/* Custom Styles for Image Converter */

: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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

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

.supported-formats .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    margin: 0.2rem;
    transition: all 0.3s ease;
}

.supported-formats .badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Upload Area */
.upload-area {
    transition: all 0.3s ease;
    cursor: pointer;
    background: linear-gradient(45deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary-color) !important;
    background: linear-gradient(45deg, #e3f2fd 0%, #f8f9fa 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(13, 110, 253, 0.15);
}

.upload-area.dragover {
    border-color: var(--success-color) !important;
    background: linear-gradient(45deg, #e8f5e8 0%, #f0f8f0 100%);
    transform: scale(1.02);
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.upload-area:hover::before {
    left: 100%;
}

/* File Info */
.file-info {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 0.5rem;
    padding: 1rem;
    border: 1px solid #dee2e6;
}

/* Format Selection */
.format-selection .btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.format-selection .btn-outline-primary {
    transition: all 0.3s ease;
    border-width: 2px;
}

.format-selection .btn-outline-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.2);
}

/* Progress Bar */
.progress {
    height: 1rem;
    border-radius: 0.5rem;
    background-color: #e9ecef;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(45deg, var(--success-color) 0%, #20c997 100%);
    transition: width 0.3s ease;
}

/* Cards */
.card {
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1) !important;
}

/* Buttons */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

/* Feature Cards */
.feature-card {
    padding: 2rem 1rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    transition: all 0.3s ease;
}

.feature-card:hover i {
    transform: scale(1.1);
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Border Dashed */
.border-dashed {
    border-style: dashed !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .hero-section .display-4 {
        font-size: 2rem;
    }
    
    .upload-area {
        padding: 2rem 1rem !important;
    }
    
    .format-selection .btn {
        margin-bottom: 0.5rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .upload-area {
        background: linear-gradient(45deg, #2d3748 0%, #4a5568 100%);
        color: white;
    }
    
    .file-info {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
        color: white;
        border-color: #4a5568;
    }
}

/* Loading spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Result section styling */
.alert {
    border-radius: 0.75rem;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.alert-success {
    background: linear-gradient(135deg, #d1edff 0%, #e8f5e8 100%);
    color: #0f5132;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

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

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

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

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}


/* Additional styles for multiple file upload */

.file-list {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 0.75rem;
    padding: 1rem;
    border: 1px solid #dee2e6;
}

.file-item {
    background: white;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef !important;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: var(--primary-color) !important;
}

.result-files {
    max-height: 400px;
    overflow-y: auto;
}

.result-file {
    transition: all 0.3s ease;
}

.result-file:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* HEIC specific styling */
.badge.bg-warning {
    background: linear-gradient(45deg, #ffc107 0%, #ffca2c 100%) !important;
    color: #212529 !important;
    font-weight: 600;
    text-shadow: none;
}

.btn-outline-warning:checked + .btn-outline-warning,
.btn-outline-warning.active {
    background: linear-gradient(45deg, #ffc107 0%, #ffca2c 100%);
    border-color: #ffc107;
    color: #212529;
}

/* Enhanced progress section */
#progressSection {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid #e9ecef;
}

/* File count badge */
#fileCount {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
}

/* Drag and drop enhancements for multiple files */
.upload-area.dragover {
    border-color: var(--success-color) !important;
    background: linear-gradient(45deg, #d4edda 0%, #f0f8f0 100%);
    transform: scale(1.02);
}

.upload-area.dragover::after {
    content: 'Dateien hier ablegen...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--success-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 600;
    z-index: 10;
}

/* Responsive improvements for mobile */
@media (max-width: 768px) {
    .file-item {
        flex-direction: column;
        align-items: flex-start !important;
    }
    
    .file-item .btn {
        margin-top: 0.5rem;
        align-self: flex-end;
    }
    
    .result-file .row {
        text-align: center;
    }
    
    .result-file .col-md-4,
    .result-file .col-md-6 {
        margin-bottom: 1rem;
    }
}

/* Loading animation for file processing */
.processing {
    position: relative;
    opacity: 0.7;
}

.processing::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Enhanced scrollbar for result files */
.result-files::-webkit-scrollbar {
    width: 6px;
}

.result-files::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.result-files::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.result-files::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}