/* PyCampus - Custom Styles */

/* ===============================
   Global Styles
=============================== */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

.main-content {
    min-height: calc(100vh - 200px);
    padding-top: 100px; /* Fixed navbar için ekstra padding */
    margin-top: 0; /* Bootstrap mt-5'i override et */
}

/* ===============================
   Navigation Styles
=============================== */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.375rem;
}

/* ===============================
   Hero Section
=============================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    position: relative;
    overflow: hidden;
}

.hero::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-animation {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ===============================
   Card Styles
=============================== */
.course-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 1rem;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}

.course-card .card-img-top {
    height: 200px;
    object-fit: cover;
    border-radius: 1rem 1rem 0 0;
}

.category-card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 1rem;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.15) !important;
}

.category-card:hover .category-icon {
    transform: scale(1.1);
}

.category-icon {
    transition: transform 0.3s ease;
}

/* ===============================
   Stats Section
=============================== */
.stats-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.stat-item i {
    margin-bottom: 1rem;
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* ===============================
   Button Styles
=============================== */
.btn {
    font-weight: 500;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e0a800 100%);
    border: none;
    color: var(--dark-color);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e0a800 0%, #cc9700 100%);
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

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

/* ===============================
   Footer Styles
=============================== */
footer {
    border-top: 4px solid var(--primary-color);
}

footer .social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

footer .social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

footer ul li a {
    transition: all 0.3s ease;
}

footer ul li a:hover {
    color: #ffffff !important;
    transform: translateX(3px);
}

/* ===============================
   Alert Styles
=============================== */
.alert {
    border: none;
    border-radius: 0.75rem;
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, #d1e7dd 0%, #badbcc 100%);
    color: #0f5132;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f1aeb5 100%);
    color: #842029;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffecb5 100%);
    color: #664d03;
}

.alert-info {
    background: linear-gradient(135deg, #cff4fc 0%, #b8eafe 100%);
    color: #055160;
}

/* ===============================
   Form Styles
=============================== */
.form-control {
    border-radius: 0.5rem;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* ===============================
   CTA Section
=============================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    position: relative;
}

.cta-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 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

/* ===============================
   Responsive Design
=============================== */
@media (max-width: 768px) {
    .hero .display-4 {
        font-size: 2.5rem;
    }
    
    .hero .lead {
        font-size: 1.1rem;
    }
    
    .stat-item h3 {
        font-size: 2.5rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
    }
}

@media (max-width: 576px) {
    .hero .display-4 {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .stat-item h3 {
        font-size: 2rem;
    }
}

/* ===============================
   Utility Classes
=============================== */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--info-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

.border-radius-lg {
    border-radius: 1rem !important;
}

.border-radius-xl {
    border-radius: 1.5rem !important;
}

/* ===============================
   Loading Animation
=============================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}