/* =========================================================
   Diccionario Web — Estilos personalizados (sobre Bootstrap 5)
   ========================================================= */

:root,
[data-bs-theme="light"] {
    --app-bg: #f5f6fb;
    --app-surface: #ffffff;
    --app-surface-2: #f0f2f9;
    --app-border: rgba(15, 23, 42, .08);
    --app-text: #0f172a;
    --app-muted: #64748b;
    --app-primary: #4f46e5;
    --app-primary-2: #7c3aed;
    --app-accent: #06b6d4;
    --app-shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px -12px rgba(15, 23, 42, .12);
    --app-shadow-hover: 0 4px 8px rgba(15, 23, 42, .05), 0 24px 40px -16px rgba(79, 70, 229, .28);
    --nav-bg: rgba(255, 255, 255, .78);
    --hero-glow-1: rgba(99, 102, 241, .22);
    --hero-glow-2: rgba(6, 182, 212, .18);
    --bs-body-bg: var(--app-bg);
    --bs-body-color: var(--app-text);
    --bs-body-font-family: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

[data-bs-theme="dark"] {
    --app-bg: #0b1020;
    --app-surface: #121a2e;
    --app-surface-2: #182238;
    --app-border: rgba(148, 163, 184, .14);
    --app-text: #e2e8f0;
    --app-muted: #94a3b8;
    --app-primary: #818cf8;
    --app-primary-2: #a78bfa;
    --app-accent: #22d3ee;
    --app-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);
    --app-shadow-hover: 0 4px 8px rgba(0, 0, 0, .3), 0 24px 40px -16px rgba(129, 140, 248, .35);
    --nav-bg: rgba(11, 16, 32, .75);
    --hero-glow-1: rgba(99, 102, 241, .28);
    --hero-glow-2: rgba(34, 211, 238, .14);
    --bs-body-bg: var(--app-bg);
    --bs-body-color: var(--app-text);
}

body {
    background: var(--app-bg);
    color: var(--app-text);
    font-family: var(--bs-body-font-family);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

main { flex: 1; }

.mono,
.term-title { font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace; }

::selection { background: color-mix(in srgb, var(--app-primary) 30%, transparent); }

/* ---------- Navbar ---------- */
.app-navbar {
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--app-border);
    padding: .75rem 0;
}
.app-navbar .navbar-brand { color: var(--app-text); letter-spacing: -.02em; }
.brand-logo {
    width: 36px; height: 36px;
    display: inline-grid; place-items: center;
    border-radius: 10px;
    color: #fff;
    background: linear-gradient(135deg, var(--app-primary), var(--app-primary-2));
    box-shadow: 0 6px 16px -6px var(--app-primary);
}
.app-navbar .nav-link {
    color: var(--app-muted);
    font-weight: 600;
    border-radius: 10px;
    padding: .5rem .9rem !important;
    transition: color .2s, background .2s;
}
.app-navbar .nav-link:hover { color: var(--app-text); }
.app-navbar .nav-link.active {
    color: var(--app-primary);
    background: color-mix(in srgb, var(--app-primary) 12%, transparent);
}
.navbar-toggler { color: var(--app-text); }

.btn-theme {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    color: var(--app-text);
    display: grid; place-items: center;
    transition: transform .3s;
}
.btn-theme:hover { transform: rotate(20deg); color: var(--app-primary); }
[data-bs-theme="light"] .btn-theme .icon-light,
[data-bs-theme="dark"] .btn-theme .icon-dark { display: none; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: 5rem 0 3.5rem;
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(600px 300px at 20% 10%, var(--hero-glow-1), transparent 70%),
        radial-gradient(500px 280px at 85% 30%, var(--hero-glow-2), transparent 70%);
}
.hero-bg::after {
    content: "";
    position: absolute; inset: 0;
    background-image: radial-gradient(var(--app-border) 1px, transparent 1px);
    background-size: 22px 22px;
    mask-image: linear-gradient(to bottom, #000 20%, transparent 90%);
    -webkit-mask-image: linear-gradient(to bottom, #000 20%, transparent 90%);
}
.hero-chip {
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .35rem .9rem;
    border-radius: 999px;
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    color: var(--app-muted);
    font-size: .85rem; font-weight: 600;
    box-shadow: var(--app-shadow);
}
.hero-chip i { color: var(--app-primary); }
.hero-title {
    font-size: clamp(2.1rem, 5vw, 3.6rem);
    font-weight: 800;
    letter-spacing: -.035em;
    line-height: 1.1;
    margin: 1.25rem 0 1rem;
}
.text-gradient {
    background: linear-gradient(90deg, var(--app-primary), var(--app-primary-2) 50%, var(--app-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-lead { color: var(--app-muted); font-size: 1.1rem; max-width: 560px; margin: 0 auto 2rem; }

.search-box {
    position: relative;
    max-width: 620px;
}
.search-box > i {
    position: absolute; left: 1.25rem; top: 50%; transform: translateY(-50%);
    color: var(--app-muted); font-size: 1.1rem;
}
.search-box .form-control {
    height: 60px;
    padding-left: 3.2rem; padding-right: 3.5rem;
    border-radius: 16px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    font-size: 1.05rem;
    box-shadow: var(--app-shadow);
    transition: box-shadow .2s, border-color .2s;
}
.search-box .form-control:focus {
    border-color: var(--app-primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--app-primary) 18%, transparent), var(--app-shadow);
}
.search-box kbd {
    position: absolute; right: 1rem; top: 50%; transform: translateY(-50%);
    background: var(--app-surface-2); color: var(--app-muted);
    border: 1px solid var(--app-border);
    font-family: 'JetBrains Mono', monospace;
}

/* ---------- Filtros (chips) ---------- */
.filtros {
    display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem;
    margin-bottom: 2rem;
}
.chip {
    --cat: var(--app-primary);
    display: inline-flex; align-items: center; gap: .45rem;
    padding: .5rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    color: var(--app-text);
    font-weight: 600; font-size: .9rem;
    transition: all .2s;
}
.chip i { color: var(--cat); }
.chip:hover { border-color: var(--cat); transform: translateY(-1px); }
.chip.active {
    background: var(--cat);
    border-color: var(--cat);
    color: #fff;
    box-shadow: 0 8px 18px -8px var(--cat);
}
.chip.active i { color: #fff; }
.chip-count {
    font-size: .75rem;
    padding: .05rem .5rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--cat) 14%, transparent);
    color: var(--cat);
}
.chip.active .chip-count { background: rgba(255, 255, 255, .22); color: #fff; }

/* ---------- Tarjetas de término ---------- */
.term-card {
    --cat: var(--app-primary);
    position: relative;
    height: 100%;
    display: flex; flex-direction: column;
    padding: 1.5rem;
    border-radius: 18px;
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    box-shadow: var(--app-shadow);
    cursor: pointer;
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.term-card::before {
    content: "";
    position: absolute; left: 0; top: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--cat), transparent);
    opacity: .9;
}
.term-card:hover,
.term-card:focus-visible {
    transform: translateY(-6px);
    box-shadow: var(--app-shadow-hover);
    border-color: color-mix(in srgb, var(--cat) 40%, transparent);
    outline: none;
}
.term-card-static { cursor: default; }
.term-card-static:hover { transform: none; }

.term-icon {
    width: 44px; height: 44px;
    display: grid; place-items: center;
    border-radius: 12px;
    font-size: 1.2rem;
    color: var(--cat);
    background: color-mix(in srgb, var(--cat) 12%, transparent);
}
.term-icon-lg { width: 56px; height: 56px; font-size: 1.5rem; border-radius: 16px; }

.term-badge {
    --cat: var(--app-primary);
    display: inline-block;
    padding: .25rem .7rem;
    border-radius: 999px;
    font-size: .75rem; font-weight: 700;
    color: var(--cat);
    background: color-mix(in srgb, var(--cat) 12%, transparent);
    white-space: nowrap;
}
.term-title {
    font-size: 1.15rem; font-weight: 600;
    color: var(--app-text);
    margin-bottom: .5rem;
    word-break: break-word;
}
.term-desc {
    color: var(--app-muted);
    font-size: .95rem;
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.term-more {
    margin-top: 1rem;
    font-size: .85rem; font-weight: 700;
    color: var(--cat);
    opacity: 0; transform: translateX(-6px);
    transition: all .25s;
}
.term-card:hover .term-more,
.term-card:focus-visible .term-more { opacity: 1; transform: none; }

mark {
    padding: 0 .1em;
    border-radius: 4px;
    background: color-mix(in srgb, #facc15 45%, transparent);
    color: inherit;
}

/* Animación de entrada */
.term-item { animation: aparecer .45s ease both; }
.term-item.oculto { display: none; }
@keyframes aparecer {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: none; }
}

/* ---------- Modal ---------- */
.modal-content {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 20px;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .35);
}
.term-modal .term-title { font-size: 1.5rem; }
.modal-backdrop.show { opacity: .45; backdrop-filter: blur(4px); }

/* ---------- Botones ---------- */
.btn-primary-grad {
    color: #fff;
    border: 0;
    border-radius: 12px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--app-primary), var(--app-primary-2));
    box-shadow: 0 10px 22px -10px var(--app-primary);
    transition: transform .2s, box-shadow .2s, filter .2s;
}
.btn-primary-grad:hover,
.btn-primary-grad:focus { color: #fff; transform: translateY(-2px); filter: brightness(1.07); box-shadow: 0 14px 26px -10px var(--app-primary); }

.btn-soft {
    border-radius: 12px;
    font-weight: 600;
    color: var(--app-text);
    background: var(--app-surface-2);
    border: 1px solid var(--app-border);
}
.btn-soft:hover, .btn-soft.active { color: var(--app-primary); background: var(--app-surface-2); border-color: var(--app-primary); }

.btn-icon {
    width: 36px; height: 36px;
    display: inline-grid; place-items: center;
    border-radius: 10px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    padding: 0;
    transition: all .2s;
}
.btn-icon-edit { color: #d97706; }
.btn-icon-edit:hover { background: #f59e0b; border-color: #f59e0b; color: #fff; }
.btn-icon-delete { color: #dc2626; }
.btn-icon-delete:hover { background: #ef4444; border-color: #ef4444; color: #fff; }

.btn-top {
    position: fixed; right: 1.25rem; bottom: 1.25rem;
    width: 46px; height: 46px;
    border: 0; border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, var(--app-primary), var(--app-primary-2));
    box-shadow: 0 10px 22px -10px var(--app-primary);
    opacity: 0; pointer-events: none; transform: translateY(10px);
    transition: all .3s;
    z-index: 1040;
}
.btn-top.visible { opacity: 1; pointer-events: auto; transform: none; }

/* ---------- Panel admin ---------- */
.page-head { padding: 2.5rem 0 2rem; }
.page-kicker {
    font-size: .8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .08em;
    color: var(--app-primary);
}
.page-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; letter-spacing: -.03em; }
.back-link { color: var(--app-muted); text-decoration: none; font-weight: 600; font-size: .9rem; }
.back-link:hover { color: var(--app-primary); }

.panel {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: var(--app-shadow);
}
.panel-title { font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem; }
.panel-title i { color: var(--app-primary); margin-right: .35rem; }

.stat-card {
    --cat: var(--app-primary);
    display: flex; align-items: center; gap: 1rem;
    padding: 1.25rem;
    height: 100%;
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 18px;
    box-shadow: var(--app-shadow);
    min-width: 0;
}
.stat-card > div { min-width: 0; }
.stat-icon {
    flex-shrink: 0;
    width: 52px; height: 52px;
    display: grid; place-items: center;
    border-radius: 14px;
    font-size: 1.4rem;
    color: #fff;
    background: linear-gradient(135deg, var(--cat), color-mix(in srgb, var(--cat) 60%, #000));
    box-shadow: 0 10px 20px -10px var(--cat);
}
.stat-label { margin: 0; font-size: .8rem; font-weight: 600; color: var(--app-muted); }
.stat-value { margin: 0; font-size: 1.75rem; font-weight: 800; letter-spacing: -.02em; }
.stat-value-sm { font-size: 1.05rem; font-weight: 700; }

.dist-row { --cat: var(--app-primary); margin-bottom: 1.1rem; }
.dist-row i { color: var(--cat); }
.dist-bar {
    height: 8px; border-radius: 99px;
    background: var(--app-surface-2);
    overflow: hidden;
}
.dist-bar span {
    display: block; height: 100%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--cat), color-mix(in srgb, var(--cat) 55%, #fff));
    animation: crecer 1s ease both;
    transform-origin: left;
}
@keyframes crecer { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.input-icon { position: relative; }
.input-icon > i {
    position: absolute; left: .9rem; top: 50%; transform: translateY(-50%);
    color: var(--app-muted);
}
.input-icon .form-control { padding-left: 2.5rem; }

.form-control, .form-select {
    border-radius: 12px;
    border-color: var(--app-border);
    background-color: var(--app-surface);
}
.form-control:focus, .form-select:focus {
    border-color: var(--app-primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--app-primary) 16%, transparent);
}

.table-wrap { max-height: 620px; overflow-y: auto; border-radius: 12px; }
.app-table { --bs-table-bg: transparent; }
.app-table thead th {
    position: sticky; top: 0; z-index: 1;
    background: var(--app-surface-2);
    color: var(--app-muted);
    font-size: .75rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .06em;
    border-bottom: 1px solid var(--app-border);
}
.app-table td { border-color: var(--app-border); }
.text-clamp {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-width: 440px;
}

.danger-ring {
    width: 64px; height: 64px;
    margin: 0 auto;
    display: grid; place-items: center;
    border-radius: 50%;
    font-size: 1.6rem;
    color: #ef4444;
    background: rgba(239, 68, 68, .12);
    box-shadow: 0 0 0 8px rgba(239, 68, 68, .06);
}

/* Selector de categorías del formulario */
.cat-picker { display: flex; flex-wrap: wrap; gap: .5rem; }
.cat-option {
    --cat: var(--app-primary);
    display: inline-flex; align-items: center; gap: .4rem;
    padding: .55rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    font-weight: 600; font-size: .9rem;
    cursor: pointer;
    transition: all .2s;
}
.cat-option i { color: var(--cat); }
.cat-option:hover { border-color: var(--cat); }
.btn-check:checked + .cat-option {
    color: #fff;
    background: var(--cat);
    border-color: var(--cat);
    box-shadow: 0 8px 18px -8px var(--cat);
}
.btn-check:checked + .cat-option i { color: #fff; }
.btn-check:focus-visible + .cat-option { outline: 3px solid color-mix(in srgb, var(--cat) 40%, transparent); }

/* ---------- Estados vacíos / errores ---------- */
.empty-state {
    text-align: center;
    padding: 4rem 1rem;
}
.empty-state > i {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.empty-state h4 { font-weight: 800; margin-top: 1rem; }

.error-page {
    display: grid; place-items: center;
    min-height: 100vh; padding: 1rem;
}
.error-code {
    font-size: 6rem; font-weight: 800; line-height: 1;
    background: linear-gradient(135deg, var(--app-primary), var(--app-accent));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Toasts ---------- */
.app-toast {
    border: 1px solid var(--app-border);
    border-radius: 14px;
    background: var(--app-surface);
    color: var(--app-text);
    box-shadow: 0 20px 40px -18px rgba(0, 0, 0, .35);
    border-left: 4px solid var(--app-primary);
}
.toast-success { border-left-color: #10b981; } .toast-success > div > i { color: #10b981; }
.toast-danger  { border-left-color: #ef4444; } .toast-danger  > div > i { color: #ef4444; }
.toast-warning { border-left-color: #f59e0b; } .toast-warning > div > i { color: #f59e0b; }

/* ---------- Footer ---------- */
.app-footer {
    border-top: 1px solid var(--app-border);
    padding: 1.5rem 0;
    color: var(--app-muted);
    font-size: .9rem;
    background: var(--app-surface);
}

@media (max-width: 575.98px) {
    .hero { padding: 3.5rem 0 2.5rem; }
    .filtros { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; padding-bottom: .5rem; }
    .chip { flex-shrink: 0; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}