:root {
    --admin-bg: #eef4ff;
    --admin-surface: rgba(255, 255, 255, 0.92);
    --admin-surface-strong: #ffffff;
    --admin-border: rgba(15, 23, 42, 0.08);
    --admin-shadow: 0 22px 45px rgba(15, 23, 42, 0.12);
    --admin-shadow-soft: 0 12px 28px rgba(15, 23, 42, 0.08);
    --admin-text: #0f172a;
    --admin-muted: #64748b;
    --admin-danger: #dc2626;
    --admin-danger-soft: #fee2e2;
    --admin-success: #15803d;
    --admin-success-soft: #dcfce7;
}

body.admin-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(0, 168, 232, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(0, 52, 89, 0.15), transparent 32%),
        linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
    color: var(--admin-text);
}

.admin-shell {
    max-width: 1320px;
    margin: 0 auto;
    padding: 32px 20px 48px;
}

.admin-topbar,
.admin-hero,
.admin-panel {
    background: var(--admin-surface);
    border: 1px solid var(--admin-border);
    box-shadow: var(--admin-shadow-soft);
    /* Optimizacion: backdrop-filter es costoso de GPU.
       Se remplazo por un fondo solido semitransparente para mejorar rendimiento */
    /* backdrop-filter: blur(18px); */
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 24px;
    border-radius: 24px;
    margin-bottom: 24px;
}

.admin-topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.admin-mini-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(0, 52, 89, 0.08);
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 700;
}

.admin-link-btn {
    border-color: rgba(0, 52, 89, 0.14);
    color: var(--secondary-color);
    background: #fff;
}

.admin-link-btn:hover {
    color: #fff;
}

.admin-hero {
    border-radius: 32px;
    padding: 34px;
    margin-bottom: 28px;
    overflow: hidden;
}

.admin-hero-content {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.9fr);
    gap: 24px;
    align-items: start;
}

.admin-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
    background: rgba(0, 168, 232, 0.12);
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.admin-hero-title {
    font-size: clamp(2rem, 4vw, 3.35rem);
    line-height: 1.05;
    margin-bottom: 14px;
    color: var(--secondary-color);
}

.admin-hero-text {
    max-width: 720px;
    font-size: 1rem;
    color: var(--admin-muted);
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.admin-stat-card {
    padding: 18px;
    border-radius: 22px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid rgba(0, 52, 89, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.admin-stat-label {
    display: block;
    color: var(--admin-muted);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.admin-stat-value {
    display: block;
    color: var(--admin-text);
    font-size: 2rem;
    line-height: 1;
    font-weight: 800;
    margin-bottom: 8px;
}

.admin-stat-foot {
    display: block;
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.admin-grid {
    display: grid;
    grid-template-columns: minmax(360px, 0.95fr) minmax(0, 1.2fr);
    gap: 24px;
    align-items: start;
}

.admin-panel {
    border-radius: 28px;
    padding: 28px;
    content-visibility: auto;
    contain-intrinsic-size: 600px;
    /* Aislamiento de renderizado para evitar recalculos en otros elementos */
    contain: layout style paint;
}

.panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
}

.panel-title {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--secondary-color);
    font-size: 1.45rem;
}

.panel-subtitle {
    margin-top: 8px;
    color: var(--admin-muted);
    font-size: 0.95rem;
}

.form-mode-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 116px;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    background: rgba(0, 168, 232, 0.12);
    color: var(--secondary-color);
}

.form-mode-badge.editing {
    background: rgba(21, 128, 61, 0.12);
    color: var(--admin-success);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.control {
    width: 100%;
    min-height: 50px;
    padding: 13px 15px;
    border-radius: 16px;
    border: 1px solid rgba(100, 116, 139, 0.22);
    background: rgba(255, 255, 255, 0.95);
    color: var(--admin-text);
    font: inherit;
    transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.control:focus {
    outline: none;
    border-color: rgba(0, 168, 232, 0.65);
    box-shadow: 0 0 0 4px rgba(0, 168, 232, 0.14);
    transform: translateY(-1px);
}

textarea.control {
    min-height: 180px;
    resize: vertical;
}

.field-help {
    font-size: 0.8rem;
    color: var(--admin-muted);
}

.file-upload-wrapper {
    position: relative;
    border: 2px dashed rgba(0, 168, 232, 0.24);
    border-radius: 24px;
    padding: 28px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 168, 232, 0.05), rgba(255, 255, 255, 0.85));
    transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.file-upload-wrapper:hover {
    border-color: rgba(0, 168, 232, 0.5);
    background: linear-gradient(180deg, rgba(0, 168, 232, 0.08), #ffffff);
    transform: translateY(-1px);
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    width: 62px;
    height: 62px;
    border-radius: 20px;
    margin: 0 auto 14px;
    display: grid;
    place-items: center;
    background: rgba(0, 52, 89, 0.08);
    color: var(--secondary-color);
    font-size: 1.4rem;
}

.upload-title {
    display: block;
    font-weight: 700;
    color: var(--secondary-color);
}

.upload-text {
    display: block;
    margin-top: 6px;
    color: var(--admin-muted);
    font-size: 0.9rem;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.preview-item {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    min-height: 122px;
    background: #dbeafe;
    box-shadow: var(--admin-shadow-soft);
}

.preview-img-item {
    width: 100%;
    height: 122px;
    object-fit: cover;
    display: block;
}

.preview-label {
    position: absolute;
    left: 10px;
    bottom: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.74);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
}

.btn-remove-preview {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.78);
    color: #fff;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.btn-remove-preview:hover {
    background: var(--admin-danger);
    transform: scale(1.05);
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.btn {
    border-radius: 16px;
}

.btn-secondary-admin {
    border: 1px solid rgba(0, 52, 89, 0.16);
    background: #fff;
    color: var(--secondary-color);
}

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

.status-msg {
    display: none;
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    font-size: 0.92rem;
    font-weight: 600;
}

.status-msg.show {
    display: block;
}

.status-msg.info {
    background: rgba(0, 168, 232, 0.12);
    color: var(--secondary-color);
}

.status-msg.success {
    background: var(--admin-success-soft);
    color: var(--admin-success);
}

.status-msg.error {
    background: var(--admin-danger-soft);
    color: var(--admin-danger);
}

.toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 14px;
    margin-bottom: 18px;
}

.search-control {
    position: relative;
}

.search-control i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-muted);
}

.search-control .control {
    padding-left: 44px;
}

.filter-chip-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.filter-chip {
    border: 1px solid rgba(0, 52, 89, 0.12);
    background: #fff;
    color: var(--secondary-color);
    padding: 9px 14px;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    transition: var(--transition);
}

.filter-chip:hover,
.filter-chip.active {
    background: var(--secondary-color);
    color: #fff;
    border-color: var(--secondary-color);
    transform: translateY(-1px);
}

.news-manage-list {
    display: grid;
    gap: 16px;
}

.news-manage-item {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    padding: 18px;
    border-radius: 24px;
    border: 1px solid rgba(0, 52, 89, 0.08);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 255, 0.96));
    box-shadow: var(--admin-shadow-soft);
    content-visibility: auto;
    contain-intrinsic-size: 260px;
    /* Aislamiento de renderizado para mejorar performance en listas largas */
    contain: layout style paint;
}

.news-manage-thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(180deg, #e2e8f0, #cbd5e1);
}

.news-manage-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.news-manage-info {
    min-width: 0;
}

.news-meta-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.news-manage-category,
.news-manage-date,
.news-manage-images {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 11px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
}

.news-manage-category {
    background: rgba(0, 168, 232, 0.12);
    color: var(--secondary-color);
}

.news-manage-date,
.news-manage-images {
    background: rgba(100, 116, 139, 0.1);
    color: var(--admin-muted);
}

.news-manage-title {
    margin: 0 0 8px;
    font-size: 1.16rem;
    color: var(--admin-text);
}

.news-manage-text {
    margin: 0;
    color: var(--admin-muted);
    line-height: 1.65;
    display: block;
    max-height: calc(1.65em * 3);
    overflow: hidden;
}

.news-manage-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.action-btn {
    border: none;
    border-radius: 14px;
    padding: 11px 14px;
    font: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.action-btn:hover {
    transform: translateY(-1px);
}

.action-btn.edit {
    background: rgba(0, 52, 89, 0.1);
    color: var(--secondary-color);
}

.action-btn.delete {
    background: var(--admin-danger-soft);
    color: var(--admin-danger);
}

.empty-state {
    padding: 38px 24px;
    border-radius: 24px;
    text-align: center;
    color: var(--admin-muted);
    border: 1px dashed rgba(100, 116, 139, 0.24);
    background: rgba(255, 255, 255, 0.72);
}

.empty-state i {
    font-size: 2rem;
    margin-bottom: 12px;
    color: rgba(0, 52, 89, 0.4);
}

.is-hidden {
    display: none !important;
}

@media (max-width: 1120px) {
    .admin-hero-content,
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 780px) {
    .admin-shell {
        padding: 18px 14px 32px;
    }

    .admin-topbar,
    .admin-panel,
    .admin-hero {
        border-radius: 22px;
        padding: 22px;
    }

    .admin-topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-stats,
    .form-grid,
    .toolbar {
        grid-template-columns: 1fr;
    }

    .news-manage-item {
        grid-template-columns: 1fr;
    }

    .news-manage-thumb {
        aspect-ratio: 16 / 9;
    }
}

/* =========================================================
   LOGIN SCREEN
   ========================================================= */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    background: url('../img/imag principal (1).webp') no-repeat center center / cover;
    position: relative;
}

.login-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 52, 89, 0.72);
    backdrop-filter: blur(4px);
}

.login-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
    border-radius: 10px;
    padding: 40px;
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo img {
    height: 60px;
    width: auto;
    margin-bottom: 16px;
    display: inline-block;
}

.login-logo h2 {
    font-size: 1.6rem;
    color: var(--secondary-color);
    margin-bottom: 6px;
}

.login-logo p {
    font-size: 0.9rem;
    color: var(--admin-muted);
}

.login-form .login-field {
    margin-bottom: 18px;
}

.login-form .login-field label {
    display: block;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.login-form .control {
    border-radius: 6px;
}

.login-error {
    margin-top: 14px;
    color: var(--admin-danger);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    min-height: 1.2em;
}

.btn.w-full {
    width: 100%;
    justify-content: center;
    border-radius: 6px;
}