@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg-app);
    color: var(--texto);
    font-size: 14px;
    line-height: 1.5;
}

a { color: inherit; }

/* ===== Shell: sidebar + topbar + contenido ===== */
.app-shell {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
    transition: grid-template-columns 0.18s ease;
}

.app-shell.colapsado {
    grid-template-columns: 72px 1fr;
}

.sidebar {
    background: var(--sidebar-bg);
    color: #cdd4ea;
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: hidden;
}

.sidebar-marca {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px 26px;
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    white-space: nowrap;
}

.sidebar-marca .punto {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}

.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 2px; }

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 7px;
    text-decoration: none;
    color: #aab2cc;
    font-size: 13.5px;
    font-weight: 500;
    white-space: nowrap;
    transition: background 0.12s ease, color 0.12s ease;
}

.sidebar-nav a svg { flex-shrink: 0; width: 18px; height: 18px; }

.sidebar-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }

.sidebar-nav a.activo {
    background: var(--primary);
    color: #fff;
}

.sidebar-pie {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 12px;
    margin-top: 12px;
}

.app-shell.colapsado .sidebar-marca span,
.app-shell.colapsado .sidebar-nav a span,
.app-shell.colapsado .sidebar-pie a span {
    display: none;
}

.app-shell.colapsado .sidebar-marca { justify-content: center; }
.app-shell.colapsado .sidebar-nav a { justify-content: center; }

/* Topbar */
.contenido { display: flex; flex-direction: column; min-width: 0; }

.topbar {
    background: #fff;
    border-bottom: 1px solid var(--borde);
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 5;
}

.topbar-izq { display: flex; align-items: center; gap: 14px; }

#toggle-sidebar {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--texto);
    padding: 6px;
    border-radius: 6px;
    display: flex;
    width: auto;
    margin: 0;
}

#toggle-sidebar:hover { background: var(--bg-app); }

.topbar-titulo .eyebrow { margin-bottom: 2px; }
.topbar-titulo h1 { font-size: 17px; font-weight: 600; color: var(--texto-fuerte); }

.topbar-usuario {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--texto-suave);
}

.avatar-inicial {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
}

main.contenido-principal {
    padding: 26px 28px 40px;
    flex: 1;
}

/* ===== Componentes ===== */
.eyebrow {
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--primary);
    font-weight: 600;
    display: block;
}

h1, h2, h3 { color: var(--texto-fuerte); font-weight: 600; }
h2 { font-size: 16px; margin-bottom: 14px; }

.card {
    background: #fff;
    border: 1px solid var(--borde);
    border-radius: 10px;
    padding: 22px 24px;
}

.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--borde);
    border-radius: 10px;
    padding: 18px 20px;
    border-left: 3px solid var(--primary);
}

.stat-card .valor { font-size: 28px; font-weight: 700; color: var(--texto-fuerte); margin-top: 6px; }

label {
    display: block;
    font-size: 13px;
    margin: 14px 0 6px;
    color: var(--texto-fuerte);
    font-weight: 500;
}

input, select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--borde);
    border-radius: 7px;
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    background: #fff;
    color: var(--texto);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-tenue);
}

button, .btn {
    margin-top: 20px;
    padding: 11px 18px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 7px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
    font-family: 'Inter', sans-serif;
    width: auto;
    display: inline-block;
    text-decoration: none;
}

button:hover, .btn:hover { background: var(--primary-oscuro); }

form button[type="submit"]:not(.btn-inline) { width: 100%; }

.mensaje-error, .mensaje-exito {
    padding: 10px 14px;
    border-radius: 7px;
    font-size: 13px;
    margin-top: 16px;
}

.mensaje-error { background: #fbeaea; color: #b23b3b; border: 1px solid #f0d3d1; }
.mensaje-exito { background: #e7f5ec; color: #2e7d4f; border: 1px solid #cfe7d8; }

table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 13px; }

th {
    text-align: left;
    padding: 9px 12px;
    color: var(--texto-suave);
    font-size: 11px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--borde);
    font-weight: 600;
}

td { padding: 11px 12px; border-bottom: 1px solid var(--borde); }
tr:hover td { background: var(--bg-app); }

.dato-mono { font-variant-numeric: tabular-nums; color: var(--texto-fuerte); font-weight: 500; }

.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.badge-pendiente { background: #fdf1dc; color: #97650f; }
.badge-confirmada { background: #e7f5ec; color: #2e7d4f; }
.badge-cancelada { background: #fbeaea; color: #b23b3b; }

/* ===== Componentes tipo hub (dashboard alumno) ===== */

.grid-hub {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 18px;
}

@media (max-width: 1100px) {
    .grid-hub { grid-template-columns: 1fr; }
}

.card-titulo-fila {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.card-titulo-fila h2 { margin-bottom: 0; }

.ver-todos {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}

/* Tarjeta degradada de nivel */
.card-nivel {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-oscuro) 100%);
    color: #fff;
    border-radius: 10px;
    padding: 22px 24px;
    display: flex;
    flex-direction: column;
}

.card-nivel .fila-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-nivel .fila-top span.badge-nivel {
    background: rgba(255,255,255,0.18);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.card-nivel h3 { color: #fff; font-size: 16px; margin: 12px 0 16px; }

.progreso-anillo-fila { display: flex; align-items: center; gap: 18px; }

.progreso-anillo-texto { position: relative; }
.progreso-anillo-pct {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    font-size: 20px; font-weight: 700;
}

.progreso-meta { flex: 1; }
.progreso-meta .etiqueta { font-size: 11px; opacity: 0.8; margin-bottom: 4px; }
.progreso-meta .texto { font-size: 13.5px; font-weight: 500; line-height: 1.4; margin-bottom: 10px; }

.barra-mini {
    height: 6px;
    background: rgba(255,255,255,0.22);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 6px;
}
.barra-mini-fill { height: 100%; background: #fff; border-radius: 10px; }
.progreso-meta .conteo { font-size: 11.5px; opacity: 0.85; }

.card-nivel .btn-blanco {
    margin-top: 18px;
    background: #fff;
    color: var(--primary-oscuro);
    text-align: center;
    text-decoration: none;
    padding: 10px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
}

/* Mini calendario */
.mini-cal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: 13px; font-weight: 600; color: var(--texto-fuerte); }
.mini-cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
.mini-cal-grid .dia-nombre { font-size: 10px; color: var(--texto-suave); font-weight: 600; padding-bottom: 4px; }
.mini-cal-dia {
    font-size: 12px;
    padding: 6px 0;
    border-radius: 6px;
    color: var(--texto);
    position: relative;
    cursor: pointer !important;
    user-select: none !important;
    transition: all 0.15s ease;
}
.mini-cal-dia:hover:not(.pasado):not(.fuera-mes) {
    background: var(--primary) !important;
    color: #ffffff !important;
    font-weight: 700;
    transform: scale(1.12);
    box-shadow: 0 2px 8px rgba(59, 91, 255, 0.3);
    z-index: 2;
}
.mini-cal-dia.hoy { background: var(--primary); color: #fff; font-weight: 700; }
.mini-cal-dia.pasado { color: #c0c4d0 !important; cursor: not-allowed !important; opacity: 0.45; }
.mini-cal-dia.con-clase::after {
    content: '';
    position: absolute;
    bottom: 2px; left: 50%;
    transform: translateX(-50%);
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--primary);
}
.mini-cal-dia.hoy.con-clase::after { background: #fff; }
.mini-cal-dia.fuera-mes { color: #d3d6de; cursor: default; }

/* Próxima clase */
.badge-tiempo {
    background: var(--primary-tenue);
    color: var(--primary);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}
.proxima-clase-fecha { font-size: 13px; color: var(--texto-suave); margin: 12px 0 4px; display: flex; align-items: center; gap: 6px; }
.proxima-clase-titulo { font-size: 15px; font-weight: 600; color: var(--texto-fuerte); margin-bottom: 4px; }
.proxima-clase-prof { font-size: 12.5px; color: var(--texto-suave); }

/* Listas tipo item (recursos, clases, resúmenes) */
.lista-items { display: flex; flex-direction: column; gap: 4px; }
.lista-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 6px;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
}
.lista-item:hover { background: var(--bg-app); }

.icono-cuadro {
    width: 38px; height: 38px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    background: var(--primary-tenue);
    color: var(--primary);
}

.fecha-cuadro {
    width: 44px; height: 44px;
    border-radius: 8px;
    background: var(--primary-tenue);
    color: var(--primary);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    flex-shrink: 0;
    line-height: 1.1;
}
.fecha-cuadro .mes { font-size: 9px; font-weight: 700; text-transform: uppercase; }
.fecha-cuadro .dia { font-size: 15px; font-weight: 700; }

.lista-item-texto { flex: 1; min-width: 0; }
.lista-item-titulo { font-size: 13.5px; font-weight: 600; color: var(--texto-fuerte); }
.lista-item-sub { font-size: 12px; color: var(--texto-suave); }
.lista-item-accion { color: var(--primary); flex-shrink: 0; }

/* Banners */
.grid-banners { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .grid-banners { grid-template-columns: 1fr; } }

.banner {
    border-radius: 10px;
    padding: 26px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.banner-oscuro { background: var(--sidebar-bg); color: #fff; }
.banner-claro { background: var(--primary-tenue); color: var(--texto-fuerte); }
.banner h3 { font-size: 16px; margin-bottom: 6px; }
.banner-oscuro h3 { color: #fff; }
.banner p { font-size: 13px; opacity: 0.85; max-width: 320px; margin-bottom: 14px; }
.banner .btn { margin-top: 0; }

/* Sidebar: widgets inferiores */
.sidebar-widget {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    padding: 14px;
    margin-top: 10px;
    font-size: 12px;
    color: #cdd4ea;
}
.sidebar-widget strong { color: #fff; display: block; font-size: 13px; margin-bottom: 8px; }
.sidebar-widget .codigo { font-family: monospace; background: rgba(255,255,255,0.1); padding: 6px 8px; border-radius: 6px; display: inline-block; margin: 6px 0; letter-spacing: 0.04em; }
.sidebar-widget a.btn { display: block; text-align: center; margin-top: 8px; padding: 8px; font-size: 12px; }

.app-shell.colapsado .sidebar-widget { display: none; }

/* Badge contador en sidebar (mensajes) */
.nav-contador {
    margin-left: auto;
    background: var(--primary);
    color: #fff;
    font-size: 10.5px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 20px;
}
.sidebar-nav a.activo .nav-contador { background: rgba(255,255,255,0.3); }

/* Avatar dropdown (topbar) */
.avatar-dropdown { position: relative; }
.avatar-dropdown summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px; }
.avatar-dropdown summary::-webkit-details-marker { display: none; }
.avatar-dropdown .menu {
    position: absolute; right: 0; top: calc(100% + 8px);
    background: #fff; border: 1px solid var(--borde); border-radius: 8px;
    min-width: 160px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); z-index: 10; overflow: hidden;
}
.avatar-dropdown .menu a {
    display: block; padding: 10px 14px; font-size: 13px; text-decoration: none; color: var(--texto);
}
.avatar-dropdown .menu a:hover { background: var(--bg-app); }

.campanita { position: relative; color: var(--texto-suave); display: flex; }