@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,wght@0,500;0,600;0,700;1,500&family=Source+Sans+3:wght@400;500;600;700;800&display=swap');

:root {
    /* Paleta institucional clara: azul académico + acento cálido, con
       tarjetas blancas y profundidad por sombra (no por fondos oscuros) —
       el registro visual de un portal de universidad real. */
    --cv-bg: #f3f5fb;
    --cv-surface: #ffffff;
    --cv-surface-2: #eef1fa;
    --cv-border: #e1e5f0;
    --cv-text: #1c2333;
    --cv-text-dim: #66708a;
    --cv-primary: #2949b8;
    --cv-primary-dark: #1d3690;
    --cv-primary-tint: #eaeefb;
    --cv-accent: #e2790f;
    --cv-accent-dark: #c2650a;
    --cv-success: #178a4c;
    --cv-warning: #b1710a;
    --cv-danger: #cc3340;

    --cv-shadow-sm: 0 1px 2px rgba(23, 33, 66, 0.06), 0 1px 1px rgba(23, 33, 66, 0.04);
    --cv-shadow-md: 0 8px 20px rgba(23, 33, 66, 0.09), 0 2px 6px rgba(23, 33, 66, 0.06);
    --cv-shadow-lift: 0 14px 28px rgba(23, 33, 66, 0.14), 0 4px 10px rgba(23, 33, 66, 0.08);

    --cv-font-serif: 'Source Serif 4', Cambria, Georgia, 'Times New Roman', serif;
    --cv-font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

body.campus-virtual {
    margin: 0;
    background:
        radial-gradient(1100px 420px at 12% -8%, rgba(41, 73, 184, 0.07), transparent 60%),
        radial-gradient(900px 380px at 100% 0%, rgba(226, 121, 15, 0.06), transparent 55%),
        var(--cv-bg);
    color: var(--cv-text);
    font-family: var(--cv-font-sans);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .cv-brand, .cv-seal-title {
    font-family: var(--cv-font-serif);
    font-weight: 600;
    letter-spacing: 0.005em;
    color: #10162a;
}

a { color: var(--cv-primary); }

/* ===== Encabezado ===== */

.cv-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.75rem;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--cv-border);
    position: sticky;
    top: 0;
    z-index: 40;
}

.cv-header a.cv-brand, .cv-header span.cv-brand {
    display: inline-flex;
    align-items: center;
    color: #10162a;
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
    letter-spacing: 0.01em;
}

.cv-header a.cv-brand::before, .cv-header span.cv-brand::before {
    content: '';
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.65em;
    border-radius: 7px;
    background: linear-gradient(135deg, var(--cv-primary) 0%, var(--cv-primary-dark) 60%, var(--cv-accent) 145%);
    box-shadow: var(--cv-shadow-sm);
}

.cv-header .cv-user {
    color: var(--cv-text-dim);
    font-size: 0.85rem;
    font-family: var(--cv-font-sans);
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.cv-header .cv-user a {
    color: var(--cv-danger);
    text-decoration: none;
    font-weight: 600;
}

.cv-header .cv-user a:hover { text-decoration: underline; }

.cv-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2.25rem 1.5rem 4rem;
}

/* ===== Tarjetas ===== */

.cv-card {
    background: var(--cv-surface);
    border: 1px solid var(--cv-border);
    border-radius: 14px;
    padding: 1.4rem 1.6rem;
    margin-bottom: 1.1rem;
    box-shadow: var(--cv-shadow-sm);
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.cv-card:has(> a.cv-link-block):hover {
    transform: translateY(-3px);
    box-shadow: var(--cv-shadow-md);
    border-color: #ccd4ec;
}

.cv-card h2, .cv-card h3 { margin-top: 0; }

.cv-card a.cv-link-block {
    display: block;
    color: inherit;
    text-decoration: none;
}

.cv-card a.cv-link-block:hover h3, .cv-card a.cv-link-block:hover h2 { color: var(--cv-primary); }

.cv-breadcrumb {
    color: var(--cv-text-dim);
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.cv-breadcrumb a { color: var(--cv-text-dim); text-decoration: none; }
.cv-breadcrumb a:hover { color: var(--cv-primary); text-decoration: underline; }

/* ===== Progreso ===== */

.cv-progress-track {
    background: var(--cv-surface-2);
    border-radius: 999px;
    height: 10px;
    overflow: hidden;
    margin: 0.6rem 0;
    box-shadow: inset 0 1px 2px rgba(23, 33, 66, 0.08);
}

.cv-progress-fill {
    background: linear-gradient(90deg, var(--cv-primary) 0%, #4d6be0 100%);
    height: 100%;
    border-radius: 999px;
    transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== Insignias ===== */

.cv-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3em;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.cv-badge-pendiente { background: #fdf1e2; color: var(--cv-warning); }
.cv-badge-progreso { background: var(--cv-primary-tint); color: var(--cv-primary); }
.cv-badge-completa { background: #e5f6ec; color: var(--cv-success); }
.cv-badge-bloqueada { background: #eef0f5; color: var(--cv-text-dim); }

/* ===== Botones ===== */

.cv-btn {
    display: inline-block;
    background: var(--cv-primary);
    color: #ffffff;
    border: none;
    border-radius: 9px;
    padding: 0.65rem 1.3rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 1px 2px rgba(23, 33, 66, 0.12);
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.cv-btn:hover { background: var(--cv-primary-dark); transform: translateY(-1px); box-shadow: var(--cv-shadow-sm); }
.cv-btn:active { transform: translateY(0); }

.cv-btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ===== Formularios ===== */

.cv-form input[type=text], .cv-form input[type=password], .cv-form textarea, .cv-form input[type=file] {
    width: 100%;
    background: var(--cv-surface);
    border: 1.5px solid var(--cv-border);
    border-radius: 9px;
    color: var(--cv-text);
    padding: 0.65rem 0.85rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.cv-form input:focus, .cv-form textarea:focus {
    outline: none;
    border-color: var(--cv-primary);
    box-shadow: 0 0 0 3px var(--cv-primary-tint);
}

.cv-form label { display: block; margin-bottom: 0.35rem; color: var(--cv-text-dim); font-size: 0.85rem; font-weight: 600; }

.cv-alert {
    padding: 0.8rem 1.1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    font-size: 0.92rem;
}

.cv-alert-error { background: #fdedee; color: var(--cv-danger); border-color: #f6d3d6; }
.cv-alert-success { background: #e9f7ef; color: var(--cv-success); border-color: #cdedd9; }

/* ===== Login ===== */

.cv-login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(1100px 460px at 15% 8%, rgba(41, 73, 184, 0.10), transparent 60%),
        radial-gradient(900px 420px at 90% 90%, rgba(226, 121, 15, 0.09), transparent 55%),
        var(--cv-bg);
}

.cv-login-box {
    width: 100%;
    max-width: 380px;
    background: var(--cv-surface);
    border: 1px solid var(--cv-border);
    border-radius: 18px;
    padding: 2.5rem 2.25rem;
    box-shadow: var(--cv-shadow-lift);
}

.cv-login-box h2 {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
}

.cv-login-box h2::before {
    content: '';
    display: inline-block;
    width: 2rem;
    height: 2rem;
    margin-right: 0.7rem;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--cv-primary) 0%, var(--cv-primary-dark) 60%, var(--cv-accent) 145%);
    box-shadow: var(--cv-shadow-sm);
}

/* ===== Simulación (árbol de decisiones) ===== */

.cv-sim-nodo {
    background: var(--cv-surface-2);
    border: 1px solid var(--cv-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1rem 0;
    line-height: 1.6;
}

.cv-sim-opcion {
    display: block;
    width: 100%;
    text-align: left;
    background: var(--cv-surface);
    border: 1.5px solid var(--cv-border);
    color: var(--cv-text);
    border-radius: 9px;
    padding: 0.8rem 1.1rem;
    margin-bottom: 0.6rem;
    cursor: pointer;
    font-size: 0.95rem;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.cv-sim-opcion:hover { border-color: var(--cv-primary); background: var(--cv-primary-tint); color: var(--cv-primary-dark); transform: translateX(2px); }

.cv-sim-vars {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--cv-text-dim);
}

/* ===== Lecturas ilustradas ===== */

.cv-lectura-contenido h3 { margin-top: 1.75rem; }
.cv-lectura-contenido p { line-height: 1.7; }
.cv-lectura-contenido img {
    max-width: 100%;
    border-radius: 12px;
    background: #fff;
    margin: 1.25rem 0;
    display: block;
    border: 1px solid var(--cv-border);
    box-shadow: var(--cv-shadow-sm);
}
.cv-lectura-contenido ul, .cv-lectura-contenido ol { line-height: 1.8; padding-left: 1.3rem; }

/* ===== Editor de diagramas de flujo ===== */

.cv-diagrama-toolbar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.cv-paleta-btn {
    background: var(--cv-surface);
    border: 1.5px solid var(--cv-border);
    color: var(--cv-text);
    border-radius: 8px;
    padding: 0.45rem 0.85rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.cv-paleta-btn:hover { border-color: var(--cv-primary); color: var(--cv-primary); background: var(--cv-primary-tint); }

.cv-diagrama-canvas {
    position: relative;
    min-width: 900px;
    min-height: 480px;
    background-image: radial-gradient(circle, #d7dcec 1.2px, transparent 1.2px);
    background-size: 22px 22px;
    background-color: var(--cv-surface-2);
    border: 1px solid var(--cv-border);
    border-radius: 14px;
    overflow: auto;
    margin-bottom: 1rem;
}

.cv-diagrama-svg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }

.cv-conexion { stroke: var(--cv-primary); stroke-width: 2; fill: none; }
.cv-conexion-temporal { stroke-dasharray: 4 4; opacity: 0.6; }
.cv-conexion-etiqueta { font-size: 11px; font-weight: 700; }
.cv-conexion-etiqueta-si { fill: var(--cv-success); }
.cv-conexion-etiqueta-no { fill: var(--cv-danger); }

.cv-nodo {
    position: absolute;
    width: 150px;
    min-height: 60px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.9rem;
    background: var(--cv-surface);
    border: 2px solid var(--cv-border);
    color: var(--cv-text);
    font-size: 0.8rem;
    text-align: center;
    cursor: grab;
    user-select: none;
    box-shadow: var(--cv-shadow-sm);
}

.cv-nodo-inicio, .cv-nodo-fin { border-radius: 999px; border-color: var(--cv-primary); }
.cv-nodo-fin { border-color: var(--cv-danger); }
.cv-nodo-proceso { border-radius: 8px; }
.cv-nodo-entrada, .cv-nodo-salida {
    clip-path: polygon(12% 0, 100% 0, 88% 100%, 0 100%);
    padding-left: 1.4rem; padding-right: 1.4rem;
}
.cv-nodo-decision {
    clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
    min-height: 100px;
    background: var(--cv-surface-2);
}

.cv-nodo-seleccionado { outline: 2px solid var(--cv-primary); }
.cv-nodo-activo { box-shadow: 0 0 0 3px rgba(41, 73, 184, 0.35); }

.cv-nodo-texto { outline: none; width: 100%; word-break: break-word; }

.cv-nodo-borrar {
    position: absolute;
    top: -10px; right: -10px;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--cv-danger);
    color: #ffffff;
    border: 2px solid #fff;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--cv-shadow-sm);
}

.cv-puerto {
    position: absolute;
    right: -7px; top: 50%;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--cv-primary);
    border: 2px solid var(--cv-surface);
    transform: translateY(-50%);
    cursor: crosshair;
    pointer-events: all;
    box-shadow: var(--cv-shadow-sm);
}

.cv-puerto-si { background: var(--cv-success); }
.cv-puerto-no { background: var(--cv-danger); }

.cv-prueba-vars { border-collapse: collapse; margin: 0.5rem 0; font-size: 0.85rem; width: 100%; }
.cv-prueba-vars th { background: var(--cv-surface-2); text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.03em; color: var(--cv-text-dim); }
.cv-prueba-vars th, .cv-prueba-vars td { border: 1px solid var(--cv-border); padding: 0.45rem 0.7rem; text-align: left; }
.cv-prueba-caso { font-size: 0.85rem; margin-bottom: 0.4rem; color: var(--cv-text-dim); }
.cv-prueba-salida { margin: 0.5rem 0; }

.cv-prueba-nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--cv-text-dim);
}

.cv-paleta-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ===== Pestañas (Diagrama / Pseudocódigo) ===== */

.cv-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--cv-border);
    margin: 1rem 0 1.25rem;
}

.cv-tab-btn {
    background: none;
    border: none;
    color: var(--cv-text-dim);
    padding: 0.6rem 0.2rem;
    margin-bottom: -1px;
    border-bottom: 2.5px solid transparent;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.cv-tab-btn + .cv-tab-btn { margin-left: 1rem; }

.cv-tab-btn:hover { color: var(--cv-text); }

.cv-tab-btn.cv-tab-activa { color: var(--cv-primary); border-bottom-color: var(--cv-primary); }

/* ===== Editor de pseudocódigo ===== */

.cv-pseudo-textarea {
    width: 100%;
    min-height: 320px;
    background: #10182c;
    color: #e7ebf7;
    border: 1px solid var(--cv-border);
    border-radius: 10px;
    padding: 1rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    tab-size: 4;
    resize: vertical;
    box-sizing: border-box;
}

.cv-pseudo-toolbar {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 0.6rem;
}

.cv-autocomplete-menu {
    display: none;
    position: fixed;
    z-index: 50;
    background: #10182c;
    border: 1px solid #2b3552;
    border-radius: 8px;
    box-shadow: var(--cv-shadow-lift);
    min-width: 160px;
    max-height: 220px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
}

.cv-autocomplete-item { padding: 0.35rem 0.7rem; cursor: pointer; color: #e7ebf7; }
.cv-autocomplete-item:hover, .cv-autocomplete-activo { background: var(--cv-primary); color: #ffffff; }

/* ===== Consola interactiva de pseudocódigo ===== */

.cv-consola {
    background: #0a0f1e;
    border: 1px solid #1e2740;
    border-radius: 10px;
    padding: 0.85rem 1rem;
    min-height: 140px;
    max-height: 320px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    line-height: 1.6;
}

.cv-consola-linea { white-space: pre-wrap; word-break: break-word; }
.cv-consola-salida { color: #e7ebf7; }
.cv-consola-eco { color: #7fa0ff; }
.cv-consola-error { color: #ff8f8f; }
.cv-consola-fin { color: #6fe0a0; margin-top: 0.3rem; }

.cv-consola-entrada-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #f5c168;
    margin-top: 0.2rem;
}

.cv-consola-input {
    background: #1a2340;
    border: 1px solid #4d6be0;
    border-radius: 5px;
    color: #e7ebf7;
    padding: 0.15rem 0.5rem;
    font-family: inherit;
    font-size: inherit;
    width: 140px;
}