/**
 * THEME SYSTEM - Sistema de Temas para Latinbook
 * Versión: 1.0.0
 * Fecha: 16 de Marzo 2026
 * Modo Oscuro / Modo Claro
 */

/* ========================================
   VARIABLES DE TEMA - MODO OSCURO (DEFAULT)
   ======================================== */

:root {
    /* Colores primarios - Gradiente Latinbook */
    --primary-gradient: linear-gradient(135deg, #FF6B35, #FF3CAC, #784BA0);
    --primary-start: #FF6B35;
    --primary-mid: #FF3CAC;
    --primary-end: #784BA0;
    
    /* Colores de fondo - Modo Oscuro */
    --bg-primary: #0F1419;
    --bg-secondary: #1A1F3A;
    --bg-tertiary: #2A2F4A;
    --bg-hover: #3A3F5A;
    --bg-card: #1E2332;
    
    /* Colores de texto - Modo Oscuro */
    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --text-tertiary: #808080;
    --text-dim: #606060;
    
    /* Colores de borde */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    
    /* Colores de acento */
    --accent-cyan: #00D9FF;
    --accent-blue: #1DA1F2;
    --accent-purple: #784BA0;
    
    /* Colores semánticos */
    --success: #00E676;
    --warning: #FFB800;
    --danger: #FF3B30;
    --info: #00D9FF;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    
    /* Overlays */
    --overlay-dark: rgba(0, 0, 0, 0.7);
    --overlay-light: rgba(0, 0, 0, 0.3);
    
    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

/* ========================================
   MODO CLARO (LIGHT THEME)
   ======================================== */

[data-theme="light"] {
    /* Colores de fondo - Modo Claro */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7F9FA;
    --bg-tertiary: #EFF3F4;
    --bg-hover: #E7E9EA;
    --bg-card: #FFFFFF;
    
    /* Colores de texto - Modo Claro */
    --text-primary: #0F1419;
    --text-secondary: #536471;
    --text-tertiary: #8B98A5;
    --text-dim: #AAB8C2;
    
    /* Colores de borde - Modo Claro */
    --border-primary: rgba(0, 0, 0, 0.1);
    --border-secondary: rgba(0, 0, 0, 0.05);
    
    /* Sombras - Modo Claro */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.20);
    
    /* Overlays - Modo Claro */
    --overlay-dark: rgba(0, 0, 0, 0.4);
    --overlay-light: rgba(255, 255, 255, 0.8);
}

/* ========================================
   APLICACIÓN DE TEMAS
   ======================================== */

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-normal),
                color var(--transition-normal);
}

/* Cards y contenedores */
.post-card,
.story-item,
.user-card,
.modal-content,
.settings-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
}

/* Inputs y formularios */
input,
textarea,
select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-dim);
}

/* Botones secundarios */
.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* Navegación */
.mobile-nav,
.top-nav,
.desktop-sidebar {
    background: var(--bg-secondary);
    border-color: var(--border-primary);
}

/* Hover states */
.nav-btn:hover,
.action-btn:hover,
.settings-option:hover {
    background: var(--bg-hover);
}

/* Texto secundario */
.post-time,
.comment-time,
.stats-label {
    color: var(--text-secondary);
}

/* ========================================
   TOGGLE DE TEMA (SWITCH)
   ======================================== */

.theme-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.theme-toggle-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.theme-toggle-switch {
    position: relative;
    width: 56px;
    height: 28px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    border: 2px solid var(--border-primary);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.theme-toggle-switch::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Estado activo (modo claro) */
.theme-toggle input:checked + .theme-toggle-switch {
    background: var(--primary-gradient);
    border-color: var(--primary-mid);
}

.theme-toggle input:checked + .theme-toggle-switch::before {
    transform: translateX(28px);
}

/* Iconos del switch */
.theme-toggle-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    transition: opacity var(--transition-fast);
}

.theme-toggle-icon.moon {
    left: 6px;
    opacity: 1;
}

.theme-toggle-icon.sun {
    right: 6px;
    opacity: 0.3;
}

.theme-toggle input:checked ~ .theme-toggle-icon.moon {
    opacity: 0.3;
}

.theme-toggle input:checked ~ .theme-toggle-icon.sun {
    opacity: 1;
}

/* Ocultar checkbox */
.theme-toggle input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

/* ========================================
   ANIMACIÓN DE TRANSICIÓN DE TEMA
   ======================================== */

.theme-transition {
    transition: background-color var(--transition-normal),
                color var(--transition-normal),
                border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

/* Aplicar a elementos principales */
body,
.post-card,
.modal-content,
.mobile-nav,
.top-nav,
input,
textarea,
select,
button {
    transition: background-color var(--transition-normal),
                color var(--transition-normal),
                border-color var(--transition-normal);
}

/* ========================================
   PREFERENCIAS DEL SISTEMA
   ======================================== */

/* Respetar preferencias del usuario */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        /* Aplicar modo claro si el usuario lo prefiere */
        --bg-primary: #FFFFFF;
        --bg-secondary: #F7F9FA;
        --bg-tertiary: #EFF3F4;
        --bg-hover: #E7E9EA;
        --bg-card: #FFFFFF;
        
        --text-primary: #0F1419;
        --text-secondary: #536471;
        --text-tertiary: #8B98A5;
        --text-dim: #AAB8C2;
        
        --border-primary: rgba(0, 0, 0, 0.1);
        --border-secondary: rgba(0, 0, 0, 0.05);
        
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
        --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
        --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    }
}

/* ========================================
   MODO DE ALTO CONTRASTE
   ======================================== */

@media (prefers-contrast: high) {
    :root {
        --border-primary: rgba(255, 255, 255, 0.3);
        --text-secondary: #D0D0D0;
    }
    
    [data-theme="light"] {
        --border-primary: rgba(0, 0, 0, 0.3);
        --text-secondary: #404040;
    }
}

/* ========================================
   COMPONENTES ESPECÍFICOS CON TEMAS
   ======================================== */

/* Stories con tema */
.stories-container {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

/* AI Assistant con tema */
.ai-chat-floating {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
}

/* Latinmojis Picker con tema */
.latinmoji-picker {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
}

.latinmoji-search {
    background: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-primary);
}

.latinmoji-tab.active {
    background: var(--primary-gradient);
}

/* Comentarios con tema */
.comment-content {
    background: var(--bg-tertiary);
}

.comment-input-group {
    background: var(--bg-tertiary);
    border-color: var(--border-primary);
}

/* ========================================
   MEJORAS VISUALES PARA MODO CLARO
   ======================================== */

[data-theme="light"] .post-card,
[data-theme="light"] .modal-content {
    box-shadow: var(--shadow-md);
}

[data-theme="light"] .mobile-nav,
[data-theme="light"] .top-nav {
    border-top: 1px solid var(--border-primary);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] input:focus,
[data-theme="light"] textarea:focus {
    border-color: var(--primary-mid);
    box-shadow: 0 0 0 3px rgba(255, 60, 172, 0.1);
}

/* Botones primarios se mantienen igual en ambos modos */
.btn-primary,
.create-icon,
.comment-send-btn {
    background: var(--primary-gradient);
    color: white;
}

/* ========================================
   UTILIDADES DE TEMA
   ======================================== */

.theme-dark-only {
    display: block;
}

.theme-light-only {
    display: none;
}

[data-theme="light"] .theme-dark-only {
    display: none;
}

[data-theme="light"] .theme-light-only {
    display: block;
}

/* ========================================
   ANIMACIÓN DE CAMBIO DE TEMA
   ======================================== */

@keyframes themeSwitch {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
    100% {
        opacity: 1;
    }
}

.theme-switching {
    animation: themeSwitch 0.3s ease-in-out;
}

/* ========================================
   RESPONSIVE PARA TOGGLE DE TEMA
   ======================================== */

@media (max-width: 768px) {
    .theme-toggle-switch {
        width: 48px;
        height: 24px;
    }
    
    .theme-toggle-switch::before {
        width: 18px;
        height: 18px;
    }
    
    .theme-toggle input:checked + .theme-toggle-switch::before {
        transform: translateX(24px);
    }
}