/* Image to PDF Converter Styles */

/* === GLOBAL STYLES === */
:root {
    /* Core Color Palette - Dark Theme (Default) */
    --primary-bg: #0a0d14;
    --secondary-bg: #111827;
    --tertiary-bg: #1e293b;
    --accent-color-1: #00f0ff;
    --accent-color-2: #e100ff;
    --accent-color-3: #5061ff;
    --text-primary: #f5f7fa;
    --text-secondary: #94a3b8;
    
    /* Functional Colors */
    --glass-bg: rgba(18, 24, 38, 0.7);
    --card-border: rgba(0, 240, 255, 0.2);
    --glass-highlight: rgba(255, 255, 255, 0.05);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Upload specific colors */
    --upload-bg: rgba(0, 240, 255, 0.05);
    --upload-border: rgba(0, 240, 255, 0.3);
    --upload-hover: rgba(0, 240, 255, 0.1);
    
    /* Animation Timing */
    --transition-fast: 0.3s;
    --transition-medium: 0.5s;
    --transition-slow: 0.8s;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Light Theme Variables */
body.light-theme {
    --primary-bg: #ffffff;
    --secondary-bg: #f8fafc;
    --tertiary-bg: #e2e8f0;
    --accent-color-1: #0ea5e9;
    --accent-color-2: #8b5cf6;
    --accent-color-3: #3b82f6;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(14, 165, 233, 0.3);
    --glass-highlight: rgba(255, 255, 255, 0.6);
    --upload-bg: rgba(14, 165, 233, 0.05);
    --upload-border: rgba(14, 165, 233, 0.3);
    --upload-hover: rgba(14, 165, 233, 0.1);
}

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

body {
    font-family: 'Orbitron', monospace;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header Styles */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    color: var(--text-primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--accent-color-1);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--accent-color-2);
    transform: scale(1.1);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 200px);
}

/* Tool Header */
.tool-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.tool-info {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.tool-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tool-icon i {
    font-size: 2rem;
    color: white;
}

.tool-details {
    text-align: left;
}

.tool-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.tool-features {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--accent-color-1);
}

/* Tool Interface */
.tool-interface {
    max-width: 900px;
    margin: 0 auto;
}

/* Step Sections */
.step-section {
    display: none;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.step-section.active {
    display: block;
    animation: slideIn 0.5s ease;
}

.step-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-info h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.step-info p {
    color: var(--text-secondary);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--upload-border);
    border-radius: var(--radius-lg);
    background: var(--upload-bg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-lg);
}

.upload-area:hover {
    border-color: var(--accent-color-1);
    background: var(--upload-hover);
    transform: translateY(-2px);
}

.upload-area.dragover {
    border-color: var(--accent-color-1);
    background: var(--upload-hover);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    color: var(--accent-color-1);
    margin-bottom: var(--spacing-md);
}

.upload-content h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.upload-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.upload-limit {
    font-size: 0.9rem;
    color: var(--warning-color);
}

.upload-btn {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 240, 255, 0.3);
}

/* Uploaded Images */
.uploaded-images h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.image-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.image-item {
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    text-align: center;
    position: relative;
    transition: all var(--transition-fast);
}

.image-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.2);
}

.image-preview {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.image-name {
    font-size: 0.8rem;
    color: var(--text-secondary);
    word-break: break-all;
    margin-bottom: var(--spacing-xs);
}

.image-size {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.remove-image {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    background: var(--error-color);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all var(--transition-fast);
}

.remove-image:hover {
    transform: scale(1.1);
}

.upload-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.setting-group label {
    font-weight: 600;
    color: var(--text-primary);
}

.setting-input {
    padding: var(--spacing-sm);
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.setting-input:focus {
    outline: none;
    border-color: var(--accent-color-1);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.setting-range {
    appearance: none;
    height: 6px;
    background: var(--tertiary-bg);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.setting-range::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-color-1);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.setting-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.range-value {
    color: var(--accent-color-1);
    font-weight: 600;
    font-size: 0.9rem;
}

.settings-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    font-family: inherit;
}

.btn.primary {
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    color: white;
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 240, 255, 0.3);
}

.btn.secondary {
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
}

.btn.secondary:hover {
    background: var(--accent-color-3);
    color: white;
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Processing Animation */
.processing-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.processing-animation {
    margin-bottom: var(--spacing-lg);
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--card-border);
    border-top: 4px solid var(--accent-color-1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

#processing-status {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--tertiary-bg);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    color: var(--text-secondary);
}

/* Complete Section */
.complete-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.success-icon {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: var(--spacing-lg);
}

.complete-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.pdf-info {
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

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

.info-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.info-value {
    display: block;
    color: var(--accent-color-1);
    font-weight: 600;
    font-size: 1.1rem;
}

.complete-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Footer */
footer {
    background: var(--tertiary-bg);
    border-top: 1px solid var(--card-border);
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--text-secondary);
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .tool-info {
        flex-direction: column;
        text-align: center;
    }
    
    .tool-details {
        text-align: center;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .image-list {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .upload-actions,
    .settings-actions,
    .complete-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .pdf-info {
        grid-template-columns: 1fr;
    }
    
    .nav-right {
        gap: var(--spacing-sm);
    }
    
    .back-btn span {
        display: none;
    }
}

@media (max-width: 480px) {
    .tool-title {
        font-size: 1.5rem;
    }
    
    .step-header {
        flex-direction: column;
        text-align: center;
    }
    
    .upload-area {
        padding: var(--spacing-lg);
    }
    
    .upload-icon {
        font-size: 2rem;
    }
}