* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f3f6fb;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --surface-muted: #f1f5f9;
    --surface-dark: #111827;
    --text: #1f2937;
    --text-soft: #6b7280;
    --text-strong: #0f172a;
    --border: #e5e7eb;
    --border-strong: #d1d5db;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --secondary-hover: #475569;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --success-bg: #dcfce7;
    --success-text: #166534;
    --success-border: #bbf7d0;
    --warning-bg: #fef3c7;
    --warning-text: #92400e;
    --warning-border: #fde68a;
    --error-bg: #fee2e2;
    --error-text: #991b1b;
    --error-border: #fecaca;
    --info-bg: #dbeafe;
    --info-text: #1e40af;
    --info-border: #bfdbfe;
    --shadow-xs: 0 1px 3px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 18px 45px rgba(15, 23, 42, 0.10);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --container-width: 1440px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 28%),
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.06), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* CONTENEDOR PRINCIPAL */

main {
    max-width: var(--container-width);
    margin: 36px auto;
    padding: 36px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(229, 231, 235, 0.9);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(4px);
}

/* HEADER */

header {
    background: linear-gradient(135deg, #0f172a 0%, #1f2937 55%, #1e3a8a 100%);
    color: white;
    padding: 30px 24px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
}

header h1 {
    margin-bottom: 8px;
    font-size: 32px;
    letter-spacing: -0.03em;
}

header p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
}

/* FOOTER */

footer {
    text-align: center;
    padding: 24px 16px 30px;
    color: var(--text-soft);
    font-size: 14px;
}

/* TITULOS Y TEXTO */

h1,
h2,
h3,
h4 {
    color: var(--text-strong);
    line-height: 1.2;
}

h2 {
    margin-bottom: 20px;
    font-size: 28px;
    letter-spacing: -0.02em;
}

h3 {
    margin-bottom: 14px;
    font-size: 20px;
}

p {
    margin-bottom: 14px;
    color: var(--text);
}

small {
    color: var(--text-soft);
}

hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
    margin: 28px 0;
}

a {
    color: var(--primary);
}

a:hover {
    color: var(--primary-hover);
}

/* BOTONES */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    color: white;
    padding: 11px 18px;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 14px;
    margin-bottom: 15px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.button:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #2563eb 100%);
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
}

.button:active {
    transform: translateY(0);
}

.button.button-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, #94a3b8 100%);
    box-shadow: 0 8px 18px rgba(100, 116, 139, 0.16);
}

.button.button-secondary:hover {
    background: linear-gradient(135deg, var(--secondary-hover) 0%, #64748b 100%);
    box-shadow: 0 12px 24px rgba(71, 85, 105, 0.22);
}

.button.button-warning {
    background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    box-shadow: 0 8px 18px rgba(217, 119, 6, 0.16);
}

.button.button-warning:hover {
    background: linear-gradient(135deg, #b45309 0%, #d97706 100%);
    box-shadow: 0 12px 24px rgba(180, 83, 9, 0.22);
}

.button-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    background: linear-gradient(135deg, var(--danger) 0%, #ef4444 100%);
    color: white;
    padding: 11px 18px;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 14px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    box-shadow: 0 8px 18px rgba(220, 38, 38, 0.18);
}

.button-danger:hover {
    background: linear-gradient(135deg, var(--danger-hover) 0%, #dc2626 100%);
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(185, 28, 28, 0.22);
}

/* ENLACES DE ACCIÓN */

.action-link {
    text-decoration: none;
    font-weight: bold;
    color: var(--primary);
    transition: color 0.18s ease;
}

.action-link:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

.action-link-danger {
    text-decoration: none;
    font-weight: bold;
    color: var(--danger);
    transition: color 0.18s ease;
}

.action-link-danger:hover {
    text-decoration: underline;
    color: var(--danger-hover);
}

/* BLOQUES DE ACCIONES */

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

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

/* ACCIONES SUTILES SOLO DENTRO DE TABLAS/LISTADOS */

.inline-actions .action-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0;
    min-height: auto;
    background: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.4;
    text-decoration: none;
    cursor: pointer;
}

.inline-actions .action-link:hover {
    text-decoration: underline;
    transform: none;
    box-shadow: none;
}

.inline-actions .action-link.button-warning {
    background: none;
    color: #b45309;
    padding: 0;
    min-height: auto;
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.inline-actions .action-link.button-warning:hover {
    background: none;
    color: #92400e;
    text-decoration: underline;
    transform: none;
    box-shadow: none;
}

.inline-actions .action-link.button-danger {
    background: none;
    color: var(--danger);
    padding: 0;
    min-height: auto;
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.inline-actions .action-link.button-danger:hover {
    background: none;
    color: var(--danger-hover);
    text-decoration: underline;
    transform: none;
    box-shadow: none;
}

/* FORMULARIOS */

.form {
    width: 100%;
    max-width: 100%;
    padding: 28px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-weight: bold;
    color: var(--text-strong);
}

.form-group input,
.form-group select,
.form-group textarea,
.form input[type="text"],
.form input[type="email"],
.form input[type="password"],
.form input[type="date"],
.form input[type="number"],
.form select,
.form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    font-size: 14px;
    background: #fff;
    color: var(--text);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.form-group textarea,
.form textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.form input[type="text"]:focus,
.form input[type="email"]:focus,
.form input[type="password"]:focus,
.form input[type="date"]:focus,
.form input[type="number"]:focus,
.form select:focus,
.form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
    background: #ffffff;
}

.form .button,
.form .button-danger,
.form button.button {
    margin-bottom: 0;
}

.form-check {
    margin-bottom: 18px;
}

.form-actions {
    margin-top: 26px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ALERTAS DEL SISTEMA */

.alert {
    padding: 14px 16px;
    border-radius: 12px;
    margin-bottom: 22px;
    font-size: 14px;
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
}

.alert-error {
    background-color: var(--error-bg);
    color: var(--error-text);
    border-color: var(--error-border);
}

.alert-success {
    background-color: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

.alert-warning {
    background-color: var(--warning-bg);
    color: var(--warning-text);
    border-color: var(--warning-border);
}

.alert-info {
    background-color: var(--info-bg);
    color: var(--info-text);
    border-color: var(--info-border);
}

.alert-danger {
    background-color: var(--error-bg);
    color: var(--error-text);
    border-color: var(--error-border);
}

/* TABLAS */

.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table th {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    text-align: left;
    padding: 14px 14px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #475569;
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: 14px;
    border-bottom: 1px solid #eef2f7;
    font-size: 14px;
    vertical-align: middle;
    background: #ffffff;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr {
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.table tbody tr:hover td {
    background-color: #f8fbff;
}

/* FILAS DESTACADAS DE EMPRESAS */

.table tbody tr.row-expiring-soon td {
    background-color: #fffbeb;
    border-top: 1px solid #fde68a;
    border-bottom: 1px solid #fde68a;
}

.table tbody tr.row-expiring-soon td:first-child {
    border-left: 4px solid #f59e0b;
}

.table tbody tr.row-expiring-soon:hover td {
    background-color: #fef3c7;
}

.table tbody tr.row-expired td {
    background-color: #fef2f2;
    border-top: 1px solid #fecaca;
    border-bottom: 1px solid #fecaca;
}

.table tbody tr.row-expired td:first-child {
    border-left: 4px solid #dc2626;
}

.table tbody tr.row-expired:hover td {
    background-color: #fee2e2;
}

/* BADGES */

.badge {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: bold;
    line-height: 1.4;
    white-space: nowrap;
    background: #e2e8f0;
    color: #334155;
    border: 1px solid #cbd5e1;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* TARJETAS Y BLOQUES VISUALES */

.card,
.panel,
.metric-card,
.info-card {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 22px;
    margin-bottom: 20px;
}

.metric-card {
    flex: 1 1 220px;
    min-width: 220px;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.10), transparent 34%),
        linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: var(--shadow-md);
}

.metric-card::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #2563eb 0%, #60a5fa 100%);
}

.metric-card h3,
.info-card h3,
.card h3,
.panel h3 {
    margin-bottom: 8px;
}

.metric-value {
    font-size: 34px;
    font-weight: bold;
    line-height: 1;
    color: var(--text-strong);
    margin-bottom: 8px;
}

.metric-label {
    font-size: 14px;
    color: var(--text-soft);
    margin-bottom: 0;
}

.card > p:last-child,
.panel > p:last-child,
.info-card > p:last-child,
.metric-card > p:last-child {
    margin-bottom: 0;
}

/* BLOQUES TIPO DASHBOARD */

.dashboard-hero {
    padding: 28px;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.14), transparent 28%),
        linear-gradient(135deg, #ffffff 0%, #f8fbff 48%, #eef4ff 100%);
    border: 1px solid #dbeafe;
    box-shadow: var(--shadow-md);
    margin-bottom: 28px;
}

.dashboard-hero h2,
.dashboard-hero h3 {
    margin-bottom: 10px;
}

.dashboard-hero p {
    max-width: 760px;
    color: #334155;
    margin-bottom: 0;
}

.section-panel {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 24px;
}

.section-panel h2,
.section-panel h3 {
    margin-bottom: 16px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.dashboard-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    margin-bottom: 24px;
}

.dashboard-toolbar .form,
.dashboard-toolbar .section-panel,
.dashboard-toolbar .card {
    margin-bottom: 0;
}

.compact-form {
    max-width: none;
    width: 100%;
    margin-bottom: 0;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

/* UTILIDADES VISUALES */

.text-muted {
    color: var(--text-soft);
}

.text-center {
    text-align: center;
}

.surface-soft {
    background: var(--surface-soft);
}

.rounded {
    border-radius: var(--radius-md);
}

.shadow-soft {
    box-shadow: var(--shadow-sm);
}

/* LISTAS */

ul,
ol {
    padding-left: 22px;
    margin-bottom: 16px;
}

li {
    margin-bottom: 8px;
}

/* RESPONSIVE */

@media (max-width: 1400px) {
    main {
        max-width: 96%;
        padding: 24px;
    }

    .table th,
    .table td {
        padding: 10px 10px;
        font-size: 13px;
    }

    .badge {
        font-size: 11px;
        padding: 4px 8px;
    }

    h2 {
        font-size: 24px;
    }

    h3 {
        font-size: 18px;
    }
}

@media (max-width: 1024px) {
    main {
        max-width: 94%;
        padding: 28px;
    }

    header {
        padding: 26px 18px;
    }

    header h1 {
        font-size: 28px;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    main {
        margin: 20px auto;
        padding: 20px;
        border-radius: 18px;
    }

    header {
        padding: 22px 16px;
    }

    header h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 24px;
    }

    .actions,
    .inline-actions,
    .form-actions,
    .dashboard-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .button,
    .button-danger {
        width: 100%;
    }

    .form {
        padding: 20px;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        border-radius: 14px;
    }

    .dashboard-hero,
    .section-panel {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    body {
        line-height: 1.5;
    }

    main {
        padding: 16px;
    }

    header h1 {
        font-size: 22px;
    }

    p,
    .table td,
    .table th,
    .form-group input,
    .form-group select,
    .form-group textarea,
    .form input[type="text"],
    .form input[type="email"],
    .form input[type="password"],
    .form input[type="date"],
    .form input[type="number"],
    .form select,
    .form textarea {
        font-size: 14px;
    }
}