/* ===================================
   VARIABLES CSS PARA TEMAS
   =================================== */
:root {
    /* Colores Modo Claro */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --overlay-color: rgba(0, 0, 0, 0.5);
    
    /* Tamaño de Fuente Base */
    --font-size-multiplier: 1;
}

/* Tema Oscuro */
body.dark-theme {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --card-bg: #2d2d2d;
    --card-shadow: rgba(0, 0, 0, 0.5);
    --overlay-color: rgba(0, 0, 0, 0.7);
}

/* Ajustes de tamaño de fuente */
body.font-small {
    --font-size-multiplier: 0.85;
}

body.font-large {
    --font-size-multiplier: 1.15;
}

/* ===================================
   ESTILOS CONTROLES EN BARRA
   =================================== */
.controls-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 16px;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.control-btn:active {
    transform: translateY(0);
}

.font-size-controls {
    display: flex;
    gap: 5px;
    padding: 5px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

/* ===================================
   HAMBURGER & SIDE MENU
   =================================== */
.hamburger-container { margin-left: 10px; }

/* Botón de menú (tres líneas) como icono sin cuadrado */
#menuToggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1101;
    /* icon-only (sin cuadro) */
    background: transparent;
    border: none;
    box-shadow: none;
    border-radius: 0;
}

#menuToggle:hover {
    background: transparent;
    transform: translateY(-50%); /* cancelar el levantamiento del hover base */
}

.menu-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-color);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 999;
}

.menu-overlay.open { opacity: 1; pointer-events: auto; }

.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 320px;
    max-width: 85vw;
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: -10px 0 30px rgba(0,0,0,0.2);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.side-menu.open { transform: translateX(0); }

.side-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.side-menu-header h3 { margin: 0; font-size: 1.1rem; }

.side-menu-close {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

.side-menu-links {
    padding: 12px 10px 10px 10px;
    overflow-y: auto;
    flex: 1;
}

.side-menu-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.25s ease, transform 0.15s ease;
}

.side-menu-links a:hover { background: rgba(255,255,255,0.06); transform: translateX(-2px); }

.side-menu-section { padding: 10px 14px; color: var(--text-secondary); font-weight: 600; font-size: 0.9rem; }

.side-menu-footer {
    padding: 14px 16px 20px 16px;
    border-top: 1px solid var(--border-color);
}

.side-menu-socials { display: flex; gap: 12px; }

.side-menu-socials a {
    width: 40px; height: 40px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 2px 8px var(--card-shadow);
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
}

.side-menu-socials a:hover { transform: translateY(-2px); background: var(--bg-primary); }

@media (max-width: 768px) {
    .nav-container { padding-right: 56px; }
    .side-menu { width: 280px; }
}

/* Reservar espacio en la barra para el botón absoluto */
.nav-container { padding-right: 64px; }

/* ===================================
   APLICACIÓN DE VARIABLES AL BODY
   =================================== */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===================================
   ESTILOS MODO OSCURO PARA ELEMENTOS
   =================================== */

/* Header/Barra Superior */
.dark-theme .top-bar {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-bottom: 1px solid var(--border-color);
}

/* Menú desplegable */
.dark-theme .contenido_menu {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.dark-theme .menu_item {
    color: var(--text-primary);
}

.dark-theme .menu_item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Tarjetas de características */
.dark-theme .feature-card {
    background-color: var(--card-bg);
    box-shadow: 0 4px 15px var(--card-shadow);
}

.dark-theme .feature-card .card-text h3 {
    color: var(--text-primary);
}

.dark-theme .feature-card .card-text p {
    color: var(--text-secondary);
}

/* Hero Section Overlay */
.dark-theme .hero-overlay {
    background: var(--overlay-color);
}
/* About Section */
.dark-theme .about-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.dark-theme .about-content h2 {
    color: var(--text-primary);
}

.dark-theme .about-content p {
    color: var(--text-secondary);
}
/* Footer */
.dark-theme .footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--text-primary);
}

/* WhatsApp Message */
.dark-theme .whatsapp-message {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

/* ===================================
   AJUSTES DE TAMAÑO DE FUENTE
   =================================== */
body {
    font-size: calc(16px * var(--font-size-multiplier));
}

h1 {
    font-size: calc(2.5rem * var(--font-size-multiplier));
}

h2 {
    font-size: calc(2rem * var(--font-size-multiplier));
}

h3 {
    font-size: calc(1.5rem * var(--font-size-multiplier));
}

p, span, a {
    font-size: calc(1rem * var(--font-size-multiplier));
}

.feature-card .card-text h3 {
    font-size: calc(1.5rem * var(--font-size-multiplier));
}

.feature-card .card-text p {
    font-size: calc(1rem * var(--font-size-multiplier));
}

/* ===================================
   TRANSICIONES SUAVES
   =================================== */
* {
    transition: background-color 0.3s ease, color 0.3s ease, font-size 0.3s ease;
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    .controls-container {
        gap: 5px;
    }
    
    .control-btn {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    .font-size-controls {
        gap: 3px;
        padding: 3px;
    }
}