@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Premium Color Palette */
    --primary-color: #0f172a;      /* Slate 900 */
    --primary-hover: #1e293b;      /* Slate 800 */
    --accent-color: #11263c;       /* Brand Primary */
    --accent-hover: #0c1a29;       /* Brand Hover Darker */
    
    --success-color: #059669;      /* Emerald 600 */
    --warning-color: #d97706;      /* Amber 600 */
    --danger-color: #dc2626;       /* Red 600 */

    --bg-color: #f8fafc;           /* Slate 50 */
    --card-bg: #ffffff;
    
    --text-main: #0f172a;          /* Slate 900 */
    --text-muted: #64748b;         /* Slate 500 */
    --border-color: #e2e8f0;       /* Slate 200 */

    /* Shadows & Transitions */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    background-image: radial-gradient(circle at 100% 0%, rgba(79, 70, 229, 0.04) 0%, transparent 25%),
                      radial-gradient(circle at 0% 100%, rgba(16, 185, 129, 0.03) 0%, transparent 25%);
    background-attachment: fixed;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

/* Navbar */
.navbar {
    background-color: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
}
.navbar-brand {
    font-weight: 800;
    color: var(--primary-color) !important;
    font-size: 1.4rem;
}
.nav-link {
    color: var(--text-muted) !important;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
}
.nav-link:hover, .nav-link.active {
    color: var(--accent-color) !important;
    background-color: rgba(79, 70, 229, 0.04);
}

/* Cards */
.card {
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 16px;
    background-color: var(--card-bg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(226, 232, 240, 1);
}
.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 1.75rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}
.card-body {
    padding: 1.75rem;
}

/* Dashboard Summary Cards */
.summary-card {
    border: none !important;
    position: relative;
    overflow: hidden;
    color: white;
}
.summary-card::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    z-index: 1;
}
.summary-card .card-body {
    position: relative;
    z-index: 2;
}
.summary-card .card-title {
    color: rgba(255,255,255,0.9);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.summary-card h2 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: white;
    letter-spacing: -0.03em;
}
.bg-primary-grad { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); }
.bg-success-grad { background: linear-gradient(135deg, #10b981 0%, #047857 100%); }
.bg-info-grad    { background: linear-gradient(135deg, #1d4066 0%, #11263c 100%); }
.bg-warning-grad { background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%); }

/* Buttons */
.btn {
    border-radius: 10px;
    font-weight: 500;
    padding: 0.6rem 1.25rem;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.01em;
}
.btn-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    box-shadow: 0 4px 12px rgba(17, 38, 60, 0.25);
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(17, 38, 60, 0.35);
}
.btn-outline-primary {
    color: var(--accent-color);
    border-color: var(--accent-color);
}
.btn-outline-primary:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(17, 38, 60, 0.2);
}

/* Tables */
.table-responsive {
    border-radius: 12px;
}
.table {
    margin-bottom: 0;
}
.table th {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1rem;
    background-color: #f8fafc;
}
.table td {
    padding: 1.25rem 1rem;
    vertical-align: middle;
    color: var(--text-main);
    border-bottom: 1px solid #f1f5f9;
}
.table-hover tbody tr {
    transition: var(--transition);
}
.table-hover tbody tr:hover {
    background-color: #f8fafc;
}

/* Badges */
.badge {
    padding: 0.5em 0.85em;
    font-weight: 600;
    font-size: 0.75rem;
    border-radius: 8px;
    letter-spacing: 0.02em;
}

/* Forms */
.form-control, .form-select {
    border-radius: 10px;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    background-color: #f8fafc;
    transition: var(--transition);
}
.form-control:focus, .form-select:focus {
    background-color: white;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(17, 38, 60, 0.1);
}
.input-group-text {
    background-color: #f1f5f9;
    border-color: var(--border-color);
    border-radius: 10px;
    font-weight: 500;
}
.form-label {
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Custom Dropdown */
.dropdown-menu {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}
.dropdown-item {
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}
.dropdown-item:hover {
    background-color: var(--bg-color);
}

/* Scrollbar styling for elegance */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Custom Skeleton Shimmer Effect */
.placeholder {
    position: relative;
    overflow: hidden;
    background-color: #e2e8f0 !important; /* Slate 200 base */
    opacity: 1 !important; /* Override bootstrap glow opacity */
}

.placeholder::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: translateX(-100%);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Mobile Navigation & PWA Styles */
@media (max-width: 991.98px) {
    body {
        padding-bottom: calc(85px + env(safe-area-inset-bottom)); /* Leave space for bottom nav considering safe-area */
    }
}

.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(70px + env(safe-area-inset-bottom));
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    z-index: 1040;
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

.nav-item-mobile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 600;
    flex: 1;
    height: 100%;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    transition: var(--transition);
}

.nav-item-mobile.active {
    color: var(--accent-color);
}

.nav-item-mobile.active i {
    color: var(--accent-color);
    transform: translateY(-2px) scale(1.1);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-item-mobile:hover, .nav-item-mobile:focus {
    color: var(--accent-hover);
}

/* Mobile Friendly Tables (Card Style avoiding horizontal scroll) */
@media (max-width: 767.98px) {
    .table-responsive {
        overflow-x: visible !important; /* Disable bootstrap horizontal scroll wrapper */
    }
    .table-mobile-cards, 
    .table-mobile-cards table, 
    .table-mobile-cards tbody, 
    .table-mobile-cards tr, 
    .table-mobile-cards td {
        display: block;
        width: 100%;
    }
    .table-mobile-cards thead {
        display: none;
    }
    .table-mobile-cards tr {
        background: var(--card-bg);
        border: 1px solid var(--border-color) !important;
        border-radius: 16px;
        margin-bottom: 1.25rem;
        box-shadow: var(--shadow-sm);
        overflow: hidden;
    }
    .table-mobile-cards td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border: none !important;
        border-bottom: 1px solid #f1f5f9 !important;
        padding: 1rem 1.25rem;
        text-align: right;
        min-height: 48px; /* Better touch target inside td */
    }
    .table-mobile-cards td:last-child {
        border-bottom: none !important;
        background-color: #f8fafc;
        justify-content: flex-end;
        gap: 0.5rem;
        padding: 0.75rem 1.25rem;
    }
    .table-mobile-cards td::before {
        content: attr(data-label);
        font-family: 'Inter', sans-serif;
        font-weight: 600;
        text-transform: uppercase;
        font-size: 0.7rem;
        letter-spacing: 0.05em;
        color: var(--text-muted);
        text-align: left;
        margin-right: 1rem;
        flex-shrink: 0;
    }
    .table-mobile-cards td > * {
        text-align: right;
    }
}