/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
    --radius-sm: 0.5rem;
    --radius-lg: 1rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header-content {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Main Content */
.main {
    margin-bottom: 3rem;
}

.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 2rem;
    text-align: center;
}

.card-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.card-header p {
    opacity: 0.9;
    font-size: 1rem;
}

.card-body {
    padding: 2.5rem;
}

/* Form Styles */
.parse-form {
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.input-wrapper {
    position: relative;
    flex: 1;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.125rem;
}

.url-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--surface);
}

.url-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.parse-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.parse-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.parse-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.help-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 3rem 1rem;
}

.spinner {
    width: 3rem;
    height: 3rem;
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
    animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* Results */
.results {
    animation: fadeInUp 0.5s ease-out;
}

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

.results-header {
    margin-bottom: 2rem;
}

.results-header h3 {
    color: var(--success-color);
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface-hover);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-all;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.results-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.download-btn, .preview-btn {
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
}

.download-btn {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
}

.preview-btn {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.download-btn:hover, .preview-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Preview */
.preview {
    background: var(--surface-hover);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border-light);
}

.preview h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.url-list {
    max-height: 300px;
    overflow-y: auto;
    display: grid;
    gap: 0.5rem;
}

.url-item {
    background: var(--surface);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    word-break: break-all;
    transition: all 0.2s ease;
}

.url-item:hover {
    background: var(--primary-light);
    color: white;
    transform: translateX(4px);
}

/* Error State */
.error-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--error-color);
}

.error-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.error-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.error-state p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.retry-btn {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.retry-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}



/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-color);
    animation: slideInRight 0.3s ease-out;
    max-width: 400px;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.mb-2 {
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .parse-btn {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    
    .card-body {
        padding: 1.5rem;
    }
    
    .header-content {
        padding: 2rem;
    }
}