/* Modern CSS with Professional Color Scheme */
:root {
    --primary-color: #2A5C82;
    --secondary-color: #1E3A5F;
    --accent-color: #4A90E2;
    --success-color: #27AE60;
    --warning-color: #F39C12;
    --danger-color: #E74C3C;
    --light-bg: #F8FAFC;
    --dark-text: #2C3E50;
    --border-radius: 12px;
    --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--dark-text);
}

/* Modern Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--dark-text) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

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

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    background: white;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    border: none;
    padding: 1.2rem 1.5rem;
}

.card-header i {
    margin-right: 0.5rem;
}

.card-body {
    padding: 2rem;
}

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    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::after {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(188, 193, 198, 0.536);
}

.btn-success {
    background: linear-gradient(135deg, #27AE60, #2ECC71);
}

.btn-info {
    background: linear-gradient(135deg, #3498DB, #5DADE2);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f31212, #F1C40F);
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    border: none;
    padding: 1rem;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(204, 212, 220, 0.344);
    transform: scale(1.01);
}

/* Forms */
.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #E8ECEF;
    padding: 0.8rem 1rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-label {
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
}

/* Badges */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
}

.badge-success {
    background: linear-gradient(135deg, #27AE60, #2ECC71);
    color: white;
}

.badge-warning {
    background: linear-gradient(135deg, #F39C12, #F1C40F);
    color: white;
}

/* Dashboard Stats Cards */
.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(45deg);
    transition: var(--transition);
}

.stat-card:hover::before {
    transform: rotate(45deg) translate(10%, 10%);
}

.stat-card i {
    font-size: 2.5rem;
    opacity: 0.5;
    position: absolute;
    bottom: 1rem;
    right: 1rem;
}

.stat-card h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* QR Code Display */
.qr-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--box-shadow);
}

.qr-container img {
    max-width: 250px;
    border: 2px solid #E8ECEF;
    border-radius: 12px;
    padding: 1rem;
    background: white;
}

/* Footer */
.footer {
    background: white;
    margin-top: auto;
    border-top: 1px solid #E8ECEF;
}

.footer h5, .footer h6 {
    color: var(--dark-text);
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer a {
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--accent-color) !important;
    padding-left: 5px;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-slide-in {
    animation: slideIn 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
    
    .stat-card h3 {
        font-size: 1.5rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #E8ECEF;
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile App Optimizations */

/* Better touch targets */
button, 
.btn,
.nav-link,
.card,
[role="button"] {
    min-height: 44px;
    min-width: 44px;
}

/* Remove tap highlight on mobile */
* {
    -webkit-tap-highlight-color: transparent;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* App-like transitions */
.page-transition {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* iOS-style cards */
.card {
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

/* Bottom sheet modal for mobile */
@media (max-width: 768px) {
    .modal-dialog {
        margin: 0;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        transform: translateY(100%);
        transition: transform 0.3s ease;
    }
    
    .modal.show .modal-dialog {
        transform: translateY(0);
    }
    
    .modal-content {
        border-radius: 20px 20px 0 0;
    }
}

/* App-like header */
.navbar {
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9) !important;
}

/* Pull to refresh animation (optional) */
.pull-to-refresh {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    transition: all 0.3s ease;
}

/* Safe area insets for modern phones */
@supports (padding: max(0px)) {
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .navbar {
        padding-top: max(0.5rem, env(safe-area-inset-top));
    }
}
/* Change all table header colors */
.table thead th {
    color: #fefeff !important;  /* Dark blue-gray */
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Or make them darker */
.table thead th {
    color: #ffffff !important;  /* Almost black */
}

/* Or any color you prefer */
.table thead th {
    color: #ffffff !important;  /* Another dark blue */
}

/* Or purple to match your theme */
.table thead th {
    color: #ffffff !important;  /* Match your primary color */
}