/* Custom Styles for QR Boost */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --light-bg: #f8f9fa;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

/* Navigation */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: white !important;
}

.navbar-brand i {
    font-size: 1.8rem;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.95) !important;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: white !important;
}

.navbar-dark .navbar-nav .nav-link.active {
    color: white !important;
    font-weight: 500;
}

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

.hero-section h1 {
    color: white !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-section .lead {
    color: white !important;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    padding: 1rem 1.5rem;
}

/* Form Controls */
.form-label {
    color: #495057;
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

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

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5568d3 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background-color: var(--success-color);
    border: none;
}

.btn-success:hover {
    background-color: #157347;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(25, 135, 84, 0.4);
}

/* QR Code Preview */
#qrPreviewContainer {
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 2rem;
}

.qr-placeholder {
    text-align: center;
}

#qrcode {
    display: inline-block;
}

#qrcode img {
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* Download Section */
#downloadSection {
    margin-top: 1.5rem;
}

/* Features List */
.list-unstyled li {
    padding: 0.5rem 0;
}

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

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

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    #qrPreviewContainer {
        min-height: 250px;
        padding: 1rem;
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Loading Spinner */
.spinner-border-custom {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Info Card Styling */
.card-text.small {
    line-height: 1.6;
    color: #6c757d;
}

/* Icon Styling */
.fa-qrcode.fa-10x {
    font-size: 10rem;
}

/* Disabled Nav Link */
.nav-link.disabled {
    opacity: 0.7;
    color: rgba(255, 255, 255, 0.7) !important;
}