:root {
    --primary: #1e3a8a;          /* Azul corporativo elegante */
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #0f766e;        /* Verde azulado */
    --accent: #f59e0b;           /* Ámbar / Alerta */
    --danger: #dc2626;           /* Rojo penalización */
    --success: #16a34a;          /* Verde stock */
    --bg-main: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* NAVBAR Y TOPBAR */
.top-navbar {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.05);
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 2px 4px rgba(30, 58, 138, 0.3);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-link-btn {
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.nav-link-btn:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.nav-link-btn.active {
    color: var(--primary);
    background-color: #dbeafe;
    font-weight: 600;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.35rem 0.75rem;
    background: #f1f5f9;
    border-radius: 20px;
    font-size: 0.825rem;
}

.sede-selector-wrapper select {
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
    font-size: 0.825rem;
    font-weight: 600;
    background-color: white;
    color: var(--primary);
    outline: none;
    cursor: pointer;
}

/* LAYOUT GENERAL */
.main-container {
    max-width: 1400px;
    margin: 1.5rem auto;
    padding: 0 1.25rem;
    width: 100%;
    flex: 1;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

/* CARDS Y CONTENEDORES */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

/* KPI CARDS */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.kpi-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.kpi-info h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.kpi-info .kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
}

.kpi-info .kpi-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.icon-blue { background-color: #dbeafe; color: #1e40af; }
.icon-green { background-color: #dcfce7; color: #15803d; }
.icon-amber { background-color: #fef3c7; color: #b45309; }
.icon-purple { background-color: #f3e8ff; color: #7e22ce; }
.icon-red { background-color: #fee2e2; color: #b91c1c; }

/* TABLAS MODERNAS */
.table-container {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table-toolbar {
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background-color: #fcfcfd;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.search-input {
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    font-size: 0.875rem;
    min-width: 280px;
    outline: none;
    transition: border-color 0.2s;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.15);
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

table.data-table th {
    background-color: #f8fafc;
    color: #475569;
    font-weight: 600;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table.data-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-main);
    vertical-align: middle;
}

table.data-table tr:hover td {
    background-color: #f8fafc;
}

/* BADGES Y ETIQUETAS */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

.badge-code {
    background-color: #e2e8f0;
    color: #1e293b;
    font-family: monospace;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
}

.badge-success { background-color: #dcfce7; color: #166534; }
.badge-warning { background-color: #fef3c7; color: #92400e; }
.badge-danger { background-color: #fee2e2; color: #991b1b; }
.badge-info { background-color: #dbeafe; color: #1e40af; }
.badge-purple { background-color: #f3e8ff; color: #6b21a8; }

/* BOTONES */
.btn {
    padding: 0.55rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.25;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 2px 4px rgba(30, 58, 138, 0.25);
}

.btn-success {
    background-color: var(--success);
    color: white;
}
.btn-success:hover {
    background-color: #15803d;
}

.btn-secondary {
    background-color: #f1f5f9;
    color: #334155;
    border: 1px solid #cbd5e1;
}
.btn-secondary:hover {
    background-color: #e2e8f0;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}
.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.775rem;
    border-radius: 6px;
}

/* FORMULARIOS Y MODALES */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-backdrop.open {
    display: flex;
}

.modal-card {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.2);
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background: #f8fafc;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.825rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.35rem;
}

.form-control {
    width: 100%;
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s;
    background: white;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.15);
}

/* CANVAS DE FIRMAS */
.signature-box {
    border: 2px dashed #94a3b8;
    background-color: #fafaf9;
    border-radius: 10px;
    position: relative;
    cursor: crosshair;
    margin-top: 0.5rem;
}

.signature-box canvas {
    width: 100%;
    height: 150px;
    display: block;
}

.signature-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.5rem;
    background: #f1f5f9;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    border-top: 1px solid #e2e8f0;
}

/* ESTILOS DE IMPRESIÓN (CARGO OFICIAL) */
@media print {
    body {
        background: white !important;
        color: black !important;
    }
    .top-navbar, .page-header, .no-print, .btn, .table-toolbar {
        display: none !important;
    }
    .main-container {
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .printable-sheet {
        display: block !important;
        width: 100% !important;
        padding: 1.5cm !important;
    }
}