:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --secondary: #15acde;
    --danger: #EF4444;
    --dark: #111827;
    --gray: #6B7280;
    --light-gray: #F3F4F6;
    --white: #FFFFFF;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #F9FAFB;
    color: var(--dark);
    line-height: 1.5;
    background-image: 
        radial-gradient(at 40% 20%, hsla(228,100%,74%,0.15) 0px, transparent 50%),
        radial-gradient(at 80% 0%, hsla(189,100%,56%,0.15) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(355,100%,93%,0.15) 0px, transparent 50%);
    background-attachment: fixed;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Glassmorphism Card */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.5rem; }
p { color: var(--gray); margin-bottom: 1rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
}

.btn-danger {
    background-color: var(--danger);
    color: var(--white);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #D1D5DB;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: rgba(255, 255, 255, 0.8);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.form-control::placeholder {
    transition: opacity 0.2s ease;
}

.form-control:focus::placeholder {
    opacity: 0;
}

/* Navbar */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #E5E7EB;
}

th {
    font-weight: 600;
    color: var(--dark);
    background-color: rgba(243, 244, 246, 0.5);
}

tr:hover {
    background-color: rgba(249, 250, 251, 0.5);
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-pending { background-color: #FEF3C7; color: #D97706; }
.badge-completed { background-color: #D1FAE5; color: #059669; }
.badge-approved { background-color: #DBEAFE; color: #1D4ED8; }
.badge-rejected { background-color: #FEE2E2; color: #DC2626; }

/* Alerts */
.alert {
    padding: 0.9rem 1rem;
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}
.alert-success {
    background-color: #ECFDF5;
    color: #065F46;
    border-color: #A7F3D0;
}
.alert-danger {
    background-color: #FEF2F2;
    color: #B91C1C;
    border-color: #FECACA;
}
.alert-info {
    background-color: #EFF6FF;
    color: #1D4ED8;
    border-color: #BFDBFE;
}

/* Camera/Upload Area */
.upload-area {
    border: 2px dashed #D1D5DB;
    border-radius: 1rem;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background-color: rgba(255, 255, 255, 0.5);
}

.upload-area:hover {
    border-color: var(--primary);
    background-color: rgba(79, 70, 229, 0.05);
}

.preview-image {
    max-width: 100%;
    border-radius: 0.5rem;
    margin-top: 1rem;
    display: none;
}

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }

/* Responsive adjustments */
@media (max-width: 768px) {
    .container { padding: 1rem; }
    .card { padding: 1.5rem; }
    .navbar { flex-direction: column; gap: 1rem; }
}

/* Staff table smaller font */
.staff-table th,
.staff-table td {
    font-size: 0.8rem;
    padding: 0.6rem 0.75rem;
}