/* ====================================
   MÓDULO DE SECCIONES — Estilos autosuficientes
   No depende de Bootstrap; usa variables de dashboard.css si está cargado
==================================== */

/* Variables de respaldo por si dashboard.css no carga */
.secciones-main {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --primary: #0ea5e9;
    --primary-hover: #0284c7;
    --danger: #ef4444;
}
[data-theme="dark"] .secciones-main {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --primary: #38bdf8;
    --primary-hover: #7dd3fc;
}

/* Botones base (sin depender de dashboard) */
.secciones-main .btn,
.secciones-modal .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: inherit;
    line-height: 1.5;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.secciones-main .btn-primary,
.secciones-modal .btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.secciones-main .btn-primary:hover:not(:disabled),
.secciones-modal .btn-primary:hover:not(:disabled) {
    filter: brightness(1.1);
}
.secciones-main .btn-secondary,
.secciones-modal .btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.secciones-main .btn-secondary:hover:not(:disabled),
.secciones-modal .btn-secondary:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

/* Aviso: primer grado → Horarios */
.secciones-first-next {
    margin: 0 0 1rem;
    padding: 1rem 1.15rem;
    border-radius: 12px;
    border: 1px solid rgba(14, 165, 233, 0.35);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(59, 130, 246, 0.08) 100%);
    max-width: 640px;
}
.secciones-first-next[hidden] {
    display: none !important;
}
.secciones-first-next-inner {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.secciones-first-next-icon {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 10px;
    background: rgba(14, 165, 233, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary, #0ea5e9);
    font-size: 1.15rem;
}
.secciones-first-next-title {
    display: block;
    font-size: 1rem;
    margin: 0 0 0.35rem;
    color: var(--text-primary, #1e293b);
}
.secciones-first-next-grade-line {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
    color: var(--text-primary, #1e293b);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}
.secciones-first-next-grade-line[hidden] {
    display: none !important;
}
.secciones-first-next-desc {
    margin: 0 0 0.85rem;
    font-size: 0.92rem;
    line-height: 1.45;
    color: var(--text-secondary, #64748b);
}
.secciones-first-next-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}
.secciones-first-next-cta {
    text-decoration: none;
}
.secciones-first-next-dismiss {
    border-color: var(--border-color, #e2e8f0);
}

.secciones-first-next--after-subject {
    border-color: rgba(34, 197, 94, 0.35);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(14, 165, 233, 0.08) 100%);
}
.secciones-first-next--after-subject .secciones-first-next-icon {
    background: rgba(34, 197, 94, 0.18);
    color: #16a34a;
}
.secciones-first-next-grade-line--inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.25rem;
    margin-bottom: 0.65rem;
}
.secciones-first-next-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.9rem;
    color: var(--text-primary, #1e293b);
}

/* Header del módulo */
.secciones-main .page-header {
    margin-bottom: 1rem;
}
.secciones-main .module-header {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.secciones-main .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.secciones-main .header-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.secciones-main .header-context {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.secciones-main .header-context--primary {
    flex: 1;
    min-width: 0;
}
.secciones-main .header-context .context-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}
.secciones-main .header-context .context-select {
    padding: 0.375rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}
.secciones-main .header-context .context-select:focus {
    border-color: var(--primary);
}
.secciones-main .header-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}
.secciones-main .module-title-section {
    flex: 1;
    min-width: 0;
}
.secciones-main .module-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}
.secciones-main .module-icon {
    color: var(--primary);
    font-size: 1.5rem;
}
.secciones-main .module-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin: 0;
    line-height: 1.4;
}

/* Preloader (por si preloader-dark.css no carga) */
#preloader .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(14, 165, 233, 0.25);
    border-top-color: var(--primary, #0ea5e9);
    border-radius: 50%;
    animation: secciones-spin 0.8s linear infinite;
}
@keyframes secciones-spin {
    to { transform: rotate(360deg); }
}

/* Contenedor principal: flex 1 0 auto = paridad planeamiento (no min-height:0: evita footer a media pantalla) */
.app-container:has(.dashboard-layout) .dashboard-main .main-content.secciones-main,
.secciones-main.main-content {
    flex: 1 0 auto;
    min-width: 0;
    min-height: min-content;
    width: 100% !important;
    max-width: none !important;
    box-sizing: border-box;
    padding: clamp(0.75rem, 2vw, 1.5rem) clamp(1rem, 4vw, 2rem);
}

.secciones-content {
    margin-top: 1rem;
    width: 100%;
    max-width: none;
}

/* Modal crear grado */
.secciones-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    box-sizing: border-box;
}

.secciones-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.secciones-modal-box {
    position: relative;
    background: var(--bg-secondary, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 16px;
    padding: 0;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

[data-theme="dark"] .secciones-modal-box {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* Header del modal */
.secciones-modal-header {
    padding: 2rem 2rem 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.08) 0%, rgba(14, 165, 233, 0.03) 100%);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    text-align: center;
}

[data-theme="dark"] .secciones-modal-header {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.12) 0%, rgba(56, 189, 248, 0.05) 100%);
    border-bottom-color: var(--border-color);
}

.secciones-modal-icon-wrapper {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem auto;
    background: linear-gradient(135deg, var(--primary, #0ea5e9) 0%, var(--primary-hover, #0284c7) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.secciones-modal-icon-wrapper i {
    font-size: 1.75rem;
    color: #fff;
}

.secciones-modal-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
    line-height: 1.3;
}

.secciones-modal-subtitle {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-secondary, #64748b);
    line-height: 1.5;
}

/* Body del modal */
.secciones-modal-body {
    padding: 1.75rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
    overflow-y: auto;
    max-height: calc(100vh - 280px);
}

/* Grupos de formulario */
.secciones-form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.secciones-form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin: 0;
}

.secciones-form-label i {
    color: var(--primary, #0ea5e9);
    font-size: 1rem;
    width: 18px;
    text-align: center;
}

.secciones-optional {
    font-weight: 400;
    color: var(--text-secondary, #64748b);
    font-size: 0.875rem;
}

.secciones-form-hint {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--text-secondary, #64748b);
    line-height: 1.4;
    padding-left: 1.75rem;
}

.secciones-modal-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    border: 2px solid var(--border-color, #e2e8f0);
    border-radius: 10px;
    background: var(--bg-primary, #fff);
    color: var(--text-primary, #1e293b);
    box-sizing: border-box;
    transition: all 0.2s ease;
    font-family: inherit;
}

.secciones-modal-input:hover {
    border-color: var(--primary, #0ea5e9);
    background: var(--bg-secondary, #fff);
}

.secciones-modal-input:focus {
    outline: none;
    border-color: var(--primary, #0ea5e9);
    background: var(--bg-secondary, #fff);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

[data-theme="dark"] .secciones-modal-input:focus {
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.secciones-modal-input::placeholder {
    color: var(--text-muted, #94a3b8);
}

.secciones-modal-select {
    cursor: pointer;
    padding-right: 2.75rem;
    background-color: var(--bg-primary, #fff);
}

/* Ocultar flecha nativa en diferentes navegadores */
.secciones-modal-select::-webkit-appearance {
    -webkit-appearance: none;
}

.secciones-modal-select::-moz-appearance {
    -moz-appearance: none;
}

.secciones-modal-select::-ms-expand {
    display: none;
}

/* Asegurar que el fondo no se repita */
.secciones-modal-select option {
    background-color: var(--bg-primary, #fff);
    color: var(--text-primary, #1e293b);
    padding: 0.5rem;
}

/*
 * Modal "Agregar materia": un solo <select id="addSubjectSelect">.
 * overflow:hidden en la caja + overflow:auto en el body recortan o interfieren con el
 * desplegable nativo (lista larga / optgroups) → a veces hace falta "doble clic".
 */
#addSubjectModal.secciones-modal .secciones-modal-box {
    overflow: visible;
}

#addSubjectModal.secciones-modal .secciones-modal-body {
    overflow: visible;
    max-height: min(75vh, 560px);
}

/* Menú nativo fiable: evitar que reglas genéricas dejen el select sin apariencia de lista */
#addSubjectSelect.secciones-modal-select {
    appearance: auto;
    -webkit-appearance: menulist-button;
    padding-right: 0.75rem;
}

/* Acciones del modal */
.secciones-modal-actions {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    border-top: 1px solid var(--border-color, #e2e8f0);
    background: var(--bg-tertiary, #f8fafc);
}

[data-theme="dark"] .secciones-modal-actions {
    background: var(--bg-tertiary);
    border-top-color: var(--border-color);
}

.secciones-modal-actions .btn {
    min-width: 120px;
    padding: 0.625rem 1.25rem;
    font-weight: 600;
}

.secciones-modal-actions .btn i {
    margin-right: 0.375rem;
}

.secciones-modal .btn-danger {
    background: var(--danger, #ef4444);
    color: #fff;
    border-color: var(--danger, #ef4444);
    font-weight: 600;
}

.secciones-modal .btn-danger:hover:not(:disabled) {
    filter: brightness(1.06);
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.32);
}

.secciones-modal .btn-danger:disabled {
    opacity: 0.72;
    cursor: not-allowed;
}

/* Modal: confirmar eliminación de grado (armonizado con el resto de modales del módulo) */
.delete-grade-confirm-modal.secciones-modal {
    padding: 1rem;
}

.delete-grade-confirm-modal .delete-grade-confirm-modal__box {
    max-width: 440px;
    width: 100%;
    animation: deleteGradeConfirmIn 0.22s ease-out;
}

@keyframes deleteGradeConfirmIn {
    from {
        opacity: 0;
        transform: scale(0.97) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.delete-grade-confirm-modal__header {
    padding: 1.75rem 1.75rem 1.35rem;
    background: linear-gradient(
        160deg,
        rgba(239, 68, 68, 0.09) 0%,
        rgba(239, 68, 68, 0.03) 42%,
        rgba(14, 165, 233, 0.04) 100%
    );
}

[data-theme="dark"] .delete-grade-confirm-modal__header {
    background: linear-gradient(
        160deg,
        rgba(248, 113, 113, 0.14) 0%,
        rgba(248, 113, 113, 0.05) 45%,
        rgba(56, 189, 248, 0.06) 100%
    );
}

.delete-grade-confirm-modal__icon {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    box-shadow: 0 6px 22px rgba(239, 68, 68, 0.32);
}

.delete-grade-confirm-modal__icon i {
    font-size: 1.45rem;
    color: #fff;
}

.delete-grade-confirm-modal__lead {
    max-width: 34ch;
    margin-left: auto;
    margin-right: auto;
}

.delete-grade-confirm-modal__lead strong {
    color: var(--text-primary, #1e293b);
    font-weight: 700;
}

.delete-grade-confirm-modal .delete-grade-confirm-modal__body {
    padding: 1.35rem 1.75rem 1.15rem;
    gap: 1rem;
    max-height: none;
}

.delete-grade-confirm-modal__panel {
    margin: 0;
    padding: 1rem 1rem 1.05rem 1.1rem;
    border-radius: 12px;
    background: var(--bg-tertiary, #f8fafc);
    border: 1px solid var(--border-color, #e2e8f0);
    border-left: 4px solid var(--danger, #ef4444);
}

[data-theme="dark"] .delete-grade-confirm-modal__panel {
    background: rgba(15, 23, 42, 0.55);
    border-color: var(--border-color);
}

.delete-grade-confirm-modal__panel-title {
    margin: 0 0 0.7rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--danger, #ef4444);
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.delete-grade-confirm-modal__panel-title i {
    font-size: 0.95rem;
    opacity: 0.95;
}

.delete-grade-confirm-modal__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.delete-grade-confirm-modal__list li {
    position: relative;
    padding-left: 1.2rem;
    font-size: 0.875rem;
    line-height: 1.45;
    color: var(--text-secondary, #64748b);
}

.delete-grade-confirm-modal__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.52rem;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--danger, #ef4444);
    opacity: 0.65;
}

.delete-grade-confirm-modal__note {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.45;
    color: var(--text-muted, #94a3b8);
    text-align: center;
    padding-top: 0.35rem;
    border-top: 1px dashed var(--border-color, #e2e8f0);
}

.delete-grade-confirm-modal__actions {
    padding: 1.2rem 1.75rem 1.35rem;
}

.grades-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: 1.25rem;
}

/* Tarjeta de grado — estilo moderno */
.grade-card {
    background: var(--bg-secondary, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.grade-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: rgba(14, 165, 233, 0.25);
}

[data-theme="dark"] .grade-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .grade-card:hover {
    border-color: rgba(56, 189, 248, 0.35);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.grade-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 1.25rem 1.25rem 1rem;
    background: linear-gradient(180deg, rgba(14, 165, 233, 0.04) 0%, transparent 100%);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

[data-theme="dark"] .grade-card-header {
    background: linear-gradient(180deg, rgba(56, 189, 248, 0.06) 0%, transparent 100%);
    border-bottom-color: var(--border-color);
}

.grade-card-title-block {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.grade-name {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.01em;
}

.grade-name i {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 165, 233, 0.12);
    color: var(--primary, #0ea5e9);
    border-radius: 10px;
    font-size: 0.9rem;
}

[data-theme="dark"] .grade-name i {
    background: rgba(56, 189, 248, 0.2);
    color: var(--primary);
}

.grade-card-school {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8125rem;
    color: var(--text-secondary, #64748b);
    font-weight: 500;
    margin-left: 42px;
}

.grade-card-school i {
    color: var(--primary, #0ea5e9);
    flex-shrink: 0;
    opacity: 0.9;
}

.grade-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

/* Botones solo icono: mismo tamaño, tooltip con title, aria-label para lectores de pantalla */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 10px;
    transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn-icon i {
    font-size: 0.9rem;
}

.btn-icon:active {
    transform: scale(0.95);
}

.grade-card-actions .btn-add-section {
    background: var(--bg-tertiary, #f1f5f9);
    color: var(--text-primary, #1e293b);
    border: 1px solid var(--border-color, #e2e8f0);
}

.grade-card-actions .btn-add-section:hover {
    background: #0ea5e9;
    color: #ffffff;
    border-color: #0ea5e9;
}

[data-theme="dark"] .grade-card-actions .btn-add-section:hover {
    background: #38bdf8;
    color: #0f172a;
    border-color: #38bdf8;
}

.grade-card-actions .btn-delete-grade {
    color: var(--danger, #ef4444) !important;
    background: transparent;
    border: 1px solid transparent;
}

.grade-card-actions .btn-delete-grade:hover {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.3);
}

.grade-block {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 1rem 1.25rem 1.25rem;
}

.grade-block-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted, #94a3b8);
    margin: 0 0 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.grade-block-title i {
    color: var(--primary, #0ea5e9);
    font-size: 0.75rem;
}

.grade-sections-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 280px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
}

.grade-sections-list::-webkit-scrollbar {
    width: 6px;
}

.grade-sections-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary, #f1f5f9);
    border-radius: 3px;
}

.grade-sections-list::-webkit-scrollbar-thumb {
    background: var(--border-color, #cbd5e1);
    border-radius: 3px;
}

.grade-materias-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.grade-materias-loading {
    padding: 0.5rem 0;
    color: var(--text-secondary, #64748b);
    font-size: 0.9rem;
}

.subject-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.subject-row .btn-remove-subject {
    margin-left: auto;
}

.grade-loading {
    padding: 0.5rem 0;
    color: var(--text-secondary, #64748b);
    font-size: 0.9rem;
}

.section-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary, #f8fafc);
    border-radius: 10px;
    border: 1px solid var(--border-color, #e2e8f0);
    margin-bottom: 0.5rem;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.section-row:hover {
    background: var(--bg-tertiary);
    border-color: rgba(14, 165, 233, 0.2);
}

[data-theme="dark"] .section-row {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .section-row:hover {
    border-color: rgba(56, 189, 248, 0.25);
}

.section-header {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.section-header-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: auto;
}

.section-label {
    font-weight: 600;
    min-width: 4rem;
    font-size: 0.9375rem;
    color: var(--text-primary, #1e293b);
}

.section-stats {
    font-size: 0.8125rem;
    color: var(--text-secondary, #64748b);
}

.section-subjects-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.5rem;
    padding-left: 1rem;
    border-left: 3px solid var(--primary, #0ea5e9);
    border-radius: 0 2px 2px 0;
}

.section-subjects-loading {
    padding: 0.5rem 0;
    color: var(--text-secondary, #64748b);
    font-size: 0.85rem;
}

.subject-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.4rem 0.6rem;
    background: var(--bg-secondary, #fff);
    border-radius: 0.375rem;
    border: 1px solid var(--border-color, #e2e8f0);
}

[data-theme="dark"] .subject-item {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.subject-name {
    font-size: 0.9rem;
    color: var(--text-primary, #1e293b);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex: 1;
    min-width: 0;
}

.subject-name i {
    color: var(--primary, #0ea5e9);
    font-size: 0.85rem;
}

.subject-item-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
}

.btn-subject-catalog-map {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.65rem;
    height: 1.65rem;
    padding: 0 0.35rem;
    border-radius: 999px;
    border: none;
    background: #ffedd5;
    color: #ea580c;
    font-weight: 800;
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 0 0 1px rgba(234, 88, 12, 0.35);
}

.btn-subject-catalog-map:hover {
    background: #fed7aa;
}

.btn-subject-catalog-map:focus-visible {
    outline: 2px solid #ea580c;
    outline-offset: 2px;
}

[data-theme="dark"] .btn-subject-catalog-map {
    background: rgba(234, 88, 12, 0.2);
    color: #fb923c;
    box-shadow: 0 0 0 1px rgba(251, 146, 60, 0.4);
}

.btn-remove-subject-section {
    margin-left: 0;
    color: var(--text-muted, #94a3b8);
    padding: 0.2rem 0.4rem;
}

.btn-remove-subject-section:hover {
    color: var(--danger, #ef4444);
}

.btn-add-subject-section {
    margin-left: auto;
    min-width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 8px;
    background: var(--primary, #0ea5e9);
    color: #fff;
    border: 1px solid var(--primary);
}

.btn-add-subject-section:hover {
    filter: brightness(1.1);
}

.no-subjects {
    padding: 0.5rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary, #64748b);
    font-style: italic;
}

.badge-defined {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    background: rgba(14, 165, 233, 0.12);
    color: var(--primary, #0ea5e9);
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.btn-remove-define {
    color: var(--text-muted, #94a3b8);
    background: transparent;
    border: 1px solid transparent;
}

.btn-remove-define:hover {
    color: var(--danger, #ef4444);
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.25);
}

.loading-msg,
.empty-msg {
    color: var(--text-secondary, #64748b);
    padding: 1.5rem;
    text-align: center;
}

.error-msg {
    color: var(--danger, #ef4444);
}

.no-sections {
    padding: 1.25rem 1rem;
    color: var(--text-muted, #94a3b8);
    font-size: 0.9rem;
    text-align: center;
    background: var(--bg-tertiary, #f8fafc);
    border-radius: 10px;
    border: 1px dashed var(--border-color, #e2e8f0);
    line-height: 1.5;
}

.no-sections::before {
    content: '\f5fd';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    display: block;
    font-size: 1.5rem;
    color: var(--primary, #0ea5e9);
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.875rem;
}

.btn-ghost {
    background: transparent;
    border: none;
}

.context-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary, #64748b);
}

.context-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.context-item .label {
    font-weight: 500;
}

.context-select {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 6px;
    background: var(--bg-primary, #f8fafc);
    color: var(--text-primary, #1e293b);
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    max-width: 280px;
}
.context-select:focus {
    outline: none;
    border-color: var(--primary, #0ea5e9);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.15);
}
.context-select-sm {
    max-width: 140px;
    min-width: 70px;
}
[data-theme="dark"] .context-select {
    background: var(--bg-tertiary, #334155);
    border-color: var(--border-color, #475569);
    color: var(--text-primary, #f8fafc);
}

.btn-apply-period {
    padding: 0.3rem 0.75rem;
    border: none;
    border-radius: 6px;
    background: linear-gradient(135deg, #10b981, #047857);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: filter 0.15s, transform 0.1s;
}
.btn-apply-period:hover {
    filter: brightness(1.1);
}
.btn-apply-period:active {
    transform: scale(0.97);
}
.btn-apply-period.changed {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}
.btn-apply-period.success {
    background: linear-gradient(135deg, #10b981, #047857);
}
.btn-apply-period.error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}
.btn-apply-period:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========== Responsive: aprovechar pantalla y adaptar a móvil ========== */
@media (min-width: 769px) {
    .secciones-main .header-content {
        flex-wrap: nowrap;
    }
    .secciones-main .grade-card-header {
        flex-wrap: nowrap;
    }
}

/* Tablets y pantallas medianas */
@media (max-width: 1024px) {
    .grade-card-header {
        flex-wrap: wrap;
    }
    .grade-card-actions {
        width: 100%;
        justify-content: flex-start;
    }
    .grade-card-actions .btn {
        flex: 1;
        min-width: 150px;
    }
}

/* Móviles */
@media (max-width: 768px) {
    .secciones-main.main-content {
        padding: 0.75rem 1rem;
    }
    .secciones-main .module-header {
        padding: 1rem;
    }
    .secciones-main .header-info {
        flex-wrap: wrap;
    }
    .secciones-main .module-title {
        font-size: 1.25rem;
    }
    .secciones-main .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    .secciones-main .header-actions {
        width: 100%;
    }
    .secciones-main .header-actions .btn {
        flex: 1;
        min-width: 0;
        font-size: 0.8125rem;
        padding: 0.4rem 0.625rem;
    }
    
    /* Grade cards */
    .grade-card {
        border-radius: 14px;
    }
    .grade-card-header {
        padding: 1rem 1rem 0.875rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    .grade-card-school {
        margin-left: 0;
    }
    .grade-card-title-block {
        width: 100%;
    }
    .grade-name {
        font-size: 1.05rem;
    }
    .grade-name i {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }
    .grade-block {
        padding: 0.875rem 1rem 1rem;
    }
    .grade-card-actions {
        width: 100%;
        flex-direction: row;
        justify-content: flex-start;
        gap: 0.5rem;
    }
    
    /* Section rows */
    .section-row {
        padding: 0.625rem;
        border-radius: 8px;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .section-label {
        min-width: auto;
        width: 100%;
    }
    .section-stats {
        width: 100%;
        font-size: 0.8rem;
    }
    .btn-add-subject-section {
        margin-left: auto;
    }
    .section-subjects-list {
        padding-left: 0.75rem;
        margin-top: 0.75rem;
    }
    
    /* Subject items */
    .subject-item {
        flex-wrap: wrap;
        padding: 0.5rem;
    }
    .subject-name {
        flex: 1;
        min-width: 0;
    }
    .btn-remove-subject-section {
        margin-left: 0;
        align-self: flex-end;
    }
    
    /* Modals */
    .secciones-modal {
        padding: 0.5rem;
    }
    .secciones-modal-box {
        margin: 0;
        max-width: 100%;
        border-radius: 12px;
        max-height: calc(100vh - 1rem);
        display: flex;
        flex-direction: column;
    }
    .secciones-modal-header {
        padding: 1.5rem 1.25rem 1.25rem 1.25rem;
    }
    .secciones-modal-icon-wrapper {
        width: 56px;
        height: 56px;
        margin-bottom: 0.75rem;
    }
    .secciones-modal-icon-wrapper i {
        font-size: 1.5rem;
    }
    .secciones-modal-title {
        font-size: 1.25rem;
    }
    .secciones-modal-subtitle {
        font-size: 0.875rem;
    }
    .secciones-modal-body {
        padding: 1.25rem 1.25rem;
        gap: 1.25rem;
        overflow-y: auto;
        flex: 1;
    }
    .secciones-modal-actions {
        padding: 1rem 1.25rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    .secciones-modal-actions .btn {
        width: 100%;
        min-width: 0;
    }
    .secciones-form-hint {
        padding-left: 0;
        font-size: 0.75rem;
    }
    
    /* Botones generales */
    .secciones-main .btn,
    .secciones-modal .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
    .btn-sm {
        padding: 0.4rem 0.6rem;
        font-size: 0.8125rem;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {
    .secciones-main.main-content {
        padding: 0.5rem 0.75rem;
    }
    .secciones-main .module-header {
        padding: 0.875rem;
    }
    .secciones-main .module-title {
        font-size: 1.1rem;
    }
    .grade-card {
        padding: 0.75rem;
    }
    .section-row {
        padding: 0.5rem;
    }
    .secciones-modal-header {
        padding: 1.25rem 1rem 1rem 1rem;
    }
    .secciones-modal-body {
        padding: 1rem;
        gap: 1rem;
    }
    .secciones-modal-actions {
        padding: 1rem;
    }
    .secciones-main .btn,
    .secciones-modal .btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }
}

/* Pantallas grandes: listado de grados en grid opcional (2 columnas si hay espacio) */
@media (min-width: 1200px) {
    .grades-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
        gap: 1rem;
    }
}

/* ── Móvil: permitir scroll de la página ── */
@media (max-width: 768px) {
    body:has(.app-container:has(.dashboard-layout)) {
        overflow-x: hidden !important;
        -webkit-overflow-scrolling: touch;
    }
    .app-container:has(.dashboard-layout) {
        min-height: 100vh;
        min-height: 100dvh;
        height: 100vh;
        height: 100dvh;
    }
    .app-container:has(.dashboard-layout) .dashboard-layout { min-height: 0; }
    .app-container:has(.dashboard-layout) .dashboard-main { overflow-x: hidden; overflow-y: auto; }
    .app-container:has(.dashboard-layout) #dashboard-footer-placeholder {
        flex-shrink: 0;
        margin-top: auto;
    }
    .main-content { padding-bottom: 2rem; }
}

/* Refuerzo escritorio: misma cadena flex que planeamiento (footer al fondo del área scroll) */
.app-container:has(.dashboard-layout) {
    min-height: 100vh;
    min-height: 100dvh;
    height: 100vh;
    height: 100dvh;
}
.app-container:has(.dashboard-layout) #dashboard-footer-placeholder {
    flex-shrink: 0;
    margin-top: auto;
}