/**
 * ISP360 Design System
 * Network-operator brand — replaces Prodigy ENT medical teal/green palette.
 * Tenant overrides via CSS variables from tenant_themes (see layouts/theme-vars.php).
 */
:root {
    --isp-brand: #2563eb;
    --isp-brand-dark: #1d4ed8;
    --isp-brand-light: #3b82f6;
    --isp-brand-50: #eff6ff;
    --isp-brand-100: #dbeafe;

    --isp-secondary: #4f46e5;
    --isp-accent: #0ea5e9;

    --isp-success: #10b981;
    --isp-success-bg: #ecfdf5;
    --isp-warning: #f59e0b;
    --isp-warning-bg: #fffbeb;
    --isp-danger: #ef4444;
    --isp-danger-bg: #fef2f2;
    --isp-info: #06b6d4;
    --isp-info-bg: #ecfeff;

    --isp-surface: #ffffff;
    --isp-surface-2: #f8fafc;
    --isp-border: #e2e8f0;
    --isp-text-1: #0f172a;
    --isp-text-2: #475569;
    --isp-text-3: #94a3b8;

    --isp-sidebar-bg: #0f172a;
    --isp-sidebar-text: #cbd5e1;
    --isp-sidebar-active: #2563eb;

    --isp-radius-sm: 6px;
    --isp-radius-md: 10px;
    --isp-radius-lg: 14px;
    --isp-shadow-1: 0 1px 3px rgba(15, 23, 42, 0.08);
    --isp-shadow-2: 0 8px 24px rgba(15, 23, 42, 0.1);

    /* Aliases used by dashboard components */
    --brand: var(--isp-brand);
    --brand-50: var(--isp-brand-50);
    --surface: var(--isp-surface);
    --surface-2: var(--isp-surface-2);
    --border: var(--isp-border);
    --tx-1: var(--isp-text-1);
    --tx-2: var(--isp-text-2);
    --tx-3: var(--isp-text-3);
    --green: var(--isp-success);
    --green-bg: var(--isp-success-bg);
    --blue: var(--isp-brand);
    --blue-bg: var(--isp-brand-50);
    --amber: var(--isp-warning);
    --amber-bg: var(--isp-warning-bg);
    --r-sm: var(--isp-radius-sm);
    --r-md: var(--isp-radius-md);
    --r-lg: var(--isp-radius-lg);
    --sh-1: var(--isp-shadow-1);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--isp-text-1);
    background: var(--isp-surface-2);
}

/* Auth pages (login / logout) */
.auth-page-wrapper {
    background: linear-gradient(135deg, var(--isp-brand-50) 0%, #f0f9ff 50%, var(--isp-surface-2) 100%);
    min-height: 100vh;
}

.auth-card {
    border: none;
    border-radius: var(--isp-radius-lg);
    box-shadow: var(--isp-shadow-2);
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--isp-brand), var(--isp-accent));
    z-index: 1;
}

.auth-panel-left {
    background: linear-gradient(135deg, #ffffff 0%, var(--isp-brand-50) 100%) !important;
    border-right: 4px solid var(--isp-brand);
}

.btn-isp-primary {
    background: linear-gradient(135deg, var(--isp-brand) 0%, var(--isp-brand-light) 100%);
    border: none;
    border-radius: var(--isp-radius-sm);
    color: #fff;
    font-weight: 600;
    padding: 12px 24px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-isp-primary:hover {
    background: linear-gradient(135deg, var(--isp-brand-dark) 0%, var(--isp-brand) 100%);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

/* App shell */
#layout-wrapper {
    min-height: 100vh;
}

.isp-sidebar {
    width: 260px;
    background: var(--isp-sidebar-bg);
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: width 0.2s;
}

.isp-sidebar .brand {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.isp-sidebar .brand h5 {
    color: #fff;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.02em;
}

.isp-sidebar .brand small {
    color: var(--isp-sidebar-text);
    font-size: 0.7rem;
}

.isp-sidebar .nav-link {
    color: var(--isp-sidebar-text);
    padding: 0.65rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.isp-sidebar .nav-link:hover,
.isp-sidebar .nav-link.active {
    color: #fff;
    background: rgba(37, 99, 235, 0.2);
}

.isp-sidebar .nav-link.active {
    border-left: 3px solid var(--isp-sidebar-active);
}

.isp-sidebar .menu-header {
    color: #64748b;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 1rem 1.25rem 0.35rem;
}

.main-content {
    margin-left: 260px;
    min-height: 100vh;
}

.isp-topbar {
    background: var(--isp-surface);
    border-bottom: 1px solid var(--isp-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-content {
    padding: 1.5rem;
}

/* Dashboard KPI cards */
.kpi-card {
    background: var(--isp-surface);
    border: 1px solid var(--isp-border);
    border-radius: var(--isp-radius-lg);
    box-shadow: var(--isp-shadow-1);
    padding: 1.25rem;
    height: 100%;
    transition: box-shadow 0.2s, transform 0.2s;
}

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

.kpi-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--isp-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--isp-brand-50);
    color: var(--isp-brand);
}

.kpi-val {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--isp-text-1);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.kpi-lbl {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--isp-text-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.db-header {
    background: var(--isp-surface);
    border: 1px solid var(--isp-border);
    border-radius: var(--isp-radius-lg);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--isp-shadow-1);
}

.db-greet {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--isp-text-1);
    margin: 0;
}

.chart-card {
    background: var(--isp-surface);
    border: 1px solid var(--isp-border);
    border-radius: var(--isp-radius-lg);
    box-shadow: var(--isp-shadow-1);
    overflow: hidden;
    height: 100%;
}

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

.chart-body {
    padding: 1.25rem;
    position: relative;
    min-height: 280px;
}

@media (max-width: 992px) {
    .isp-sidebar {
        transform: translateX(-100%);
    }
    .main-content {
        margin-left: 0;
    }
}