/* ============================================
   ElectroLearn - Estilos Globales
   ============================================
   PASO 1: Estilos base del proyecto

   COMO FUNCIONAN LOS COLORES:
   Usamos "variables CSS" para definir colores una sola vez
   y reutilizarlos en todo el proyecto. Si quieres cambiar
   un color, solo lo cambias aqui arriba.
   ============================================ */

/* --- VARIABLES DE COLORES --- */
:root {
    /* Colores principales */
    --primary: #6C5CE7;          /* Violeta principal */
    --primary-light: #A29BFE;    /* Violeta claro */
    --secondary: #00CEC9;        /* Turquesa */
    --accent: #FD79A8;           /* Rosa */
    --accent2: #FDCB6E;          /* Amarillo */

    /* Colores de fondo */
    --dark: #0a0a1a;             /* Fondo principal (casi negro) */
    --dark2: #12122a;            /* Fondo secundario */
    --dark3: #1a1a3e;            /* Fondo de tarjetas */

    /* Colores de texto */
    --text: #E8E8F0;             /* Texto principal (blanco suave) */
    --text-muted: #9090B0;       /* Texto secundario (gris) */

    /* Colores de estado */
    --success: #00B894;          /* Verde exito */
    --danger: #FF6B6B;           /* Rojo error */
    --warning: #FDCB6E;          /* Amarillo advertencia */

    /* Efectos de vidrio (glassmorphism) */
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Bordes redondeados */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}


/* ============================================
   RESET - Quita estilos por defecto del navegador
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;   /* Evita scroll horizontal */
    line-height: 1.6;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--secondary);
}


/* ============================================
   FONDO ANIMADO
   Son 3 circulos borrosos que flotan lentamente
   ============================================ */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;           /* Detras de todo */
    overflow: hidden;
    pointer-events: none;  /* No interfiere con clicks */
}

.bg-animation .orb {
    position: absolute;
    border-radius: 50%;      /* Circulo */
    filter: blur(80px);      /* Muy borroso */
    opacity: 0.3;
    animation: floatOrb 20s infinite ease-in-out;
}

/* Orbe 1: Violeta arriba-izquierda */
.bg-animation .orb:nth-child(1) {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

/* Orbe 2: Turquesa centro-derecha */
.bg-animation .orb:nth-child(2) {
    width: 350px;
    height: 350px;
    background: var(--secondary);
    top: 50%;
    right: -100px;
    animation-delay: -7s;
}

/* Orbe 3: Rosa abajo-centro */
.bg-animation .orb:nth-child(3) {
    width: 300px;
    height: 300px;
    background: var(--accent);
    bottom: -100px;
    left: 30%;
    animation-delay: -14s;
}

/* Animacion: los orbes flotan suavemente */
@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25%      { transform: translate(50px, -80px) scale(1.1); }
    50%      { transform: translate(-30px, 50px) scale(0.9); }
    75%      { transform: translate(80px, 30px) scale(1.05); }
}


/* ============================================
   PANTALLA DE LOGIN
   ============================================ */
.login-container {
    position: relative;
    z-index: 1;           /* Encima del fondo */
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    background: var(--glass);
    backdrop-filter: blur(20px);           /* Efecto vidrio */
    -webkit-backdrop-filter: blur(20px);   /* Para Safari */
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 48px;
    width: 100%;
    max-width: 440px;
    animation: slideUp 0.6s ease;
}

/* Animacion: la tarjeta sube al aparecer */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 12px;
}

.login-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}


/* ============================================
   INPUTS (campos de texto)
   ============================================ */
.input-group {
    position: relative;
    margin-bottom: 16px;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    pointer-events: none;   /* El icono no interfiere con el click */
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 14px 16px 14px 46px;   /* Espacio a la izquierda para el icono */
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: all 0.3s;
}

.input-group select {
    cursor: pointer;
    appearance: none;   /* Quita la flecha por defecto */
}

.input-group select option {
    background: var(--dark2);
    color: var(--text);
}

/* Cuando el input esta enfocado (seleccionado) */
.input-group input:focus,
.input-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

/* Placeholder (texto gris dentro del input) */
.input-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}


/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

/* Boton principal (violeta) */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
}

/* Boton secundario (turquesa, con borde) */
.btn-secondary {
    background: rgba(0, 206, 201, 0.1);
    border: 1px solid rgba(0, 206, 201, 0.3);
    color: var(--secondary);
}

.btn-secondary:hover {
    background: rgba(0, 206, 201, 0.2);
}

/* Boton peligroso (rojo) */
.btn-danger {
    background: rgba(255, 107, 107, 0.15);
    border: 1px solid rgba(255, 107, 107, 0.3);
    color: var(--danger);
}

.btn-danger:hover {
    background: rgba(255, 107, 107, 0.25);
}

/* Ancho completo */
.btn-full {
    width: 100%;
}

/* Boton pequeno */
.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}


/* ============================================
   MENSAJES DE ERROR
   ============================================ */
.error-message {
    color: var(--danger);
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 12px;
    min-height: 20px;       /* Reserva espacio para evitar saltos */
    display: none;          /* Oculto por defecto */
}

.error-message.visible {
    display: block;
    animation: shake 0.4s ease;
}

/* Animacion: sacude el mensaje de error */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25%      { transform: translateX(-8px); }
    50%      { transform: translateX(8px); }
    75%      { transform: translateX(-4px); }
}


/* ============================================
   SEPARADOR (la linea con "o")
   ============================================ */
.divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

.divider span {
    padding: 0 16px;
}


/* ============================================
   FOOTER DEL LOGIN
   ============================================ */
.login-footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}


/* ============================================
   NAVBAR (barra de navegacion)
   Se usara desde el Paso 2
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 12px 24px;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand-icon {
    font-size: 1.6rem;
}

.nav-brand-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 4px;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: var(--glass);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}


/* ============================================
   TARJETAS (cards) - Uso general
   ============================================ */
.card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all 0.3s;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.1);
}

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

.card h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.card p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}


/* ============================================
   BADGES (etiquetas)
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: rgba(108, 92, 231, 0.15);
    color: var(--primary-light);
}

.badge-success {
    background: rgba(0, 184, 148, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(253, 203, 110, 0.15);
    color: var(--warning);
}

.badge-danger {
    background: rgba(255, 107, 107, 0.15);
    color: var(--danger);
}


/* ============================================
   GRID RESPONSIVE
   ============================================ */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}


/* ============================================
   UTILIDADES
   ============================================ */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.hidden { display: none !important; }

/* Animacion de aparecer */
.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}


/* ============================================
   RESPONSIVE - Ajustes para celulares
   ============================================ */
@media (max-width: 768px) {
    .login-card {
        padding: 32px 24px;
    }

    .login-logo {
        font-size: 1.6rem;
    }

    .navbar {
        padding: 10px 16px;
    }

    /* En celulares, esconder los links y mostrar menu hamburguesa */
    .nav-links {
        display: none;
    }

    .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 26, 0.95);
        backdrop-filter: blur(20px);
        padding: 16px;
        border-bottom: 1px solid var(--glass-border);
    }

    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   ╔══════════════════════════════════════════════════════════╗
   ║  PREMIUM LAYER · v2 — añadidos para venta de membresías  ║
   ╚══════════════════════════════════════════════════════════╝
   - Design tokens unificados (escala tipográfica, sombras, easings)
   - Skeleton loaders + estados (loading/empty/error)
   - Sistema de toasts y confirmaciones premium
   - Tarjetas glass+gradient con tilt/shine
   - Hero patterns y mesh gradients animados
   - Sidebar premium con indicador pill animado
   - Chips, pills y filtros sticky
   - Botones con shimmer y micro-interacciones
   - Mobile drawer con hamburguesa
   - Accesibilidad: focus-visible, scrollbar custom, motion-reduce
   ============================================================ */

:root {
    /* —— Escala tipográfica modular —— */
    --fs-2xs: .68rem;
    --fs-xs:  .75rem;
    --fs-sm:  .85rem;
    --fs-md:  .95rem;
    --fs-lg:  1.1rem;
    --fs-xl:  1.4rem;
    --fs-2xl: 1.85rem;
    --fs-3xl: 2.4rem;
    --fs-4xl: 3.2rem;

    /* —— Sombras y profundidad —— */
    --shadow-sm: 0 2px 8px rgba(0,0,0,.18);
    --shadow-md: 0 8px 28px rgba(0,0,0,.28);
    --shadow-lg: 0 18px 60px rgba(0,0,0,.45);
    --shadow-glow: 0 0 0 1px rgba(124,58,237,.35), 0 12px 40px rgba(124,58,237,.32);

    /* —— Easings —— */
    --ease-out: cubic-bezier(.16,1,.3,1);
    --ease-spring: cubic-bezier(.34,1.56,.64,1);

    /* —— Gradientes de marca —— */
    --grad-primary: linear-gradient(135deg, #7c3aed 0%, #a78bfa 60%, #00cec9 100%);
    --grad-warm:    linear-gradient(135deg, #ec4899 0%, #fdcb6e 100%);
    --grad-success: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
    --grad-mesh:
        radial-gradient(ellipse 80% 50% at 20% -10%, rgba(124,58,237,.22) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 110%, rgba(13,148,136,.18) 0%, transparent 55%),
        radial-gradient(ellipse 50% 60% at 50% 50%, rgba(236,72,153,.10) 0%, transparent 70%);

    /* —— Glass premium —— */
    --glass-2: rgba(255,255,255,.045);
    --glass-3: rgba(255,255,255,.07);
    --border-soft: rgba(255,255,255,.08);
    --border-mid:  rgba(255,255,255,.14);
}

/* —— Selección y scrollbar custom —— */
::selection { background: rgba(124,58,237,.45); color:#fff; }
* { scrollbar-width: thin; scrollbar-color: rgba(124,58,237,.4) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(124,58,237,.55), rgba(0,206,201,.45));
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, rgba(124,58,237,.85), rgba(0,206,201,.7)); background-clip: padding-box; border:2px solid transparent; }

/* —— Focus visible accesible para todo —— */
:where(button, a, input, select, textarea, [role="button"], [tabindex]):focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* —— Reduce motion —— */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ════════════════════════════════════════
   SKELETON LOADERS
   ════════════════════════════════════════ */
.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,.04) 25%, rgba(255,255,255,.10) 50%, rgba(255,255,255,.04) 75%);
    background-size: 200% 100%;
    animation: skel 1.4s ease-in-out infinite;
    border-radius: var(--radius-md);
    color: transparent !important;
    pointer-events: none;
    user-select: none;
}
.skeleton-line { height: 14px; margin: 6px 0; }
.skeleton-line.lg { height: 22px; }
.skeleton-line.sm { height: 10px; }
.skeleton-card { height: 120px; }
.skeleton-circle { border-radius: 50%; }
@keyframes skel { 0%{background-position: 200% 0;} 100%{background-position: -200% 0;} }

/* ════════════════════════════════════════
   ESTADOS: empty / error / loading
   ════════════════════════════════════════ */
.state {
    text-align: center;
    padding: 48px 24px;
    border-radius: var(--radius-lg);
    background: var(--glass-2);
    border: 1px dashed var(--border-soft);
}
.state-icon {
    width: 64px; height: 64px;
    margin: 0 auto 14px;
    display: grid; place-items: center;
    background: var(--grad-primary);
    border-radius: 18px;
    font-size: 1.8rem;
    box-shadow: var(--shadow-glow);
    animation: floaty 3.6s ease-in-out infinite;
}
.state h4 { font-size: var(--fs-lg); margin-bottom: 6px; }
.state p { color: var(--text-muted); font-size: var(--fs-sm); max-width: 420px; margin: 0 auto 14px; }
@keyframes floaty { 0%,100%{transform: translateY(0);} 50%{transform: translateY(-6px);} }

/* ════════════════════════════════════════
   TARJETAS PREMIUM (glass + tilt + shine)
   ════════════════════════════════════════ */
.card-pro {
    position: relative;
    background:
        linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)),
        rgba(15, 22, 35, .55);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: 22px;
    transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), border-color .35s var(--ease-out);
    overflow: hidden;
    isolation: isolate;
}
.card-pro::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(600px circle at var(--mx,50%) var(--my,0%), rgba(167,139,250,.16), transparent 40%);
    opacity: 0; transition: opacity .35s; pointer-events: none; z-index: -1;
}
.card-pro:hover { transform: translateY(-4px); border-color: var(--border-mid); box-shadow: var(--shadow-md); }
.card-pro:hover::before { opacity: 1; }
.card-pro.is-accent { border-color: rgba(124,58,237,.35); box-shadow: 0 0 0 1px rgba(124,58,237,.25), var(--shadow-md); }

/* —— Stat card premium —— */
.stat-pro {
    position: relative;
    padding: 20px 22px;
    background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .35s var(--ease-out), box-shadow .35s;
}
.stat-pro:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-pro .stat-ico {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: grid; place-items: center;
    font-size: 1.15rem; margin-bottom: 12px;
    background: var(--grad-primary);
    box-shadow: 0 6px 18px rgba(124,58,237,.32);
}
.stat-pro .stat-num {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    font-size: var(--fs-2xl);
    line-height: 1;
    background: linear-gradient(135deg, #fff, #c4b5fd);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-pro .stat-lbl { color: var(--text-muted); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em; margin-top: 4px; }
.stat-pro .stat-trend { display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); margin-top: 8px; padding: 2px 8px; border-radius: 999px; }
.stat-pro .stat-trend.up   { color: #6ee7b7; background: rgba(16,185,129,.12); }
.stat-pro .stat-trend.down { color: #fca5a5; background: rgba(255,107,107,.12); }

.stat-pro::after {
    content: '';
    position: absolute; right: -30px; bottom: -30px;
    width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(124,58,237,.18), transparent 70%);
    border-radius: 50%;
    transition: transform .5s var(--ease-out);
}
.stat-pro:hover::after { transform: scale(1.4); }

/* Variantes coloreadas para stats */
.stat-pro.s-teal  .stat-ico { background: linear-gradient(135deg,#0d9488,#22d3ee); box-shadow: 0 6px 18px rgba(13,148,136,.35); }
.stat-pro.s-pink  .stat-ico { background: linear-gradient(135deg,#ec4899,#f472b6); box-shadow: 0 6px 18px rgba(236,72,153,.35); }
.stat-pro.s-amber .stat-ico { background: linear-gradient(135deg,#f59e0b,#fcd34d); box-shadow: 0 6px 18px rgba(245,158,11,.35); }
.stat-pro.s-green .stat-ico { background: linear-gradient(135deg,#10b981,#34d399); box-shadow: 0 6px 18px rgba(16,185,129,.35); }

/* ════════════════════════════════════════
   HERO con mesh gradient
   ════════════════════════════════════════ */
.hero-pro {
    position: relative;
    border-radius: var(--radius-xl);
    padding: 32px 32px;
    background:
        var(--grad-mesh),
        linear-gradient(180deg, rgba(15,22,35,.7), rgba(10,10,26,.55));
    border: 1px solid var(--border-soft);
    overflow: hidden;
    isolation: isolate;
}
.hero-pro::before{
    content:'';
    position:absolute; inset:0; z-index:-1;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 36px 36px;
    mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, black 30%, transparent 90%);
}
.hero-pro h1, .hero-pro .hero-title {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(1.6rem, 3vw, var(--fs-3xl));
    line-height: 1.15;
    letter-spacing: -.02em;
}
.hero-pro .hero-grad {
    background: linear-gradient(135deg, #fff 0%, #c4b5fd 50%, #5eead4 100%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-pro .hero-sub { color: var(--text-muted); margin-top: 6px; font-size: var(--fs-md); max-width: 640px; }

/* ════════════════════════════════════════
   CHIPS / PILLS / FILTROS
   ════════════════════════════════════════ */
.chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 12px;
    background: var(--glass-3);
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    font-size: var(--fs-xs);
    color: var(--text);
    cursor: pointer;
    transition: all .25s;
    user-select: none;
}
.chip:hover { background: rgba(124,58,237,.12); border-color: rgba(124,58,237,.4); }
.chip.is-active {
    background: rgba(124,58,237,.18);
    border-color: rgba(124,58,237,.55);
    color: #fff;
    box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}
.chip .chip-x { opacity: .6; margin-left: 4px; }
.chip:hover .chip-x { opacity: 1; }

.filter-bar {
    position: sticky; top: 70px; z-index: 5;
    display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
    padding: 10px 14px;
    background: rgba(10,10,26,.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
}

/* ════════════════════════════════════════
   BOTONES PREMIUM
   ════════════════════════════════════════ */
.btn-pro {
    position: relative;
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 22px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    background: var(--glass-2);
    color: var(--text);
    font-weight: 600;
    font-size: var(--fs-sm);
    cursor: pointer;
    transition: all .25s var(--ease-out);
    overflow: hidden;
    text-decoration: none;
}
.btn-pro:hover { transform: translateY(-1px); border-color: var(--border-mid); background: var(--glass-3); }
.btn-pro.primary {
    background: var(--grad-primary);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 22px rgba(124,58,237,.35);
}
.btn-pro.primary::after {
    content:''; position:absolute; inset:0;
    background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,.4) 50%, transparent 65%);
    transform: translateX(-100%);
    transition: transform .8s;
}
.btn-pro.primary:hover::after { transform: translateX(100%); }
.btn-pro.primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(124,58,237,.5); }
.btn-pro.ghost { background: transparent; }
.btn-pro.warm { background: var(--grad-warm); border-color: transparent; color:#fff; box-shadow: 0 8px 22px rgba(236,72,153,.35); }
.btn-pro.success { background: var(--grad-success); border-color: transparent; color:#fff; box-shadow: 0 8px 22px rgba(0,184,148,.35); }
.btn-pro:disabled { opacity:.5; cursor: not-allowed; transform: none !important; }

/* ════════════════════════════════════════
   TOASTS + MODAL CONFIRMACIÓN PREMIUM
   ════════════════════════════════════════ */
.toast-host {
    position: fixed; top: 80px; right: 16px; z-index: 10000;
    display: flex; flex-direction: column; gap: 10px;
    pointer-events: none;
}
.toast {
    pointer-events: auto;
    min-width: 260px; max-width: 360px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: rgba(15,22,35,.95);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border-soft);
    color: var(--text);
    font-size: var(--fs-sm);
    box-shadow: var(--shadow-md);
    display: flex; align-items: center; gap: 10px;
    animation: toastIn .35s var(--ease-spring);
}
.toast.out { animation: toastOut .25s ease forwards; }
.toast .toast-ico { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; flex-shrink: 0; }
.toast.success .toast-ico { background: rgba(16,185,129,.18); color:#34d399; }
.toast.error   .toast-ico { background: rgba(255,107,107,.18); color:#fca5a5; }
.toast.info    .toast-ico { background: rgba(124,58,237,.18); color:#c4b5fd; }
.toast.warn    .toast-ico { background: rgba(245,158,11,.18); color:#fcd34d; }
@keyframes toastIn  { from{opacity:0; transform: translateX(40px) scale(.95);} to{opacity:1; transform:none;} }
@keyframes toastOut { to { opacity:0; transform: translateX(40px) scale(.95);} }

.modal-pro-backdrop {
    position: fixed; inset: 0; z-index: 9000;
    background: rgba(5,8,15,.65);
    backdrop-filter: blur(8px);
    display: grid; place-items: center;
    padding: 24px;
    animation: fadeIn .25s ease;
}
.modal-pro {
    width: 100%; max-width: 460px;
    background: linear-gradient(180deg, rgba(20,24,40,.95), rgba(10,10,26,.95));
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-lg);
    animation: slideUp .3s var(--ease-spring);
}
.modal-pro h3 { font-size: var(--fs-xl); margin-bottom: 8px; }
.modal-pro p  { color: var(--text-muted); font-size: var(--fs-sm); margin-bottom: 20px; }
.modal-pro .modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ════════════════════════════════════════
   SIDEBAR PREMIUM (panel docente)
   ════════════════════════════════════════ */
.side-pro {
    position: fixed; top: 0; left: 0;
    width: 260px; height: 100vh;
    background: linear-gradient(180deg, rgba(15,22,35,.95), rgba(10,10,26,.95));
    border-right: 1px solid var(--border-soft);
    backdrop-filter: blur(18px);
    padding: 18px 14px;
    display: flex; flex-direction: column;
    z-index: 80;
    transition: transform .3s var(--ease-out);
}
.side-pro .side-brand { display:flex; align-items:center; gap:10px; padding:8px 10px 18px; }
.side-pro .side-brand .b-ico { width:38px; height:38px; border-radius:11px; background: var(--grad-primary); display:grid; place-items:center; box-shadow: 0 8px 20px rgba(124,58,237,.4); }
.side-pro .side-brand .b-txt { font-family:'Space Grotesk', sans-serif; font-weight:800; background: linear-gradient(135deg,#fff,#a78bfa); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-size: 1.05rem; }
.side-pro .side-section-label { font-size: var(--fs-2xs); text-transform: uppercase; letter-spacing: .12em; color: var(--text-muted); padding: 14px 10px 6px; }
.side-pro nav { display: flex; flex-direction: column; gap: 2px; }
.side-pro .side-item {
    position: relative;
    display: flex; align-items: center; gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: var(--fs-sm);
    cursor: pointer;
    transition: color .2s, background .2s;
    text-decoration: none;
}
.side-pro .side-item .si-ico { width:22px; text-align:center; font-size: 1rem; }
.side-pro .side-item:hover { color: var(--text); background: var(--glass-2); }
.side-pro .side-item.active { color:#fff; background: linear-gradient(90deg, rgba(124,58,237,.22), rgba(124,58,237,.06)); }
.side-pro .side-item.active::before {
    content:''; position:absolute; left:0; top:8px; bottom:8px;
    width: 3px; border-radius: 4px;
    background: linear-gradient(180deg,#a78bfa,#22d3ee);
    box-shadow: 0 0 8px rgba(167,139,250,.7);
}
.side-pro .side-foot { margin-top: auto; padding: 10px; font-size: var(--fs-2xs); color: var(--text-muted); border-top: 1px solid var(--border-soft); }

/* Hamburguesa */
.btn-hamb {
    display: none;
    position: fixed; top: 14px; left: 14px; z-index: 95;
    width: 42px; height: 42px;
    border-radius: 12px;
    background: rgba(15,22,35,.85);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-soft);
    color: var(--text);
    font-size: 1.2rem;
    cursor: pointer;
}

@media (max-width: 980px) {
    .btn-hamb { display: grid; place-items: center; }
    .side-pro { transform: translateX(-110%); box-shadow: var(--shadow-lg); }
    .side-pro.is-open { transform: translateX(0); }
}

/* ════════════════════════════════════════
   STEPPER (wizard horizontal)
   ════════════════════════════════════════ */
.stepper {
    display:flex; align-items:center; justify-content:space-between; gap: 8px;
    padding: 14px 18px;
    background: var(--glass-2);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
}
.stepper .step { display:flex; align-items:center; gap: 10px; flex: 1; }
.stepper .step-num {
    width: 30px; height: 30px; border-radius: 50%;
    display:grid; place-items:center;
    font-weight: 700; font-size: .85rem;
    background: rgba(255,255,255,.06); color: var(--text-muted);
    border: 1px solid var(--border-soft);
    transition: all .3s;
}
.stepper .step.is-done .step-num,
.stepper .step.is-active .step-num {
    background: var(--grad-primary); color: #fff; border-color: transparent;
    box-shadow: 0 6px 18px rgba(124,58,237,.4);
}
.stepper .step-lbl { font-size: var(--fs-xs); color: var(--text-muted); }
.stepper .step.is-active .step-lbl { color: #fff; }
.stepper .step-line { flex: 1; height: 2px; background: rgba(255,255,255,.06); border-radius: 2px; }
.stepper .step.is-done + .step-line, .stepper .step.is-active + .step-line { background: linear-gradient(90deg,#a78bfa,#22d3ee); }

/* ════════════════════════════════════════
   COUNT-UP / pulse / shimmer reusables
   ════════════════════════════════════════ */
.shine-text {
    background: linear-gradient(90deg, #fff 0%, #c4b5fd 25%, #fff 50%, #5eead4 75%, #fff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    animation: shineMove 4s linear infinite;
}
@keyframes shineMove { 0%{background-position: 0% 50%;} 100%{background-position: 200% 50%;} }
.pulse-ring {
    position: relative;
}
.pulse-ring::after {
    content:''; position:absolute; inset:-4px;
    border-radius: inherit;
    border: 2px solid rgba(124,58,237,.6);
    animation: pulseRing 1.6s ease-out infinite;
}
@keyframes pulseRing { 0%{opacity:.7; transform: scale(1);} 100%{opacity:0; transform: scale(1.3);} }

/* —— Confetti container (lo dispara JS pero el host vive aquí) —— */
.confetti-host { position: fixed; inset: 0; pointer-events: none; z-index: 9999; overflow: hidden; }
.confetti-piece {
    position: absolute; top: -10px; width: 10px; height: 14px; border-radius: 2px;
    will-change: transform, opacity;
    animation: confFall linear forwards;
}
@keyframes confFall {
    0%   { transform: translate3d(0, -20px, 0) rotate(0); opacity: 1; }
    100% { transform: translate3d(var(--dx,40px), 110vh, 0) rotate(720deg); opacity: 0; }
}

/* ════════════════════════════════════════
   TIMER CIRCULAR (evaluaciones)
   ════════════════════════════════════════ */
.timer-ring { transform: rotate(-90deg); }
.timer-ring .track { stroke: rgba(255,255,255,.08); }
.timer-ring .fill  { stroke: url(#tg); transition: stroke-dashoffset 1s linear, stroke .5s; }
.timer-ring.danger .fill { stroke: #ff6b6b; animation: timerPulse 1s ease-in-out infinite; }
@keyframes timerPulse { 0%,100%{filter: drop-shadow(0 0 0 #ff6b6b);} 50%{filter: drop-shadow(0 0 6px #ff6b6b);} }

/* ════════════════════════════════════════
   PRICING / BADGE PREMIUM (para venta)
   ════════════════════════════════════════ */
.badge-pro { display:inline-flex; gap:6px; align-items:center; padding: 4px 10px; border-radius: 999px; font-size: var(--fs-2xs); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.badge-pro.gold {
    background: linear-gradient(135deg, rgba(252,211,77,.18), rgba(245,158,11,.18));
    color: #fcd34d;
    border: 1px solid rgba(252,211,77,.35);
}
.badge-pro.new { background: linear-gradient(135deg, rgba(34,211,238,.18), rgba(13,148,136,.18)); color:#5eead4; border:1px solid rgba(34,211,238,.35); }

/* ════════════════════════════════════════
   UTILS extra
   ════════════════════════════════════════ */
.glass-soft { background: var(--glass-2); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); }
.no-scroll  { overflow: hidden; }
.flex { display:flex; }
.between { display:flex; justify-content:space-between; align-items:center; gap: 12px; }
.gap-1 { gap: 8px; } .gap-2 { gap: 12px; } .gap-3 { gap: 16px; }
.center { display:flex; align-items:center; justify-content:center; }
.muted { color: var(--text-muted); }
.tilt { transition: transform .35s var(--ease-out); }
.tilt:hover { transform: perspective(900px) rotateX(2deg) rotateY(-2deg) translateY(-3px); }

/* ════════════════════════════════════════
   ENLACES INVÁLIDOS DEL SIDEBAR (a sin href)
   ════════════════════════════════════════ */
[role="button"], a[onclick]:not([href]) { cursor: pointer; }