:root {
    --spc-primary: #1e3a8a;
    --spc-primary-light: #3b82f6;
    --spc-accent: #0ea5e9;
    --spc-bg: #f8fafc;
    --spc-card-bg: #ffffff;
    --spc-text: #1e293b;
    --spc-text-muted: #64748b;
    --spc-border: #e2e8f0;
    --spc-success: #10b981;
    --spc-warning: #f59e0b;
    --spc-danger: #ef4444;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background-color: var(--spc-bg);
    color: var(--spc-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.spc-navbar {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 0.75rem 1.5rem;
}

.spc-brand {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
    color: #ffffff !important;
    display: flex;
    align-items: center;
    gap: 8px;
}

.spc-brand .badge-tag {
    font-size: 0.65rem;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #0f172a;
    font-weight: 800;
    padding: 3px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

/* Cards & Stats */
.spc-card {
    background-color: var(--spc-card-bg);
    border: 1px solid var(--spc-border);
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.spc-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
}

.kpi-card {
    padding: 1.25rem;
    position: relative;
    overflow: hidden;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--spc-text);
    line-height: 1.2;
}

.kpi-label {
    font-size: 0.825rem;
    color: var(--spc-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Tablas */
.spc-table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
}

.spc-table thead th {
    background-color: #f1f5f9;
    color: #475569;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 14px;
    border-bottom: 2px solid var(--spc-border);
}

.spc-table tbody td {
    padding: 12px 14px;
    vertical-align: middle;
    border-bottom: 1px solid var(--spc-border);
    font-size: 0.9rem;
}

.spc-table tbody tr:hover {
    background-color: #f8fafc;
}

/* Badges de Rentabilidad */
.badge-margen-alto {
    background-color: #d1fae5;
    color: #065f46;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

.badge-margen-medio {
    background-color: #fef3c7;
    color: #92400e;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

.badge-margen-bajo {
    background-color: #fee2e2;
    color: #991b1b;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

/* Login */
.login-card {
    max-width: 440px;
    margin: 60px auto;
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    background: #ffffff;
    border: 1px solid #e2e8f0;
}