:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --soft-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --bg-light: #f8fafc;
    --card-border-radius: 1rem;
}

[data-bs-theme="dark"] {
    --glass-bg: rgba(15, 23, 42, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --bg-light: #0f172a;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: #334155;
    overflow-x: hidden;
}

/* Glassmorphism utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--soft-shadow);
}

.card {
    border: none;
    border-radius: var(--card-border-radius);
    box-shadow: var(--soft-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

/* Sidebar Styling */
#sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: sticky;
    top: 0;
    background: #fff;
    border-right: 1px solid #e2e8f0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Scrollable menu nav with thin custom scrollbar */
#sidebar nav {
    overflow-y: auto;
    overflow-x: hidden;
    flex-grow: 1;
    scrollbar-width: thin;
    scrollbar-color: rgba(99, 102, 241, 0.2) transparent;
}

#sidebar nav,
#sidebar .nav {
    flex-wrap: nowrap !important;
}

#sidebar nav::-webkit-scrollbar {
    width: 4px;
}

#sidebar nav::-webkit-scrollbar-thumb {
    background-color: rgba(99, 102, 241, 0.2);
    border-radius: 4px;
}

/* Desktop toggle state (hidden) */
@media (min-width: 992px) {
    #sidebar.hidden {
        margin-left: calc(-1 * var(--sidebar-width));
    }
}

/* Mobile viewport-filling state (100% VP width/height) */
@media (max-width: 991.98px) {
    #sidebar {
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        height: 100vh;
        z-index: 1100;
        transform: translateX(-100%);
    }
    
    #sidebar.show {
        transform: translateX(0);
    }
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.8rem 1.5rem;
    color: #64748b;
    border-radius: 0.5rem;
    margin: 0.2rem 1rem;
    transition: all 0.2s;
}

.nav-link i {
    font-size: 1.25rem;
    min-width: 2rem;
}

.nav-link:hover, .nav-link.active {
    background: #f1f5f9;
    color: #6366f1;
}

.nav-link.active {
    background: var(--primary-gradient);
    color: #fff !important;
}

/* Top Navbar */
.top-navbar {
    height: 70px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 900;
}

/* Custom Buttons */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* Kanban Board */
.kanban-container {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.kanban-column {
    min-width: 320px;
    background: #f1f5f9;
    border-radius: 1rem;
    padding: 1rem;
}

.kanban-task {
    background: #fff;
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    cursor: grab;
}

/* Floating Labels Polished */
.form-floating > label {
    color: #94a3b8;
}

.form-control:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.1);
}

/* Badges */
.badge-pill {
    padding: 0.4em 1em;
    border-radius: 50rem;
    font-weight: 600;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.timeline-dot {
    position: absolute;
    left: -2rem;
    width: 1rem;
    height: 1rem;
    background: #6366f1;
    border-radius: 50%;
    border: 3px solid #fff;
}

/* Sidebar Dropdown Styles */
.transition-transform {
    transition: transform 0.2s ease;
}

.rotate-180 {
    transform: rotate(180deg);
}

.nav-item .collapse .nav-link {
    margin: 0;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
}

.nav-item .collapse .nav-link:hover {
    background: #f8fafc;
    color: #6366f1 !important;
}

[data-bs-theme="dark"] .nav-item .collapse .nav-link:hover {
    background: #1e293b;
}

/* Global Print Styles */
@media print {
    #sidebar,
    .top-navbar,
    .d-print-none {
        display: none !important;
    }
    
    body {
        background: #fff !important;
        background-color: #fff !important;
        color: #000 !important;
    }
    
    main {
        padding: 0 !important;
    }
    
    .flex-grow-1 {
        width: 100% !important;
        min-width: 100% !important;
        background: #fff !important;
        background-color: #fff !important;
    }

    .container-fluid {
        padding: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        padding: 0 !important;
        border: none !important;
        background: transparent !important;
    }
    
    table {
        width: 100% !important;
        border-collapse: collapse !important;
    }
    
    th, td {
        padding: 8px !important;
        border-bottom: 1px solid #ddd !important;
        color: #000 !important;
    }
    
    .badge {
        border: 1px solid #ccc !important;
        background-color: transparent !important;
        color: #000 !important;
        padding: 2px 6px !important;
        font-size: 0.8rem !important;
    }
}