/* =========================================================
   PROF PSEINT - Tema visual Marron & Dorado
   ========================================================= */
:root {
    --marron-oscuro: #2e1a12;
    --marron: #4e342e;
    --marron-medio: #6d4c41;
    --marron-claro: #8d6e63;
    --dorado: #d4af37;
    --dorado-claro: #f2d675;
    --dorado-suave: #f7e9c1;
    --crema: #fbf3e3;
    --blanco: #fffdf8;
    --texto-oscuro: #2b1e14;
    --exito: #4c7a3d;
    --error: #a5342a;
    --sombra: 0 6px 18px rgba(46, 26, 18, 0.18);
    --radio: 12px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Verdana, sans-serif;
    background: linear-gradient(180deg, var(--crema) 0%, #f3e4c6 100%);
    color: var(--texto-oscuro);
    min-height: 100vh;
}

.contenedor {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Barra superior ---------- */
.topbar {
    background: linear-gradient(90deg, var(--marron-oscuro), var(--marron));
    box-shadow: var(--sombra);
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
}
.marca {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--crema);
    text-decoration: none;
    letter-spacing: 0.5px;
}
.marca-icono { color: var(--dorado); }
.dorado { color: var(--dorado); }

.nav-principal a {
    color: var(--dorado-suave);
    text-decoration: none;
    margin-left: 18px;
    font-weight: 500;
    transition: color .2s;
}
.nav-principal a:hover { color: var(--dorado); }
.btn-nav-registro {
    background: var(--dorado);
    color: var(--marron-oscuro) !important;
    padding: 8px 16px;
    border-radius: 30px;
    font-weight: 700 !important;
}
.btn-nav-salir {
    border: 1px solid var(--dorado);
    padding: 6px 14px;
    border-radius: 30px;
}

/* ---------- Pagina / secciones ---------- */
.pagina { padding: 36px 20px 60px; }

.tarjeta {
    background: var(--blanco);
    border: 1px solid #e6d3a3;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    padding: 28px;
    margin-bottom: 24px;
}

h1, h2, h3 { color: var(--marron-oscuro); }
h1 { border-bottom: 3px solid var(--dorado); display: inline-block; padding-bottom: 6px; }

/* ---------- Hero / portada ---------- */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--marron-oscuro), var(--marron-medio));
    color: var(--crema);
    border-radius: var(--radio);
    margin-bottom: 30px;
}
.hero h1 { color: var(--crema); border-color: var(--dorado); }
.hero p { color: var(--dorado-suave); font-size: 1.1rem; }

/* ---------- Formularios ---------- */
.form-caja {
    max-width: 460px;
    margin: 0 auto;
}
label {
    display: block;
    font-weight: 600;
    margin: 14px 0 6px;
    color: var(--marron);
}
input[type=text], input[type=email], input[type=password], input[type=datetime-local], textarea, select {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--marron-claro);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--crema);
    color: var(--texto-oscuro);
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--dorado);
    box-shadow: 0 0 0 3px rgba(212,175,55,0.25);
}

.radio-grupo { display: flex; gap: 20px; margin-top: 8px; }
.radio-grupo label { display: flex; align-items: center; gap: 6px; font-weight: 500; margin: 0; }

.btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--dorado), #b8942a);
    color: var(--marron-oscuro);
    border: none;
    padding: 12px 26px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 20px;
    transition: transform .15s, box-shadow .15s;
    text-decoration: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--sombra); }
.btn-secundario {
    background: transparent;
    color: var(--marron);
    border: 2px solid var(--marron-claro);
}
.btn-peligro {
    background: linear-gradient(135deg, #c0463a, #8f2f26);
    color: var(--crema);
}
.btn-pequeno { padding: 7px 16px; font-size: 0.85rem; margin-top: 0; }

/* ---------- Alertas ---------- */
.alerta {
    padding: 12px 18px;
    border-radius: 8px;
    margin-bottom: 18px;
    font-weight: 500;
}
.alerta-exito { background: #e4f1de; color: var(--exito); border: 1px solid #b7d8a8; }
.alerta-error { background: #f6dedb; color: var(--error); border: 1px solid #e3aca4; }
.alerta-info { background: var(--dorado-suave); color: var(--marron-oscuro); border: 1px solid var(--dorado); }

/* ---------- Tablas ---------- */
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { text-align: left; padding: 12px; border-bottom: 1px solid #e6d3a3; }
th { background: var(--marron-oscuro); color: var(--dorado-suave); }
tr:hover { background: #fbf0d8; }

.insignia {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}
.insignia-pendiente { background: #f3d9a3; color: #6d4c00; }
.insignia-calificado { background: #cfe8c2; color: #285a1c; }

/* ---------- Editor PSeInt ---------- */
.editor-envoltorio {
    background: var(--marron-oscuro);
    border-radius: var(--radio);
    padding: 18px;
    box-shadow: var(--sombra);
}
.editor-barra {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    color: var(--dorado-suave);
}
.editor-barra .aviso-seguridad {
    font-size: 0.82rem;
    color: var(--dorado);
    border: 1px dashed var(--dorado);
    padding: 4px 10px;
    border-radius: 6px;
}
textarea#editor-codigo {
    width: 100%;
    min-height: 380px;
    background: #1b100a;
    color: #f2d675;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.98rem;
    line-height: 1.5;
    border: 1px solid var(--marron-claro);
    border-radius: 8px;
    padding: 16px;
    resize: vertical;
    tab-size: 4;
    user-select: text; /* se puede escribir/seleccionar, pero no pegar/copiar (bloqueado por JS) */
}
.consola-salida {
    background: #0f0906;
    color: #cde9c8;
    font-family: 'Consolas', monospace;
    padding: 14px;
    border-radius: 8px;
    margin-top: 14px;
    min-height: 90px;
    white-space: pre-wrap;
}
.editor-botones { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Calificacion ---------- */
.nota-grande {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--dorado);
    background: var(--marron-oscuro);
    display: inline-block;
    padding: 10px 24px;
    border-radius: 10px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
    .topbar-inner { flex-direction: column; gap: 10px; }
    .nav-principal a { margin: 0 8px; }
}