/* =========================================================================
   VARIABLES CSS (Temas Claro y Oscuro)
   ========================================================================= */
:root {
    /* Tema Claro (Por defecto) */
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #475569;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --primary-color: #3b82f6;
    /* Azul principal */
    --primary-hover: #2563eb;
    --header-bg: #ffffff;
    --tag-bg: #eff6ff;
    --tag-text: #1d4ed8;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

/* Tema Oscuro */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --card-border: #334155;
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --header-bg: #1e293b;
    --tag-bg: #1e3a8a;
    --tag-text: #bfdbfe;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* =========================================================================
   RESET & BASE
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================================================
   HEADER & NAVBAR
   ========================================================================= */
.header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Lang Switch */
.lang-switch {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.lang-switch a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.lang-switch a:hover {
    color: var(--primary-color);
}

.lang-switch .active {
    color: var(--primary-color);
    font-weight: 700;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

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

[data-theme="dark"] .icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: none;
}

:root:not([data-theme]) .icon-sun {
    display: none;
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    text-align: center;
    padding: 60px 0 40px;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* =========================================================================
   CATEGORIES & GRID
   ========================================================================= */
.directory-category {
    margin-bottom: 50px;
}

.category-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* DIVIDER BETWEEN CATEGORIES */
.divider {
    border: 0;
    height: 1px;
    background-color: var(--card-border);
    margin: 40px auto;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* =========================================================================
   CARDS
   ========================================================================= */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.card-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    object-fit: contain;
    background-color: #ffffff;
    padding: 6px;
    border: 1px solid var(--card-border);
    margin-right: 16px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tag {
    background-color: var(--tag-bg);
    color: var(--tag-text);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 99px;
}

.btn-action {
    display: inline-block;
    width: 100%;
    text-align: center;
    background-color: var(--primary-color);
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: 10px;
    transition: var(--transition);
}

.btn-action:hover,
.btn-action:focus {
    background-color: var(--primary-hover);
    transform: scale(1.02);
}

.loading {
    text-align: center;
    width: 100%;
    padding: 40px;
    color: var(--text-muted);
    grid-column: 1 / -1;
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    background-color: var(--header-bg);
    border-top: 1px solid var(--card-border);
    padding: 30px 0;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer p {
    font-size: 0.9rem;
}

.disclaimer {
    font-size: 0.8rem !important;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* =========================================================================
   MEDIA QUERIES 
   ========================================================================= */
@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero {
        padding: 40px 0 20px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }
}/* Filtros y Categorías */
.filters-section {
    margin-bottom: 30px;
    text-align: center;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    padding: 10px 20px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    background-color: var(--tag-bg);
    border-color: var(--primary-color);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.category-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    min-height: 24px;
    /* Evita saltos de layout cuando cambia el texto */
    transition: opacity 0.3s ease;
}
/* =========================================================================
   ESPACIOS RESERVADOS PARA ANUNCIOS (ADS PLACEHOLDERS)
   ========================================================================= */
.ad-container {
    width: 100%;
    margin: 40px auto;
    text-align: center;
    border: 2px dashed var(--card-border);
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    /* Altura mínima estándar para banners */
    transition: var(--transition);
}

.ad-container:hover {
    border-color: var(--text-muted);
}

.ad-container span {
    font-weight: 600;
    margin-bottom: 5px;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.75rem;
}

/* Para ocultar los placeholders cuando insertes código real, o ajustarlos en móvil */
@media (max-width: 640px) {
    .ad-container {
        margin: 20px auto;
        min-height: 250px;
        /* En móvil los anuncios suelen ser 300x250 */
    }
}