/* CSS Reset and Base Styles */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    overflow-x: hidden;
    line-height: 1.6;
    min-height: 100vh;
}

/* Touch Optimization for Mobile */
body,
button,
a,
input,
select,
textarea {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* Fonts */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Outfit', sans-serif;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-background);
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%,
            hsla(var(--primary-hue), 85%, 45%, 0.15) 0%,
            transparent 50%),
        radial-gradient(circle at 80% 80%,
            hsla(var(--secondary-hue), 80%, 50%, 0.15) 0%,
            transparent 50%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Utility Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
}

/* ============================================
   LAYOUT - MAIN CONTENT
   
   REGLA DE IMPLEMENTACIÓN:
   1. Toda pantalla que utilice el menú lateral (sidebar) DEBE envolver 
      su contenido principal en una etiqueta <main class="main-content">.
   2. TODO CONTENIDO (secciones, tarjetas, tablas) dentro de .main-content 
      debe ocupar el 100% del ancho disponible (width: 100% o var(--container-width-full)).
      Esto garantiza una visualización consistente y profesional en PC y Tablets.
   ============================================ */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    width: var(--main-content-width);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    justify-items: stretch;
    align-content: start;
    gap: var(--grid-gap-standard);
}

/* ============================================
   DASHBOARD LAYOUT (Shared across authenticated pages)
   Migrated from dashboard.css - 2026-01-19
   ============================================ */

.dashboard-layout {
    display: flex;
    min-height: 100vh;
    background: var(--bg-dark);
}

.page-header {
    width: var(--container-width-full);
    max-width: var(--container-width-full);
    margin-bottom: var(--spacing-md);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.empty-icon,
.error-icon {
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
    display: flex;
    justify-content: center;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .main-content {
        padding: var(--spacing-md);
    }

    .page-title {
        font-size: 2rem;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .main-content {
        padding-top: 5rem;
        margin-left: 0;
        width: 100%;
    }

    .page-header {
        margin-bottom: var(--spacing-lg);
    }

    .page-title {
        font-size: 1.75rem;
    }

    .page-subtitle {
        font-size: 0.95rem;
    }
}

/* Responsive - Small Mobile */
@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-sm);
        padding-top: 4.5rem;
        margin-left: 0;
        width: 100%;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .page-subtitle {
        font-size: 0.9rem;
    }
}

/* ============================================
   ANIMACIONES DE VALIDACIÓN
   Reutilizables en cualquier pantalla
   ============================================ */

@keyframes shake-x {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-6px);
    }

    40% {
        transform: translateX(6px);
    }

    60% {
        transform: translateX(-4px);
    }

    80% {
        transform: translateX(4px);
    }
}

/* Pregunta con error */
.question-item.shake-error {
    animation: shake-x 0.4s ease;
    border-color: #f87171 !important;
}

/* Segmento vacío */
.segment-item.segment-error {
    border-color: #f87171 !important;
    background: rgba(239, 68, 68, 0.07) !important;
    animation: shake-x 0.4s ease;
}