var(--filter-btn-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--gold);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    line-height: 1;
    transition: transform 0.25s ease, background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.theme-toggle:hover {
    transform: scale(1.08) rotate(15deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2), 0 0 20px var(--gold-soft);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-icon {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.4s ease;
}

/* Light activo: mostrar luna (para pasar a dark) */
:root[data-theme="light"] .theme-icon-sun,
:root:not([data-theme="dark"]) .theme-icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}
:root[data-theme="light"] .theme-icon-moon,
:root:not([data-theme="dark"]) .theme-icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Dark activo: mostrar sol (para pasar a light) */
:root[data-theme="dark"] .theme-icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}
:root[data-theme="dark"] .theme-icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* ============================================
   Header
   ============================================ */
.site-header {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: clamp(2rem, 6vw, 4rem) 1.5rem 1.5rem;
}

.site-title {
    font-family: var(--font-title);
    font-weight: 900;
    font-size: clamp(1.8rem, 5.5vw, 3.5rem);
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, var(--gold-bright) 0%, var(--gold) 50%, #7a5a15 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px var(--gold-soft);
    line-height: 1.1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6em;
    flex-wrap: wrap;
}

:root[data-theme="dark"] .site-title {
    background: linear-gradient(135deg, var(--gold-bright) 0%, var(--gold) 50%, #a67c1f 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.title-accent {
    color: var(--gold);
    -webkit-text-fill-color: var(--gold);
    font-size: 0.7em;
    opacity: 0.8;
    animation: twinkle 3s ease-in-out infinite alternate;
}

@keyframes twinkle {
    0%   { opacity: 0.4; transform: rotate(0deg); }
    100% { opacity: 1;   transform: rotate(180deg); }
}

.site-subtitle {
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: clamp(0.9rem, 2.2vw, 1.1rem);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* ============================================
   Filtros
   ============================================ */
.filters {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1rem 1rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.filter-btn {
    background: var(--filter-btn-bg);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    padding: 0.55rem 1.2rem;
    border-radius: 999px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    letter-spacing: 0.02em;
}

.filter-btn:hover {
    color: var(--gold-bright);
    border-color: var(--gold-soft);
}

.filter-btn.active {
    color: var(--filter-btn-active-text);
    background: linear-gradient(135deg, var(--gold-bright), var(--gold));
    border-color: var(--gold);
    font-weight: 600;
    box-shadow: 0 4px 15px var(--gold-soft);
}

/* ============================================
   Grid de cartas
   ============================================ */
.cards-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: clamp(1rem, 2.5vw, 2rem);
    padding: 0 clamp(1rem, 4vw, 3rem) 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* ============================================
   Carta (flip 3D)
   ============================================ */
.card {
    aspect-ratio: 2 / 3;
    perspective: 1200px;
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
    font-family: inherit;
    color: inherit;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.card.hidden {
    display: none;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1), box-shadow 0.3s ease;
    transform-style: preserve-3d;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
}

.card:hover .card-inner {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.card.flipped .card-inner {
    transform: rotateY(180deg) translateY(-6px);
}

.card:focus-visible .card-inner {
    outline: 2px solid var(--gold-bright);
    outline-offset: 4px;
}

.card-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* --- Cara frontal --- */
.card-front {
    background: var(--bg-card-front);
    border: 1px solid var(--border-subtle);
    padding: 0.75rem;
}

.card-image-wrap {
    flex: 1;
    border-radius: 10px;
    background: var(--card-image-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-subtle);
    margin-bottom: 0.6rem;
}

.card-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card-image-wrap.placeholder {
    background:
        repeating-linear-gradient(45deg, var(--gold-soft) 0 1px, transparent 1px 20px),
        var(--card-image-bg);
    opacity: 1;
}

:root[data-theme="dark"] .card-image-wrap.placeholder {
    background:
        repeating-linear-gradient(45deg, rgba(212, 175, 55, 0.04) 0 10px, transparent 10px 20px),
        linear-gradient(135deg, #0f0f28 0%, #1e1e42 100%);
}

.placeholder-icon {
    font-size: 3rem;
    color: var(--gold);
    animation: float 4s ease-in-out infinite;
    filter: drop-shadow(0 2px 6px var(--gold-soft));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}

.card-name {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    color: var(--gold);
    text-align: center;
    padding: 0.25rem 0.5rem 0;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

:root[data-theme="dark"] .card-name,
:root[data-theme="dark"] .back-name,
:root[data-theme="dark"] .stat-value {
    color: var(--gold-bright);
}

.card-type-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    margin: 0.4rem auto 0.2rem;
    align-self: center;
}

.card-type-badge.ataque  { background: rgba(199, 52, 67, 0.12);   color: var(--accent-attack);  border: 1px solid rgba(199, 52, 67, 0.45); }
.card-type-badge.defensa { background: rgba(37, 101, 184, 0.12);  color: var(--accent-defense); border: 1px solid rgba(37, 101, 184, 0.45); }
.card-type-badge.magia   { background: rgba(133, 49, 209, 0.12);  color: var(--accent-magic);   border: 1px solid rgba(133, 49, 209, 0.45); }
.card-type-badge.apoyo   { background: rgba(42, 143, 78, 0.12);   color: var(--accent-support); border: 1px solid rgba(42, 143, 78, 0.45); }

:root[data-theme="dark"] .card-type-badge.ataque  { background: rgba(255, 90, 110, 0.15);  border-color: rgba(255, 90, 110, 0.4); }
:root[data-theme="dark"] .card-type-badge.defensa { background: rgba(78, 163, 255, 0.15);  border-color: rgba(78, 163, 255, 0.4); }
:root[data-theme="dark"] .card-type-badge.magia   { background: rgba(181, 101, 255, 0.15); border-color: rgba(181, 101, 255, 0.4); }
:root[data-theme="dark"] .card-type-badge.apoyo   { background: rgba(74, 222, 128, 0.15);  border-color: rgba(74, 222, 128, 0.4); }

.flip-hint {
    position: absolute;
    bottom: 0.6rem;
    right: 0.75rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0.7;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* --- Cara trasera --- */
.card-back {
    background: var(--bg-card-back);
    border: 1px solid var(--border-strong);
    transform: rotateY(180deg);
    padding: 1.25rem 1rem;
    justify-content: space-between;
}

.card-back::before {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1px solid var(--border-subtle);
    border-radius: calc(var(--radius-card) - 6px);
    pointer-events: none;
}

.back-header {
    text-align: center;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-subtle);
}

.back-name {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--gold);
    letter-spacing: 0.03em;
}

.back-type {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.back-description {
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-main);
    flex: 1;
    padding: 0.6rem 0;
    overflow-y: auto;
}

.back-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 0.6rem;
    border-top: 1px solid var(--border-subtle);
    gap: 0.5rem;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat-label {
    display: block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 0.15rem;
}

.stat-value {
    display: block;
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--gold);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem 1rem 2.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--footer-border);
}

.site-footer code {
    background: var(--code-bg);
    color: var(--gold);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85em;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 640px) {
    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1rem;
        padding: 0 1rem 3rem;
    }

    .card-name        { font-size: 0.85rem; }
    .card-type-badge  { font-size: 0.6rem; padding: 0.15rem 0.5rem; }
    .back-name        { font-size: 0.95rem; }
    .back-description { font-size: 0.78rem; }
    .stat-value       { font-size: 0.95rem; }
    .flip-hint        { font-size: 0.6rem; }
    .placeholder-icon { font-size: 2rem; }

    .filter-btn       { font-size: 0.8rem; padding: 0.45rem 0.9rem; }
    .theme-toggle     { width: 40px; height: 40px; font-size: 1.15rem; }
}

@media (max-width: 380px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    .card-back { padding: 0.75rem 0.6rem; }
}

@media (min-width: 1200px) {
    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .card-inner, .bg-glow, .title-accent, .placeholder-icon, .theme-toggle, .theme-icon {
        animation: none;
        transition: none;
    }
    .card.flipped .card-inner {
        transform: rotateY(180deg);
    }
}