/*
 * Matrícula IE Sucre – Sistema de diseño
 * Paleta institucional: azul profundo + ámbar, fondos cálidos
 */

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

:root {
    /* Institucionales */
    --color-primary: #0A2342;
    --color-primary-dark: #061829;
    --color-accent: #D4A017;
    --color-accent-hover: #b8860b;
    --color-accent-light: #f5e6c8;

    /* Neutros */
    --color-bg: #f8f6f2;
    --color-bg-card: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #5c5c5c;
    --color-border: #e0ddd6;
    --color-border-focus: var(--color-primary);

    /* Semánticos */
    --color-success: #2d6a4f;
    --color-success-bg: #d8f3dc;
    --color-error: #b91c1c;
    --color-error-bg: #fee2e2;
    --color-warning: #b45309;
    --color-warning-bg: #fff3e0;
    --color-info: #0A2342;
    --color-info-bg: #e3eef7;

    /* Tipografía */
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --text-base: 1rem;
    --text-sm: 0.875rem;
    --text-xs: 0.8125rem;
    --leading-tight: 1.25;
    --leading-normal: 1.5;

    /* Espaciado y forma */
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 2px 12px rgba(10, 35, 66, 0.08);
    --shadow-hover: 0 4px 20px rgba(10, 35, 66, 0.12);
    --page-max: 640px;
    --page-padding: 1.5rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background: var(--color-bg);
    margin: 0;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Contenedor principal de página */
.page {
    max-width: var(--page-max);
    margin: 0 auto;
    padding: var(--page-padding);
    padding-top: 2rem;
    padding-bottom: 3rem;
}

/* Logo de la institución (centrado en todas las páginas) */
.page-logo {
    text-align: center;
    margin-bottom: 1.25rem;
}

.page-logo img {
    width: 140px;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Cabecera de página */
.page-header {
    margin-bottom: 1.75rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0 0 0.25rem 0;
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* Tarjeta / bloque de contenido */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-border);
}

.card + .card {
    margin-top: 0;
}

/* Títulos de sección dentro de formularios */
.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 1.5rem 0 0.75rem 0;
    padding-bottom: 0.35rem;
    border-bottom: 2px solid var(--color-accent-light);
}

.section-title:first-child {
    margin-top: 0;
}

/* Formularios */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="number"],
select,
textarea {
    width: 100%;
    font-family: inherit;
    font-size: var(--text-base);
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-card);
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(10, 35, 66, 0.12);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    margin-right: 0.5rem;
    accent-color: var(--color-primary);
    vertical-align: middle;
}

/* Grid de dos columnas en formularios */
.grid2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 520px) {
    .grid2 {
        grid-template-columns: 1fr;
    }
}

/* Texto de ayuda bajo un campo */
.hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

/* Alertas / avisos */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

.alert--info {
    background: var(--color-info-bg);
    color: var(--color-info);
    border: 1px solid rgba(10, 35, 66, 0.15);
}

.alert--success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(45, 106, 79, 0.2);
}

.alert--error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid rgba(185, 28, 28, 0.2);
}

.alert--warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(180, 83, 9, 0.2);
}

/* Botones */
.btn {
    display: inline-block;
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-accent {
    background: var(--color-accent);
    color: var(--color-primary);
}

.btn-accent:hover {
    background: var(--color-accent-hover);
    color: #fff;
}

.btn-block {
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: var(--text-sm);
}

.btn .btn-icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.35rem;
    flex-shrink: 0;
}

.btn span {
    vertical-align: middle;
}

/* Editar: botón con buen contraste (texto claro sobre fondo) */
.btn-edit {
    background: var(--color-primary);
    color: #fff !important;
    border: 1px solid var(--color-primary-dark);
}

.btn-edit:hover {
    background: var(--color-primary-dark);
    color: #fff !important;
}

/* Descargar ficha: aspecto de botón con borde */
.btn-download {
    background: var(--color-bg);
    color: var(--color-primary) !important;
    border: 2px solid var(--color-primary);
}

.btn-download:hover {
    background: var(--color-primary);
    color: #fff !important;
}

.btn-lg {
    padding: 0.85rem 1.25rem;
    font-size: 1.05rem;
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-danger {
    background: var(--color-error);
    color: #fff;
}

.btn-danger:hover {
    background: #991b1b;
    color: #fff;
}

/* Enlaces tipo "Volver" */
.link-back {
    display: inline-block;
    margin-top: 1.25rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
}

.link-back a {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
}

.link-back a:hover {
    text-decoration: underline;
}

.link-back + .link-back {
    margin-left: 1rem;
}

/* Lista de opciones / estudiantes */
.list-cards {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-cards li {
    margin-bottom: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.list-cards li:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow);
}

.list-cards a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.list-cards a:hover {
    text-decoration: underline;
}

.list-cards .meta {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* Enlaces de acción secundaria en lista (PDF, Eliminar) */
.list-cards .action {
    font-size: var(--text-sm);
    margin-left: 0.5rem;
}

.list-cards .action--danger {
    color: var(--color-error);
}

/* Lista de estudiantes: nombre, documento, botones Editar / Descargar */
.list-cards--estudiantes .list-cards__item-estudiante {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.list-cards--estudiantes .estudiante-info {
    flex: 1 1 180px;
    min-width: 0;
}

.list-cards--estudiantes .estudiante-nombre {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 1.05rem;
}

.list-cards--estudiantes .estudiante-documento {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: 0.2rem;
}

.list-cards--estudiantes .estudiante-acciones {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.list-cards--estudiantes .estudiante-acciones .btn {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

/* Contraste en lista: que .list-cards a no opaque el texto de los botones */
.list-cards--estudiantes .estudiante-acciones .btn-edit,
.list-cards--estudiantes .estudiante-acciones .btn-edit:hover {
    color: #fff !important;
}
.list-cards--estudiantes .estudiante-acciones .btn-download {
    color: var(--color-primary) !important;
}
.list-cards--estudiantes .estudiante-acciones .btn-download:hover {
    color: #fff !important;
}
.list-cards--estudiantes .estudiante-acciones .btn-danger,
.list-cards--estudiantes .estudiante-acciones .btn-danger:hover {
    color: #fff !important;
}

/* Bloque del botón "Agregar otro estudiante" */
.card-footer-actions {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}

.card-footer-actions .btn-block {
    margin-top: 0;
}

/* Acciones al pie del formulario (Volver a elegir estudiante, Inicio) */
.form-footer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 1.25rem;
}

.form-footer-actions .btn {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.page-footer .form-footer-actions {
    margin-top: 0;
}

/* Pie de página con enlaces */
.page-footer {
    margin-top: 2rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
    font-size: var(--text-sm);
}

.page-footer a {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
}

.page-footer a:hover {
    text-decoration: underline;
}

/* Página de inicio: bloques de entrada */
.entry-cards {
    display: grid;
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.entry-cards li a {
    display: block;
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.entry-cards li a:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    box-shadow: var(--shadow);
}

.entry-cards .entry-desc {
    display: block;
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-text-muted);
    margin-top: 0.35rem;
}

/* Mensaje de error en formulario */
.form-error {
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-bottom: 0.75rem;
}

/* Aviso de certificación (destacado) */
.alert--cert {
    background: var(--color-accent-light);
    color: var(--color-primary);
    border: 1px solid rgba(212, 160, 23, 0.4);
}

/* Contenido largo (política, etc.) */
.card h2 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 1.25rem 0 0.5rem 0;
}

.card h2:first-child {
    margin-top: 0;
}

.card p {
    margin: 0.5rem 0;
}

.card ul {
    margin: 0.5rem 0 1rem 1.25rem;
    padding-left: 1.25rem;
}