/* Sriyani Private Document Management System - Modern UI Styles */
:root {
    --primary-color: #1e3a8a;
    --primary-hover: #172554;
    --secondary-color: #0f766e;
    --dark-bg: #0f172a;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #2563eb;
    --card-border: #e2e8f0;
    --text-primary: #1e293b;
    --text-muted: #64748b;
    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    font-family: var(--font-sans);
    background-color: #f8fafc;
    color: var(--text-primary);
    min-height: 100vh;
}

/* Layout */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: #f1f5f9;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    transition: all 0.2s ease-in-out;
}

.sidebar .brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.sidebar .brand .logo-icon {
    font-size: 1.5rem;
}

.sidebar-nav {
    padding: 1rem 0;
    flex-grow: 1;
}

.sidebar-nav .nav-heading {
    padding: 0.5rem 1.5rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1.5rem;
    color: #cbd5e1;
    font-weight: 500;
    font-size: 0.92rem;
    text-decoration: none;
    transition: all 0.15s ease-in-out;
}

.sidebar-nav .nav-link:hover {
    color: #ffffff;
    background-color: var(--sidebar-hover);
}

.sidebar-nav .nav-link.active {
    color: #ffffff;
    background-color: var(--sidebar-active);
    font-weight: 600;
}

.sidebar-nav .nav-link .badge {
    margin-left: auto;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Top Navbar */
.top-navbar {
    background-color: #ffffff;
    border-bottom: 1px solid var(--card-border);
    padding: 0.85rem 1.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.content-body {
    padding: 1.75rem;
    flex-grow: 1;
}

/* Cards & Stats */
.card {
    border: 1px solid var(--card-border);
    border-radius: 0.6rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

.card-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--card-border);
    font-weight: 600;
    padding: 0.85rem 1.25rem;
}

.stat-card {
    border-radius: 0.6rem;
    padding: 1.25rem;
    background-color: #ffffff;
    border: 1px solid var(--card-border);
    transition: transform 0.15s ease-in-out;
}

.stat-card:hover {
    transform: translateY(-2px);
}

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

.stat-card .stat-label {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-muted);
}

/* Location Breadcrumb Badge */
.location-path {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background-color: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: 0.375rem;
    padding: 0.3rem 0.6rem;
    font-family: monospace;
    font-size: 0.85rem;
    color: #334155;
}

.location-path .arrow {
    color: #94a3b8;
    font-weight: bold;
}

/* Document Status Indicators */
.badge-doc-available {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.badge-doc-pin {
    background-color: #fef9c3;
    color: #854d0e;
    border: 1px solid #fde047;
}

.badge-doc-locked {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Tables */
.table th {
    background-color: #f8fafc;
    color: #475569;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 2px solid var(--card-border);
}

.table td {
    vertical-align: middle;
    font-size: 0.92rem;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* Responsive Mobile Navigation */
@media (max-width: 991.98px) {
    .app-wrapper {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        position: static;
    }
    .sidebar.collapsed {
        display: none;
    }
    .content-body {
        padding: 1rem;
    }
    .top-navbar {
        padding: 0.75rem 1rem;
    }
}