/* ================================================================
   EDUCAFLIX — CSS Global
   Archivo: /assets/css/global.css
   Incluido en: todas las páginas (admin, docente, estudiante)
================================================================ */

/* ── RESET & BASE ───────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Inter', sans-serif; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── VARIABLES TEMA OSCURO (por defecto) ───────────────────── */
:root {
    --rojo:          #E50914;
    --rojo-hover:    #c20a10;
    --rojo-soft:     rgba(229, 9, 20, 0.12);
    --verde:         #50c878;
    --azul:          #4a90e2;
    --amarillo:      #f5a623;
    --naranja:       #f5a623;
    --morado:        #BD10E0;

    /* Fondos */
    --fondo:         #000000;
    --gris-oscuro:   #141414;
    --gris:          #1f1f1f;
    --gris-borde:    #2a2a2a;

    /* Texto */
    --blanco:        #e5e5e5;
    --blanco-puro:   #ffffff;
    --gris-texto:    #737373;

    /* Admin/Docente */
    --card-bg:       #1a1a1a;
    --sidebar-bg:    #0d0d0d;
    --borde:         #2a2a2a;
    --texto:         #e5e5e5;
    --suave:         #888888;

    /* Tamaños */
    --navbar-h:      68px;
    --radio:         8px;
    --trans:         0.2s ease;
    --sombra:        0 8px 32px rgba(0, 0, 0, 0.6);
}

/* ── TIPOGRAFÍA ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 { line-height: 1.2; }

/* ── SCROLLBAR PERSONALIZADO ───────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ── BADGES / ETIQUETAS ─────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 9px; border-radius: 10px;
    font-size: 0.68rem; font-weight: 700; letter-spacing: 0.3px; white-space: nowrap;
}
.badge-rojo     { background: rgba(229,9,20,0.12);   color: #ff6b6b; border: 1px solid rgba(229,9,20,0.25); }
.badge-verde    { background: rgba(80,200,120,0.12);  color: #50c878; border: 1px solid rgba(80,200,120,0.25); }
.badge-azul     { background: rgba(74,144,226,0.12);  color: #4a90e2; border: 1px solid rgba(74,144,226,0.25); }
.badge-amarillo { background: rgba(245,166,35,0.12);  color: #f5a623; border: 1px solid rgba(245,166,35,0.25); }
.badge-naranja  { background: rgba(245,166,35,0.12);  color: #f5a623; border: 1px solid rgba(245,166,35,0.25); }
.badge-gris     { background: rgba(255,255,255,0.06); color: #888;    border: 1px solid rgba(255,255,255,0.10); }
.badge-morado   { background: rgba(189,16,224,0.12);  color: #d463f0; border: 1px solid rgba(189,16,224,0.25); }

/* ── NIVEL BADGES ───────────────────────────────────────────── */
.nivel-badge { padding: 2px 7px; border-radius: 3px; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.4px; }
.nivel-badge.principiante { background: rgba(80,200,120,0.12); color: #50c878; }
.nivel-badge.intermedio   { background: rgba(245,166,35,0.12); color: #f5a623; }
.nivel-badge.avanzado     { background: rgba(229,9,20,0.12);   color: #ff6b6b; }

/* ── BOTONES GLOBALES ───────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 9px 18px; border-radius: 6px;
    font-size: 0.84rem; font-weight: 600; font-family: 'Inter', sans-serif;
    border: none; cursor: pointer; transition: all var(--trans);
    text-decoration: none; white-space: nowrap;
}
.btn-primary   { background: var(--rojo);  color: white; }
.btn-primary:hover  { background: var(--rojo-hover); transform: translateY(-1px); }
.btn-secondary { background: rgba(255,255,255,0.07); color: var(--texto); border: 1px solid var(--borde); }
.btn-secondary:hover { background: rgba(255,255,255,0.13); }
.btn-success   { background: rgba(80,200,120,0.12); color: var(--verde); border: 1px solid rgba(80,200,120,0.3); }
.btn-success:hover  { background: rgba(80,200,120,0.22); }
.btn-danger    { background: rgba(229,9,20,0.10); color: #ff6b6b; border: 1px solid rgba(229,9,20,0.3); }
.btn-danger:hover   { background: rgba(229,9,20,0.20); }
.btn-warning   { background: rgba(245,166,35,0.12); color: #f5a623; border: 1px solid rgba(245,166,35,0.3); }
.btn-warning:hover  { background: rgba(245,166,35,0.22); }
.btn-sm  { padding: 5px 13px; font-size: 0.76rem; }
.btn-xs  { padding: 3px 9px;  font-size: 0.70rem; border-radius: 4px; }
.btn-icon { padding: 7px; border-radius: 6px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ── FORMULARIOS ────────────────────────────────────────────── */
.form-group   { margin-bottom: 16px; }
.form-label   { display: block; font-size: 0.76rem; font-weight: 600; color: var(--texto); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.4px; }
.form-label .req { color: var(--rojo); margin-left: 3px; }
.form-control {
    width: 100%; padding: 9px 13px;
    background: var(--fondo); border: 1px solid var(--borde); border-radius: 6px;
    color: var(--blanco-puro); font-size: 0.88rem; font-family: 'Inter', sans-serif;
    outline: none; transition: border-color var(--trans), box-shadow var(--trans);
}
.form-control:focus { border-color: var(--rojo); box-shadow: 0 0 0 3px rgba(229,9,20,0.12); }
.form-control::placeholder { color: var(--suave); }
.form-control:disabled { opacity: 0.5; cursor: not-allowed; }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-hint  { font-size: 0.71rem; color: var(--suave); margin-top: 4px; line-height: 1.4; }
.form-error { font-size: 0.71rem; color: #ff6b6b; margin-top: 4px; display: flex; align-items: center; gap: 4px; }
.form-control.error { border-color: var(--rojo); }
.form-grid   { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

/* ── TOGGLE SWITCH ──────────────────────────────────────────── */
.toggle-wrap  { display: flex; align-items: center; gap: 10px; }
.toggle       { position: relative; width: 42px; height: 22px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--borde); border-radius: 22px; cursor: pointer; transition: 0.3s; }
.toggle-slider::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; bottom: 3px; background: white; border-radius: 50%; transition: 0.3s; }
.toggle input:checked + .toggle-slider { background: var(--rojo); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ── CARDS ──────────────────────────────────────────────────── */
.card { background: var(--card-bg); border: 1px solid var(--borde); border-radius: var(--radio); overflow: hidden; }
.card-header { padding: 14px 20px; border-bottom: 1px solid var(--borde); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-title  { font-size: 0.90rem; font-weight: 600; color: var(--blanco-puro); display: flex; align-items: center; gap: 8px; }
.card-body   { padding: 20px; }

/* ── KPI CARDS ──────────────────────────────────────────────── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: var(--card-bg); border: 1px solid var(--borde); border-radius: var(--radio); padding: 20px; position: relative; overflow: hidden; transition: transform var(--trans), border-color var(--trans); }
.kpi-card:hover { transform: translateY(-3px); border-color: rgba(255,255,255,0.15); }
.kpi-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.kpi-card.rojo::before     { background: var(--rojo); }
.kpi-card.azul::before     { background: var(--azul); }
.kpi-card.verde::before    { background: var(--verde); }
.kpi-card.amarillo::before { background: var(--amarillo); }
.kpi-card.naranja::before  { background: var(--naranja); }
.kpi-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }
.kpi-num  { font-size: 2.2rem; font-weight: 700; color: var(--blanco-puro); line-height: 1; margin-bottom: 6px; }
.kpi-label { font-size: 0.75rem; color: var(--suave); text-transform: uppercase; letter-spacing: 0.5px; }
.kpi-trend { font-size: 0.72rem; margin-top: 8px; display: flex; align-items: center; gap: 4px; }
.trend-up   { color: var(--verde); }
.trend-down { color: var(--rojo); }

/* ── TABLAS ─────────────────────────────────────────────────── */
.tabla-wrap { width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.84rem; }
thead th { padding: 10px 16px; text-align: left; font-size: 0.70rem; font-weight: 700; color: var(--suave); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--borde); white-space: nowrap; background: rgba(255,255,255,0.02); }
tbody td { padding: 11px 16px; border-bottom: 1px solid var(--borde); color: var(--texto); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(255,255,255,0.02); }

/* ── ALERTAS ────────────────────────────────────────────────── */
.alert { padding: 11px 15px; border-radius: 6px; font-size: 0.84rem; display: flex; align-items: flex-start; gap: 9px; margin-bottom: 18px; line-height: 1.5; }
.alert-exito   { background: rgba(80,200,120,0.10); border: 1px solid rgba(80,200,120,0.30); color: #50c878; }
.alert-error   { background: rgba(229,9,20,0.10);  border: 1px solid rgba(229,9,20,0.30);  color: #ff6b6b; }
.alert-warning { background: rgba(245,166,35,0.10); border: 1px solid rgba(245,166,35,0.30); color: #f5a623; }
.alert-info    { background: rgba(74,144,226,0.10); border: 1px solid rgba(74,144,226,0.30); color: #4a90e2; }

/* ── MODALES ────────────────────────────────────────────────── */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.80); z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; visibility: hidden; transition: all 0.25s; backdrop-filter: blur(4px); }
.modal-bg.open { opacity: 1; visibility: visible; }
.modal-box { background: #1a1a1a; border: 1px solid var(--borde); border-radius: var(--radio); width: 100%; max-width: 560px; max-height: 85vh; overflow-y: auto; transform: scale(0.93); transition: transform 0.25s; box-shadow: 0 30px 80px rgba(0,0,0,0.8); }
.modal-bg.open .modal-box { transform: scale(1); }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--borde); display: flex; align-items: center; justify-content: space-between; }
.modal-titulo { font-size: 0.95rem; font-weight: 700; color: var(--blanco-puro); }
.modal-close  { background: none; border: none; color: var(--suave); font-size: 1rem; cursor: pointer; transition: color var(--trans); }
.modal-close:hover { color: var(--blanco-puro); }
.modal-body   { padding: 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--borde); display: flex; gap: 10px; justify-content: flex-end; }

/* ── PROGRESO ───────────────────────────────────────────────── */
.prog-bar  { height: 5px; background: var(--borde); border-radius: 3px; overflow: hidden; }
.prog-fill { height: 100%; border-radius: 3px; transition: width 0.5s ease; }

/* ── USUARIO CELDA ──────────────────────────────────────────── */
.user-cell { display: flex; align-items: center; gap: 10px; }
.user-av   { width: 34px; height: 34px; border-radius: 6px; background: var(--rojo); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.78rem; flex-shrink: 0; overflow: hidden; color: white; }
.user-av img { width: 100%; height: 100%; object-fit: cover; }
.user-av-name  { font-weight: 600; font-size: 0.85rem; color: var(--blanco-puro); }
.user-av-email { font-size: 0.72rem; color: var(--suave); }

/* ── THUMB MINI ─────────────────────────────────────────────── */
.thumb-mini { width: 58px; height: 34px; border-radius: 4px; background: var(--fondo); overflow: hidden; flex-shrink: 0; }
.thumb-mini img { width: 100%; height: 100%; object-fit: cover; }

/* ── PAGE HEADER ────────────────────────────────────────────── */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; flex-wrap: wrap; gap: 12px; }
.page-header-titulo { font-family: 'Bebas Neue', sans-serif; font-size: 2rem; color: var(--blanco-puro); letter-spacing: 1px; }
.page-header-sub    { font-size: 0.82rem; color: var(--suave); margin-top: 2px; }

/* ── TOOLTIP ────────────────────────────────────────────────── */
[data-tip] { position: relative; }
[data-tip]::after { content: attr(data-tip); position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%); background: #333; color: white; font-size: 0.70rem; padding: 3px 9px; border-radius: 4px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 99; font-family: 'Inter', sans-serif; }
[data-tip]:hover::after { opacity: 1; }

/* ── TOAST NOTIFICATION ─────────────────────────────────────── */
.ef-toast { position: fixed; bottom: 24px; right: 24px; background: #222; border-radius: 8px; padding: 12px 20px; font-size: 0.85rem; font-family: 'Inter', sans-serif; z-index: 9999; box-shadow: 0 8px 24px rgba(0,0,0,0.6); animation: slideInRight 0.3s ease; max-width: 320px; border: 1px solid #444; }
@keyframes slideInRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ── RESPONSIVE HELPERS ─────────────────────────────────────── */
@media (max-width: 768px) {
    .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .tabla-wrap { font-size: 0.78rem; }
}

/* ── ANIMACIONES ────────────────────────────────────────────── */
@keyframes fadeIn     { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp    { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse      { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes spin       { to { transform: rotate(360deg); } }

.animate-fade   { animation: fadeIn 0.3s ease; }
.animate-up     { animation: slideUp 0.4s ease; }

/* ── EMPTY STATE ────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--suave); }
.empty-state h3 { font-size: 1.1rem; color: var(--blanco-puro); margin-bottom: 8px; }
.empty-state p  { font-size: 0.86rem; max-width: 360px; margin: 0 auto 20px; line-height: 1.6; }

/* ── UTILITY ────────────────────────────────────────────────── */
.text-rojo    { color: var(--rojo) !important; }
.text-verde   { color: var(--verde) !important; }
.text-amarillo{ color: var(--amarillo) !important; }
.text-azul    { color: var(--azul) !important; }
.text-suave   { color: var(--suave) !important; }
.text-blanco  { color: var(--blanco-puro) !important; }
.fw-bold      { font-weight: 700 !important; }
.fw-600       { font-weight: 600 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }