/* Modern CSS variables and design tokens */
:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --font-sans: 'Roboto', 'Inter', system-ui, -apple-system, sans-serif;
    --shadow-premium: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
    --radius-lg: 16px;
    --radius-md: 8px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & layout */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg-gradient);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Header design */
header {
    width: 100%;
    padding: 2.5rem 1rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    margin-bottom: 2rem;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
}

.art-Logo-name a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    background: linear-gradient(to right, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.art-Logo-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Navigation */
nav {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto 2.5rem auto;
    padding: 0 1rem;
}

.art-nav {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    backdrop-filter: blur(5px);
    margin-bottom: 1rem;
}

.art-menu {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.art-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.art-menu a:hover, .art-menu a.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.15);
}

/* Main Form Grid Layout (Table migration) */
main {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    flex-grow: 1;
}

.portal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 3.5rem;
}

@media (max-width: 768px) {
    .portal-grid {
        grid-template-columns: 1fr;
    }
}

/* Glassmorphism Cards */
.portal-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-premium);
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.portal-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 15px 35px -5px rgba(99, 102, 241, 0.15);
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header img {
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.15));
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Input Fields styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    background: rgba(15, 23, 42, 0.7);
}

/* Captcha group (in registro2.php) */
.captcha-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.captcha-img {
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
}

/* Submit and Action Buttons */
.btn-primary {
    display: inline-block;
    width: 100%;
    padding: 0.85rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-reset {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-reset:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Form Helper Links */
.form-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-smooth);
}

.form-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Table styles inside register card */
.register-table {
    width: 100%;
    border-collapse: collapse;
}

.register-table td {
    padding: 0.5rem 0;
    vertical-align: middle;
}

.register-table td:first-child {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-right: 1rem;
}

/* Footer design */
footer {
    margin-top: auto;
    padding: 2.5rem 1rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.6);
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

footer p {
    max-width: 1200px;
    margin: 0 auto;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition-smooth);
}

footer a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* ============================================================
   Estilos de aplicación interna (migrados desde planea.php)
   ============================================================ */

/* Fijar el nav por encima de todo el contenido de la página */
nav {
    position: relative;
    z-index: 5000;
}

/* Panel contenedor de contenido premium */
.portal-card-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-premium);
    backdrop-filter: blur(12px);
    margin-top: 1.5rem;
    margin-bottom: 3.5rem;
    transition: var(--transition-smooth);
    position: relative;
    z-index: 1; /* Debe ser inferior al del nav */
}

.portal-card-wrapper:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 15px 35px -5px rgba(99, 102, 241, 0.15);
}

/* Tablas en modo oscuro — override Bootstrap 5 variables */
.table {
    --bs-table-bg: rgba(15, 23, 42, 0.5);
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: rgba(255, 255, 255, 0.08);
    --bs-table-striped-bg: rgba(255, 255, 255, 0.02);
    --bs-table-striped-color: var(--text-primary);
    --bs-table-hover-bg: rgba(255, 255, 255, 0.05);
    --bs-table-hover-color: var(--text-primary);
    color: var(--text-primary) !important;
    background: transparent !important;
}

.table th, .table td {
    border-color: rgba(255, 255, 255, 0.08) !important;
    background-color: rgba(15, 23, 42, 0.5) !important;
    color: var(--text-primary) !important;
    vertical-align: middle;
}

.table tbody tr {
    background-color: rgba(15, 23, 42, 0.5) !important;
    color: var(--text-primary) !important;
}

.table-striped tbody tr:nth-of-type(odd) > * {
    background-color: rgba(255, 255, 255, 0.03) !important;
    color: var(--text-primary) !important;
}

.table-striped tbody tr:nth-of-type(even) > * {
    background-color: rgba(15, 23, 42, 0.5) !important;
    color: var(--text-primary) !important;
}

.table-hover tbody tr:hover > * {
    background-color: rgba(99, 102, 241, 0.1) !important;
    color: var(--text-primary) !important;
}

/* Selects e inputs modo oscuro */
.form-select, .form-control {
    background-color: rgba(15, 23, 42, 0.5) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
}

.form-select:focus, .form-control:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25) !important;
    background-color: rgba(15, 23, 42, 0.7) !important;
}

/* Títulos y fuentes */
h2, h3, h4, h5, h6, label, strong {
    color: var(--text-primary) !important;
}

.border-bottom {
    border-color: rgba(255, 255, 255, 0.1) !important;
}

/* DataTables paginación */
.dataTables_wrapper .dataTables_paginate .paginate_button {
    color: var(--text-secondary) !important;
    border-radius: var(--radius-md) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    background: rgba(30, 41, 59, 0.4) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%) !important;
    color: white !important;
    border-color: transparent !important;
}

.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    color: var(--text-secondary) !important;
    margin-bottom: 1rem;
}

/* Modales */
.modal-content {
    background-color: #1e293b !important;
    border: 1px solid var(--card-border) !important;
    color: var(--text-primary) !important;
    box-shadow: var(--shadow-premium) !important;
}

.modal-header, .modal-footer {
    border-color: rgba(255, 255, 255, 0.08) !important;
}

.btn-close {
    filter: invert(1) !important;
}

/* ============================================================
   Menú desplegable (Dropdown)
   ============================================================ */
.art-menu {
    list-style: none !important;
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 1.5rem !important;
    padding: 0 !important;
    margin: 0 !important;
}

.art-menu li {
    position: relative !important;
    list-style: none !important;
}

.art-menu li ul {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.5rem 0 !important;
    min-width: 220px !important;
    list-style: none !important;
    display: none !important;
    z-index: 2000 !important;
    box-shadow: var(--shadow-premium) !important;
    margin: 0.25rem 0 0 0 !important;
}

.art-menu li:hover > ul {
    display: block !important;
    animation: fadeInMenu 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.art-menu li ul li {
    width: 100% !important;
    position: relative !important;
    list-style: none !important;
}

.art-menu li ul a {
    display: block !important;
    width: 100% !important;
    padding: 0.6rem 1.25rem !important;
    color: var(--text-secondary) !important;
    font-size: 0.9rem !important;
    font-weight: 400 !important;
    border-radius: 0 !important;
    text-align: left !important;
    background: transparent !important;
    text-decoration: none !important;
}

.art-menu li ul a:hover {
    color: var(--text-primary) !important;
    background: rgba(99, 102, 241, 0.2) !important;
    padding-left: 1.5rem !important;
}

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

/* ============================================================
   Compatibilidad modo oscuro: elementos Bootstrap heredados
   ============================================================ */

/* details/summary (diseñosGeneral, cronogramaGeneral, etc.) */
details summary {
    background: rgba(30, 41, 59, 0.7) !important;
    border-color: var(--card-border) !important;
    color: var(--text-primary) !important;
    cursor: pointer;
    border-radius: var(--radius-md);
}

details summary strong,
details summary span {
    color: var(--text-primary) !important;
}

details summary:hover {
    background: rgba(99, 102, 241, 0.15) !important;
}

details > div,
details .p-2.border.border-top-0 {
    background: rgba(15, 23, 42, 0.4) !important;
    border-color: var(--card-border) !important;
    color: var(--text-primary) !important;
}

/* Anular bg-light en modo oscuro */
.bg-light {
    background-color: rgba(30, 41, 59, 0.5) !important;
    color: var(--text-primary) !important;
}

/* Anular table-light en cabeceras de tabla */
.table-light,
thead.table-light th,
.table-light > * {
    background-color: rgba(15, 23, 42, 0.8) !important;
    color: var(--text-primary) !important;
    border-color: var(--card-border) !important;
}

/* text-muted en modo oscuro */
.text-muted {
    color: var(--text-secondary) !important;
}

/* art-PostMetadataHeader (cabecera artículos heredados) */
.art-PostMetadataHeader,
.art-PostHeader,
.art-PostHeaderIcon-wrapper {
    color: var(--text-primary) !important;
}

/* Tarjetas (cards) de Bootstrap en modo oscuro */
.card,
.card-body,
div.card,
div.card-body {
    background-color: rgba(30, 41, 59, 0.7) !important;
    border-color: var(--card-border) !important;
    color: var(--text-primary) !important;
}

/* Soporte para checklist-table (diseñosConEntidad.php y relacionados) */
.checklist-table {
    width: 100%;
    margin-bottom: 1rem;
    color: var(--text-primary) !important;
    border-collapse: collapse;
    background-color: rgba(15, 23, 42, 0.4) !important;
}

.checklist-table th,
.checklist-table td {
    padding: 0.6rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    color: var(--text-primary) !important;
    background-color: rgba(15, 23, 42, 0.4) !important;
    vertical-align: middle;
}

.checklist-table thead th {
    background-color: rgba(15, 23, 42, 0.8) !important;
    color: var(--text-primary) !important;
    font-weight: 600;
    border-bottom: 2px solid rgba(255, 255, 255, 0.12) !important;
}

.checklist-table tbody tr:hover td {
    background-color: rgba(99, 102, 241, 0.1) !important;
}