/* Global Styles */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #6c757d;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-color);
    overflow-x: hidden;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.1;
}

/* Card Styles */
.card {
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-shadow:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Dashboard Cards */
.card.bg-primary, .card.bg-success, .card.bg-info, .card.bg-warning {
    transition: transform 0.3s ease;
}

.card.bg-primary:hover, .card.bg-success:hover, .card.bg-info:hover, .card.bg-warning:hover {
    transform: translateY(-3px);
}

/* Table Styles */
.table-hover tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
    cursor: pointer;
}

/* Badge Styles */
.badge {
    padding: 0.5em 0.75em;
    font-weight: 500;
}

/* Button Styles */
.btn {
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 100%);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
}

/* Form Controls */
.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    padding: 0.625rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Footer Styles */
footer {
    margin-top: auto;
}

.social-links a {
    transition: opacity 0.3s ease;
}

.social-links a:hover {
    opacity: 0.8;
}

/* Chart Containers */
canvas {
    max-height: 300px;
    width: 100% !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 3px solid var(--primary-color);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Print Styles */
@media print {
    .navbar, footer, .btn, .no-print {
        display: none !important;
    }
    
    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Enhanced Button Styles - Fix Register Button Visibility */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border: none;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

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

.btn-outline-light {
    border: 2px solid white;
    color: white;
    background-color: transparent;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background-color: white;
    color: #3b82f6;
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

.btn-light {
    background-color: white;
    color: #3b82f6;
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    background-color: #f8f9fa;
}

/* Hero Section Buttons Container */
.hero-section .d-grid {
    gap: 1rem;
}

.hero-section .btn {
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* CTA Section Button */
section:last-of-type .btn-primary {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Navigation Register Button */
.navbar .btn-light {
    background-color: white;
    color: #3b82f6;
    padding: 0.5rem 1.25rem;
    font-weight: 600;
}

.navbar .btn-light:hover {
    background-color: #f8f9fa;
    transform: translateY(-1px);
}

/* Button Icons */
.btn i {
    margin-right: 0.5rem;
}

/* Responsive Button Adjustments */
@media (max-width: 768px) {
    .hero-section .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .d-sm-flex {
        flex-direction: column;
    }
}

/* Alternative: More Prominent Register Button */
.btn-register-prominent {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    display: inline-block;
}

.btn-register-prominent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    color: white;
}

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

.btn-register-prominent i {
    margin-right: 0.5rem;
}