/* ========================== */
/* Estilos para Apuntes */
/* ========================== */

/* Container principal */
.apuntes-container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
    min-width: 0;
    box-sizing: border-box;
}

/* Cabecera: titulo + accion principal */
.apuntes-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.apuntes-career-title {
    margin: 0;
    font-family: inherit;
    font-size: var(--heading-size);
    font-weight: 700;
    line-height: 1.15;
}

.apuntes-career-context {
    margin: 6px 0 0;
    line-height: 1.5;
    opacity: 0.85;
}

.apuntes-header .btn {
    width: 100%;
}

/* Barra de herramientas: filtro por materia + orden */
.apuntes-toolbar {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.apuntes-filter {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.apuntes-filter label {
    font-size: 0.875rem;
}

.apuntes-filter select {
    box-sizing: border-box;
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
}

.apuntes-filter select:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.sort-controls {
    display: flex;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: rgb(255 255 255 / 10%);
}

.sort-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    box-sizing: border-box;
    padding: 8px 16px;
    color: inherit;
    text-decoration: none;
    font-size: 0.95rem;
    text-align: center;
}

.sort-link + .sort-link {
    border-left: 1px solid var(--color-border);
}

.sort-link:hover {
    background: rgb(255 255 255 / 15%);
}

.sort-link.active {
    background: var(--color-surface);
    color: var(--color-primary);
    font-weight: 700;
}

.sort-link:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: -3px;
}

/* Lista de apuntes: grilla de tarjetas de alto uniforme */
.apuntes-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.apunte-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.apunte-subject {
    align-self: flex-start;
    max-width: 100%;
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.apunte-title {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.3;
    color: var(--color-text);
    overflow-wrap: anywhere;
}

.apunte-description {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.5;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.apunte-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2) var(--space-3);
    margin-top: auto;
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-surface-2);
}

.apunte-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1) var(--space-2);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.apunte-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.apunte-card .btn {
    flex: 1 1 auto;
}

/* Boton de agradecer */
.btn-thanks {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    padding: 4px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-2);
    color: var(--color-primary);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    box-sizing: border-box;
}

.btn-thanks svg {
    width: 16px;
    height: 16px;
    flex: none;
}

.btn-thanks:hover {
    background: #eadcf5;
}

.btn-thanks.thanked {
    background: #fff3cd;
    border: 1px solid #805700;
    color: #604000;
    font-weight: 700;
}

.btn-thanks.thanked svg {
    fill: currentcolor;
}

.btn-thanks[aria-busy="true"] {
    opacity: 0.7;
}

.thanks-feedback {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.thanks-feedback:empty {
    display: none;
}

.thanks-feedback[role="alert"] {
    color: var(--color-danger);
}

.apuntes-container a:focus-visible,
.apunte-card button:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

@media (min-width: 640px) {
    .apuntes-header .btn {
        width: auto;
    }

    .apuntes-toolbar {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }

    .apuntes-filter {
        flex: 0 1 340px;
    }

    .sort-controls {
        flex: 0 0 auto;
    }

    .apunte-card .btn {
        flex: 0 0 auto;
    }
}

@media (min-width: 900px) {
    .apuntes-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        grid-auto-rows: 1fr;
    }
}

/* Empty state */
.empty-state {
    margin-top: var(--space-4);
    padding: var(--space-5) var(--space-4);
    text-align: center;
    background: rgb(255 255 255 / 8%);
    border: 1px solid rgb(255 255 255 / 10%);
    border-radius: var(--radius-lg);
}

.empty-state-icon {
    margin: 0 auto var(--space-3);
    color: rgb(255 255 255 / 60%);
}

.empty-state-icon svg {
    width: 40px;
    height: 40px;
}

.empty-state-title {
    margin: 0 0 var(--space-2);
    font-size: 1.25rem;
    font-weight: 600;
}

.empty-state-description {
    max-width: 500px;
    margin: 0 auto var(--space-4);
    line-height: 1.6;
    opacity: 0.85;
}

/* Formulario de creación */
.form-container {
    max-width: 700px;
    margin: 2rem auto;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    box-sizing: border-box;
    min-width: 0;
}

.form-container .title,
.form-container .subtitle {
    color: #ffffff;
}

.apunte-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    font-size: 1.1rem;
    color: #ffffff;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 2px solid rgba(255, 255, 255, 0.3);
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 1rem;
    font-family: 'Roboto', sans-serif;
    box-sizing: border-box;
    max-width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ffd700;
    background-color: rgba(255, 255, 255, 0.15);
}

.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible,
.form-actions a:focus-visible,
.form-actions button:focus-visible,
.form-error-summary a:focus-visible {
    outline: 3px solid #ffd700;
    outline-offset: 3px;
}

.form-group [aria-invalid="true"] {
    border: 3px solid #ffb4b4;
    box-shadow: 0 0 0 2px #6b0c0c;
}

.form-group select option {
    background-color: var(--color-primary);
    color: #ffffff;
}

.form-group small,
.field-help {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.field-help,
.field-error,
.file-reselect-help {
    line-height: 1.45;
    margin: 0;
}

.field-error {
    color: #fff;
    background: rgba(105, 0, 0, 0.72);
    border-left: 4px solid #ffb4b4;
    border-radius: 4px;
    font-weight: 700;
    padding: 0.55rem 0.7rem;
}

.file-reselect-help {
    color: #fff4c2;
    font-weight: 700;
}

.form-error-summary {
    background: rgba(105, 0, 0, 0.82);
    border: 2px solid #ffb4b4;
    border-left-width: 6px;
    border-radius: var(--radius-md);
    color: #fff;
    margin: 1.25rem 0;
    padding: 1rem;
}

.form-error-summary h2 {
    color: inherit;
    font-size: 1.15rem;
    margin: 0 0 0.5rem;
}

.form-error-summary ul {
    margin: 0;
    padding-left: 1.25rem;
}

.form-error-summary a {
    color: #fff;
    text-decoration: underline;
}

.resource-group {
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 0;
    min-width: 0;
    padding: 1rem;
}

.resource-group legend {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0 0.35rem;
}

.resource-group.fieldset-invalid {
    border: 3px solid #ffb4b4;
}

.file-upload-group input[type="file"] {
    padding: 0.5rem;
    cursor: pointer;
}

.form-divider {
    text-align: center;
    position: relative;
    margin: 1rem 0;
}

.form-divider::before,
.form-divider::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.3);
}

.form-divider::before {
    left: 0;
}

.form-divider::after {
    right: 0;
}

.form-divider span {
    background-color: rgba(86, 13, 71, 0.8);
    padding: 0 1rem;
    color: rgba(255, 255, 255, 0.7);
}

.form-info {
    background-color: rgba(255, 215, 0, 0.1);
    border-left: 4px solid #ffd700;
    padding: 1rem;
    border-radius: 4px;
}

.form-info p {
    margin: 0;
    color: #ffffff;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1rem;
}

/* Sección de info en home */
/* ========================== */
/* 6. Home de Apuntes */
/* ========================== */

.apuntes-home {
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    color: #fdf9ff;
    margin: 40px auto;
    max-width: 1180px;
    padding: 32px;
    text-align: left;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.apuntes-hero {
    width: 100%;
    margin-bottom: 1.5rem;
}

.apuntes-title {
    color: #ffffff;
    margin-bottom: 0.35rem;
}

.apuntes-subtitle {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0;
}

.apuntes-home-content {
    width: 100%;
}

/* Layout wrapper for the hero cards. Using flex with wrapping prevents overlap while
   keeping cards aligned across breakpoints. */
.apuntes-cards-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 1.75rem;
    align-items: stretch;
    justify-content: center;
}

.apuntes-card {
    width: 100%;
    flex: 1 1 340px;
    min-width: 0;
    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.apuntes-card h2 {
    margin-top: 0;
    color: #ffd700;
    text-align: left;
}


.apuntes-card-description {
    margin: 0 0 1.25rem;
    color: rgba(255, 255, 255, 0.92);
}

.apuntes-navigation {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    margin: 0.75rem 0 0;
    width: 100%;
    gap: 0.75rem;
}

.apuntes-navigation a {
    max-width: 100%;
    width: 100%;
    text-align: center;
    padding: 0.9rem 1.25rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.12);
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.apuntes-navigation a:hover {
    background-color: #8c5cb4;
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(0, 0, 0, 0.22);
}

.apuntes-card-info .info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.apuntes-card-info .info-list li {
    padding: 0.65rem 0;
    font-size: 1.05rem;
    line-height: 1.6;
    color: #f7f4ff;
}

@media (max-width: 768px) {
    .apuntes-home {
        padding: 20px;
    }

    .apuntes-cards-layout {
        flex-direction: column;
    }
}

@media (max-width: 430px) {
    .form-container {
        margin: 1rem 0.6rem;
        padding: 1rem;
    }

    .form-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

/* Admin panel */
.admin-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.filter-controls {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
    text-align: center;
}

.filter-link {
    color: #ffffff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s;
}

.filter-link:hover {
    color: #ffd700;
}

.filter-link.active {
    color: #ffd700;
    font-weight: bold;
}

.admin-apuntes-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.admin-apunte-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border-left: 4px solid transparent;
}

.admin-apunte-card.status-pending {
    border-left-color: #ff9800;
}

.admin-apunte-card.status-approved {
    border-left-color: #4caf50;
}

.admin-apunte-card.status-rejected {
    border-left-color: #f44336;
}

.admin-apunte-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.apunte-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    align-items: flex-end;
}

.apunte-meta small {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-left: 0.5rem;
}

.status-badge.status-pending {
    background-color: rgba(255, 152, 0, 0.3);
    color: #ff9800;
}

.status-badge.status-approved {
    background-color: rgba(76, 175, 80, 0.3);
    color: #4caf50;
}

.status-badge.status-rejected {
    background-color: rgba(244, 67, 54, 0.3);
    color: #f44336;
}

.admin-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

/* Variantes de moderacion (admin): mismo boton, solo cambia el color del borde y el texto */
.btn-success {
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-success:hover {
    background-color: #eaf6ec;
}

.btn-warning {
    border-color: #8a5300;
    color: #8a5300;
}

.btn-warning:hover {
    background-color: #fff4e0;
}

/* Responsive */
@media (max-width: 768px) {
    .apuntes-header {
        flex-direction: column;
        align-items: stretch;
    }

    .form-actions {
        flex-direction: column;
    }

    .admin-apunte-header {
        flex-direction: column;
    }

    .apunte-meta {
        align-items: flex-start;
    }

    .admin-actions {
        flex-direction: column;
    }

    .admin-actions .btn {
        box-sizing: border-box;
        min-height: 44px;
        width: 100%;
        text-align: center;
    }

    .filter-controls {
        display: flex;
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .filter-link {
        align-items: center;
        display: inline-flex;
        min-height: 44px;
        padding: 0 0.35rem;
    }
}
/* Iteración 3: lectura primero, recursos y agradecimientos próximos. */
.apuntes-container { max-width: 960px; padding: 0; margin: 24px auto; }
.form-container { background: #fff; color: var(--text-color); padding: 24px; box-shadow: var(--panel-shadow); backdrop-filter: none; }
.form-container .title, .form-container .subtitle, .form-group label, .resource-group legend { color: var(--text-color); }
.form-group label { font-size: 16px; font-weight: 700; }
.form-group input, .form-group select, .form-group textarea { background: #fff; color: var(--text-color); border-color: #ad86b6; min-height: 44px; width: 100%; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { background: #fff; border-color: var(--color-primary); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted-color); }
.form-group select option { background: #fff; color: var(--text-color); }
.form-group small, .field-help { color: var(--muted-color); font-size: 14px; }
.resource-group { border-color: #ad86b6; padding: 16px; }
.file-reselect-help { color: #805700; }
.form-error-summary a { min-height: 44px; display: inline-flex; align-items: center; }
.form-group input[type=file]::file-selector-button { min-height: 44px; }
@media (max-width: 430px) { .form-container { margin: 20px 0; padding: 16px; } }
.form-divider { margin: 4px 0; }
.form-divider span { background: #fff; color: var(--muted-color); }
.form-divider::before, .form-divider::after { background: #ad86b6; }
.form-group input[type=file] { white-space: normal; }
.form-group input[type=file]::file-selector-button { display: block; max-width: 100%; margin-bottom: 8px; }