/* ========================
   STAFF DASHBOARD
   Glassmorphism, Gradients
============================= */

:root {
    /* Modern Professional Gradients - Blue/Teal Theme */
    --primary-gradient: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, #14b8a6 100%);
    --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 50%, #06b6d4 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #eab308 100%);
    
    /* Liquid Glass Card Gradients */
    --card-gradient: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.05) 100%);
    --card-gradient-hover: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.15) 0%, 
        rgba(255, 255, 255, 0.08) 100%);
    --card-header-gradient: linear-gradient(135deg,
        rgba(14, 165, 233, 0.2) 0%,
        rgba(6, 182, 212, 0.15) 50%,
        rgba(20, 184, 166, 0.2) 100%);
    
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.25);
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.18);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 20px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    position: relative;
    overflow-x: hidden;
}

/* Professional Animated Mesh Gradient Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
    background: 
        radial-gradient(circle at 15% 20%, rgba(14, 165, 233, 0.25), transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(6, 182, 212, 0.25), transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(20, 184, 166, 0.2), transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.2), transparent 45%);
    animation: backgroundShift 25s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        opacity: 0.4;
    }
    33% { 
        transform: scale(1.05) rotate(2deg);
        opacity: 0.5;
    }
    66% { 
        transform: scale(1.08) rotate(-2deg);
        opacity: 0.45;
    }
}

/* Liquid Glass Card with Gradient Background */
.card {
    background: var(--card-gradient) !important;
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-radius: var(--border-radius) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--shadow-md),
                inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
    transition: var(--transition-smooth) !important;
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        transparent 100%);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg),
                inset 0 1px 0 rgba(255, 255, 255, 0.15) !important;
    background: var(--card-gradient-hover) !important;
    border-color: rgba(255, 255, 255, 0.3) !important;
}

.card-header {
    background: var(--card-header-gradient) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border) !important;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    padding: 1.25rem 1.5rem !important;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 100%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(50%); }
}

.card-body {
    backdrop-filter: blur(24px) !important;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.03) 0%,
        rgba(255, 255, 255, 0.01) 100%) !important;
    padding: 1.5rem !important;
}

/* Modern Navbar with Liquid Glass Effect */
.navbar {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.12) 0%,
        rgba(255, 255, 255, 0.08) 100%) !important;
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--shadow-sm),
                inset 0 1px 0 rgba(255, 255, 255, 0.15);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-smooth);
    filter: brightness(1.1);
}

.navbar-brand:hover {
    transform: scale(1.05);
    filter: brightness(1.3);
}

.navbar-nav .nav-link {
    position: relative;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 8px;
    transition: var(--transition-smooth) !important;
    font-weight: 500;
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::before {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.15) 0%,
        rgba(6, 182, 212, 0.1) 100%);
    transform: translateY(-2px);
}

/* Modern Button Styles */
.btn {
    border-radius: 10px !important;
    padding: 0.625rem 1.5rem !important;
    font-weight: 600 !important;
    border: none !important;
    transition: var(--transition-smooth) !important;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm) !important;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md) !important;
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--primary-gradient) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3) !important;
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4) !important;
}

.btn-danger {
    background: var(--danger-gradient) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3) !important;
}

.btn-danger:hover {
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.4) !important;
}

.btn-success {
    background: var(--success-gradient) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3) !important;
}

.btn-success:hover {
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4) !important;
}

.btn-warning {
    background: var(--warning-gradient) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3) !important;
}

.btn-warning:hover {
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4) !important;
}

.btn-secondary {
    background: linear-gradient(135deg, rgba(71, 85, 105, 0.8), rgba(30, 41, 59, 0.8)) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(71, 85, 105, 0.3) !important;
}

.btn-sm {
    padding: 0.4rem 1rem !important;
    font-size: 0.875rem !important;
}

/* Form Controls with Liquid Glass Effect */
.form-control, .form-select {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.08) 0%,
        rgba(255, 255, 255, 0.05) 100%) !important;
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px !important;
    padding: 0.75rem 1rem !important;
    transition: var(--transition-smooth) !important;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05),
                0 2px 8px rgba(0, 0, 0, 0.05);
}

.form-control:focus, .form-select:focus {
    border-color: rgba(14, 165, 233, 0.5) !important;
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1),
                inset 0 1px 2px rgba(0, 0, 0, 0.05) !important;
    transform: translateY(-2px);
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.12) 0%,
        rgba(255, 255, 255, 0.08) 100%) !important;
}

.input-group-text {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.08) 0%,
        rgba(255, 255, 255, 0.05) 100%) !important;
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px !important;
}

/* Tabs with Liquid Glass */
.nav-tabs {
    border-bottom: 2px solid var(--glass-border) !important;
}

.nav-tabs .nav-link {
    border: none !important;
    border-radius: 12px 12px 0 0 !important;
    padding: 0.75rem 1.5rem !important;
    margin-right: 0.25rem;
    transition: var(--transition-smooth) !important;
    font-weight: 600;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.05) 0%,
        rgba(255, 255, 255, 0.02) 100%);
}

.nav-tabs .nav-link:hover {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.15) 0%,
        rgba(6, 182, 212, 0.1) 100%);
}

.nav-tabs .nav-link.active {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.2) 0%,
        rgba(6, 182, 212, 0.15) 100%) !important;
    backdrop-filter: blur(20px);
    border-bottom: 3px solid #0ea5e9 !important;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.15);
}

/* Tables with Liquid Glass Effect */
.table {
    background: transparent !important;
}

.table thead th {
    background: var(--card-header-gradient) !important;
    backdrop-filter: blur(12px);
    border: none !important;
    padding: 1rem !important;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.05) 0%,
        rgba(255, 255, 255, 0.02) 100%);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.table tbody tr:hover {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.25) 0%,
        rgba(6, 182, 212, 0.2) 100%);
    transform: scale(1.01);
    box-shadow: 0 4px 16px rgba(14, 165, 233, 0.25);
    color: #ffffff !important;
}

.table tbody tr:hover td {
    color: #ffffff !important;
}

.table tbody td {
    padding: 1rem !important;
    vertical-align: middle;
    border: none !important;
}

.table-striped tbody tr:nth-of-type(odd) {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.08) 0%,
        rgba(6, 182, 212, 0.05) 100%);
}

/* DataTables Enhancement with Liquid Glass */
.dataTables_wrapper {
    background: var(--card-gradient);
    backdrop-filter: blur(24px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-top: 1rem;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.dataTables_length label,
.dataTables_filter label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

.dataTables_length select {
    width: auto !important;
    margin: 0 !important;
}

.dataTables_paginate .paginate_button {
    border-radius: 8px !important;
    margin: 0 0.25rem !important;
    padding: 0.5rem 1rem !important;
    transition: var(--transition-smooth) !important;
}

.dataTables_paginate .paginate_button.current {
    background: var(--primary-gradient) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3) !important;
}

.dataTables_paginate .paginate_button:hover {
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.2) 0%,
        rgba(6, 182, 212, 0.15) 100%) !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.2);
}

/* Alerts with Liquid Glass Gradient */
.alert {
    border-radius: var(--border-radius) !important;
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--shadow-sm),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    padding: 1rem 1.5rem !important;
    animation: slideInDown 0.4s ease-out;
}

@keyframes slideInDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.alert-success {
    background: linear-gradient(135deg, 
        rgba(16, 185, 129, 0.2) 0%, 
        rgba(6, 182, 212, 0.15) 100%) !important;
    border-color: rgba(16, 185, 129, 0.3) !important;
}

.alert-danger {
    background: linear-gradient(135deg, 
        rgba(239, 68, 68, 0.2) 0%, 
        rgba(220, 38, 38, 0.15) 100%) !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
}

.alert-warning {
    background: linear-gradient(135deg, 
        rgba(245, 158, 11, 0.2) 0%, 
        rgba(234, 179, 8, 0.15) 100%) !important;
    border-color: rgba(245, 158, 11, 0.3) !important;
}

.alert-info {
    background: linear-gradient(135deg, 
        rgba(14, 165, 233, 0.2) 0%, 
        rgba(6, 182, 212, 0.15) 100%) !important;
    border-color: rgba(14, 165, 233, 0.3) !important;
}

/* Modal Enhancement with Liquid Glass */
.modal-content {
    background: var(--card-gradient) !important;
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    border-radius: var(--border-radius) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--shadow-lg),
                inset 0 1px 0 rgba(255, 255, 255, 0.15) !important;
}

.modal-header {
    background: var(--card-header-gradient) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border) !important;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
}

.modal-backdrop {
    backdrop-filter: blur(8px);
}

/* Footer with Liquid Glass */
footer {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.12) 0%,
        rgba(255, 255, 255, 0.08) 100%) !important;
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-top: 1px solid var(--glass-border);
    padding: 1.5rem 0;
    margin-top: auto;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.05),
                inset 0 1px 0 rgba(255, 255, 255, 0.15);
    text-align: center;
}

main {
    flex: 1;
    padding: 2rem 0;
}

/* Dark Mode Toggle with Liquid Glass */
#darkModeToggleContainer {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

#darkModeToggle {
    width: 36px;
    height: 36px;
    cursor: pointer;
    transition: var(--transition-smooth);
    padding: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.15) 0%,
        rgba(6, 182, 212, 0.1) 100%);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.15);
}

#darkModeToggle:hover {
    transform: rotate(180deg) scale(1.1);
    background: linear-gradient(135deg,
        rgba(14, 165, 233, 0.25) 0%,
        rgba(6, 182, 212, 0.2) 100%);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
}

.tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg,
        rgba(0, 0, 0, 0.95) 0%,
        rgba(30, 41, 59, 0.95) 100%);
    backdrop-filter: blur(12px);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-size: 0.75rem;
    white-space: nowrap;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#darkModeToggleContainer:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

/* Badge Styles with Gradient */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.875rem;
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

/* Status Indicators */
.status-active {
    color: #9A2A2A;
    font-weight: 700;
    text-shadow: 0 0 12px rgba(154, 42, 42, 0.5);
}

.status-expired {
    color: #94a3b8;
    font-weight: 500;
    font-style: italic;
}

/* Loading Animation */
.spinner-border {
    border-width: 3px;
}

/* Professional Scrollbar Styling */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.03) 0%,
        rgba(255, 255, 255, 0.01) 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: padding-box;
    box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 50%, #14b8a6 100%);
    background-clip: padding-box;
}

/* Responsive */
@media (max-width: 768px) {
    .card {
        margin-bottom: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .btn {
        padding: 0.5rem 1rem !important;
    }
}

/* Accessibility with Modern Styling */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid rgba(14, 165, 233, 0.5);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body::before {
        display: none;
    }
    
    .navbar,
    footer,
    .btn {
        display: none;
    }
    
    .card {
        break-inside: avoid;
    }
}