/* ============================================
   EXIF Metadata Viewer - Modern Stylesheet
   With Dark Mode Support, ExifReader Integration
   Teal/Cyan Theme
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
    --transition-speed: 0.25s;
    
    /* Primary Colors - Teal/Cyan theme */
    --primary: #0D9488;
    --primary-light: #CCFBF1;
    --primary-dark: #0F766E;
    --accent: #06B6D4;
    --success: #10B981;
    --success-light: #D1FAE5;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --danger: #EF4444;
    --danger-light: #FEE2E2;
    --blue: #3B82F6;
    --blue-light: #DBEAFE;
    --purple: #8B5CF6;
    --purple-light: #EDE9FE;
    --pink: #EC4899;
    --pink-light: #FCE7F3;
    --orange: #F97316;
    --orange-light: #FFEDD5;
    --teal: #14B8A6;
    --yellow: #EAB308;
    --yellow-light: #FEF9C3;
    --gray: #6B7280;
    --gray-light: #F3F4F6;
    
    /* Background Colors */
    --bg: #f8fafc;
    --bg-elevated: #ffffff;
    --bg-secondary: #f1f5f9;
    
    /* Text Colors */
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    /* Border Colors */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* EXIF-specific colors */
    --exif-bg: #0f2937;
    --exif-text: #e4e4e7;
    --exif-tag-name: #5eead4;
    --exif-tag-value: #a5f3fc;
    --exif-category: #2dd4bf;
    --exif-line-number: #525866;
    --exif-highlight: rgba(13, 148, 136, 0.15);
    
    /* Upload area */
    --upload-bg: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
    --upload-hover-bg: linear-gradient(135deg, #ccfbf1 0%, #99f6e4 100%);
    
    /* Scrollbar */
    --scrollbar-track: var(--bg);
    --scrollbar-thumb: var(--text-muted);
    --scrollbar-thumb-hover: var(--text-secondary);
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary: #2dd4bf;
    --primary-light: rgba(45, 212, 191, 0.15);
    --primary-dark: #14b8a6;
    --accent: #22d3ee;
    --success: #4ade80;
    --success-light: rgba(74, 222, 128, 0.15);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --danger: #f87171;
    --danger-light: rgba(248, 113, 113, 0.15);
    --blue: #60a5fa;
    --blue-light: rgba(96, 165, 250, 0.15);
    --purple: #a78bfa;
    --purple-light: rgba(167, 139, 250, 0.15);
    --pink: #f472b6;
    --pink-light: rgba(244, 114, 182, 0.15);
    --orange: #fb923c;
    --orange-light: rgba(251, 146, 60, 0.15);
    --yellow: #facc15;
    --yellow-light: rgba(250, 204, 21, 0.15);
    --gray: #9ca3af;
    --gray-light: rgba(156, 163, 175, 0.15);
    
    /* Background Colors */
    --bg: #0f172a;
    --bg-elevated: #1e293b;
    --bg-secondary: #334155;
    
    /* Text Colors */
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Border Colors */
    --border: #334155;
    --border-light: #475569;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.5);
    
    /* EXIF-specific colors - dark mode */
    --exif-bg: #0a1929;
    --exif-text: #c9d1d9;
    --exif-tag-name: #5eead4;
    --exif-tag-value: #a5f3fc;
    --exif-category: #2dd4bf;
    --exif-line-number: #484f58;
    --exif-highlight: rgba(45, 212, 191, 0.2);
    
    /* Upload area */
    --upload-bg: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --upload-hover-bg: linear-gradient(135deg, rgba(45, 212, 191, 0.1) 0%, rgba(45, 212, 191, 0.2) 100%);
    
    /* Scrollbar */
    --scrollbar-track: var(--bg-elevated);
    --scrollbar-thumb: var(--text-muted);
    --scrollbar-thumb-hover: var(--text-secondary);
}

/* Base */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Container */
.tool-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.tool-header {
    text-align: center;
    margin-bottom: 2rem;
}

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

.tool-icon-wrapper {
    width: 64px;
    height: 64px;
    background: var(--primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
}

.tool-icon-wrapper svg,
.tool-icon-wrapper i {
    width: 28px;
    height: 28px;
}

.tool-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin: 0;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.tool-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Main Tool Area */
.tool-main {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

/* Upload Section */
.upload-section {
    padding: 3rem;
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--upload-bg);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.05), rgba(15, 118, 110, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary);
    background: var(--upload-hover-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-area:hover::before,
.upload-area.dragover::before {
    opacity: 1;
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon {
    color: var(--primary);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.upload-area:hover .upload-icon {
    transform: translateY(-5px);
}

.upload-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 0.5rem;
}

.upload-subtitle {
    color: var(--text-secondary);
    margin: 0 0 1.5rem;
    font-size: 1rem;
}

/* Format Groups */
.format-group {
    margin-bottom: 1rem;
}

.format-group-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.file-types {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.file-type-badge {
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.file-type-badge.raw {
    background: var(--orange-light);
    color: var(--orange);
}

.upload-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg);
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-top: 1rem;
    transition: background-color var(--transition-speed);
}

.upload-hint svg,
.upload-hint i {
    color: var(--success);
}

/* Progress Container */
.progress-container {
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.progress-bar-wrapper {
    height: 8px;
    background: var(--bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
    display: block;
}

/* Error Container */
.error-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    margin: 1rem 2rem;
    background: var(--danger-light);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
}

.error-container svg {
    flex-shrink: 0;
}

.error-container span {
    flex: 1;
}

.error-close {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.error-close:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Editor Section */
.editor-section {
    padding: 0;
    animation: fadeIn 0.4s ease;
}

/* File Info Bar */
.file-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1.25rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.file-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.file-info-item svg,
.file-info-item i {
    color: var(--primary);
    flex-shrink: 0;
}

.file-info-item.exif-badge {
    background: var(--success-light);
    color: var(--success);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.file-info-item.exif-badge svg,
.file-info-item.exif-badge i {
    color: var(--success);
}

.file-info-item.format-badge span {
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.8rem;
}

/* Preview Section */
.preview-data-container {
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.image-preview-panel {
    max-width: 400px;
    margin: 0 auto;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.preview-header h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1rem;
    color: var(--text);
}

.preview-header h4 svg,
.preview-header h4 i {
    color: var(--primary);
}

/* Preview Tabs */
.preview-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--bg);
    padding: 0.25rem;
    border-radius: var(--radius-full);
}

.preview-tab {
    padding: 0.4rem 0.8rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
}

.preview-tab:hover {
    color: var(--text);
}

.preview-tab.active {
    background: var(--primary);
    color: white;
}

.preview-image-wrapper,
.thumbnail-wrapper {
    position: relative;
    background: repeating-conic-gradient(var(--border) 0% 25%, transparent 0% 50%) 50% / 16px 16px;
    border-radius: var(--radius-md);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: background-color var(--transition-speed);
}

.preview-image-wrapper img,
.thumbnail-wrapper img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius-sm);
}

.thumbnail-info {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Metadata Badges */
.metadata-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition-speed);
}

.metadata-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.metadata-badge.exif {
    background: var(--primary-light);
    color: var(--primary);
}

.metadata-badge.xmp {
    background: var(--purple-light);
    color: var(--purple);
}

.metadata-badge.iptc {
    background: var(--yellow-light);
    color: var(--yellow);
}

.metadata-badge.icc {
    background: var(--pink-light);
    color: var(--pink);
}

.metadata-badge.gps {
    background: var(--blue-light);
    color: var(--blue);
}

/* Toolbar */
.viewer-toolbar {
    display: flex;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    align-items: center;
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.toolbar-center {
    flex: 1;
    max-width: 300px;
}

.view-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    padding: 0.25rem;
}

.view-toggle button {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.85rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
}

.view-toggle button:hover {
    color: var(--text);
}

.view-toggle button.active {
    background: var(--bg-elevated);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-box svg,
.search-box i {
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 0.9rem;
    outline: none;
    min-width: 100px;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-count {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
}

.toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.toolbar-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.stat-item svg,
.stat-item i {
    color: var(--primary);
}

.stat-label {
    color: var(--text-muted);
}

.stat-value {
    color: var(--text);
    font-weight: 600;
}

/* Preview Panels */
.preview-panel {
    padding: 1.5rem 2rem;
    max-height: 600px;
    overflow-y: auto;
}

.preview-panel.active {
    display: block;
}

/* Summary View */
.summary-content {
    display: grid;
    gap: 1rem;
}

.summary-category {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.category-header:hover {
    background: var(--bg);
}

.category-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.category-icon.teal { background: var(--primary-light); color: var(--primary); }
.category-icon.green { background: var(--success-light); color: var(--success); }
.category-icon.blue { background: var(--blue-light); color: var(--blue); }
.category-icon.orange { background: var(--orange-light); color: var(--orange); }
.category-icon.purple { background: var(--purple-light); color: var(--purple); }
.category-icon.pink { background: var(--pink-light); color: var(--pink); }
.category-icon.yellow { background: var(--yellow-light); color: var(--yellow); }
.category-icon.red { background: var(--danger-light); color: var(--danger); }
.category-icon.gray { background: var(--gray-light); color: var(--gray); }

.category-title {
    flex: 1;
    font-weight: 600;
    color: var(--text);
}

.category-count {
    background: var(--bg);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.category-toggle {
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.category-header.collapsed .category-toggle {
    transform: rotate(-90deg);
}

.category-content {
    padding: 0 1.25rem 1rem;
}

.category-content.collapsed {
    display: none;
}

.tag-row {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-light);
    gap: 1rem;
}

.tag-row:last-child {
    border-bottom: none;
}

.tag-row.highlight {
    background: var(--exif-highlight);
    margin: 0 -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-radius: var(--radius-sm);
}

.tag-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex: 0 0 40%;
    min-width: 120px;
}

.tag-value {
    color: var(--text);
    font-size: 0.9rem;
    text-align: right;
    word-break: break-word;
}

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

.tag-value a:hover {
    text-decoration: underline;
}

.map-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.5rem;
}

/* All Tags View */
.tags-list {
    display: grid;
    gap: 0.5rem;
    background: var(--exif-bg);
    padding: 1rem;
    border-radius: var(--radius-md);
    min-height: 300px;
}

.tag-entry {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.tag-entry:hover {
    background: rgba(255,255,255,0.06);
}

.tag-entry.highlight {
    background: var(--exif-highlight);
}

.tag-index {
    color: var(--exif-line-number);
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 28px;
}

.tag-info {
    flex: 1;
    min-width: 0;
}

.tag-info-name {
    color: var(--exif-tag-name);
    font-size: 0.9rem;
    font-weight: 500;
}

.tag-info-value {
    color: var(--exif-tag-value);
    font-size: 0.85rem;
    word-break: break-word;
    opacity: 0.8;
}

.tag-category-badge {
    background: rgba(255,255,255,0.1);
    color: var(--exif-text);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
}

.tag-category-badge.exif { background: var(--primary-light); color: var(--primary); }
.tag-category-badge.xmp { background: var(--purple-light); color: var(--purple); }
.tag-category-badge.iptc { background: var(--yellow-light); color: var(--yellow); }
.tag-category-badge.icc { background: var(--pink-light); color: var(--pink); }
.tag-category-badge.gps { background: var(--blue-light); color: var(--blue); }

mark {
    background: var(--warning);
    color: #000;
    padding: 0 0.15rem;
    border-radius: 2px;
}

/* Raw View */
.raw-content {
    background: var(--exif-bg);
    color: var(--exif-text);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
}

/* No EXIF Message */
.no-exif-message {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--exif-text);
}

.no-exif-message svg,
.no-exif-message i {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.no-exif-message h3 {
    margin: 0 0 0.5rem;
    color: var(--exif-text);
}

.no-exif-message p {
    color: var(--text-muted);
    margin: 0;
}

/* Action Bar */
.action-bar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.action-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* Related Tools */
.related-tools {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.related-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
}

.related-label svg,
.related-label i {
    color: var(--primary);
}

.related-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
}

.tool-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Info Sections */
.info-sections {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
}

.info-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    color: var(--text);
    margin: 0 0 1.5rem;
}

.info-card h2 svg,
.info-card h2 i {
    color: var(--primary);
}

/* Steps List */
.steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: step;
}

.steps-list li {
    position: relative;
    padding-left: 3.5rem;
    padding-bottom: 1.25rem;
    counter-increment: step;
    color: var(--text-secondary);
    line-height: 1.6;
}

.steps-list li:not(:last-child)::after {
    content: '';
    position: absolute;
    left: calc(1rem - 1px);
    top: 2rem;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    z-index: 1;
}

/* Formats Grid */
.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.format-category {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-speed);
}

.format-category h4 {
    color: var(--primary);
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
}

.format-category p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* Metadata Types Grid */
.metadata-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.metadata-type {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.type-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.type-icon.exif { background: var(--primary-light); color: var(--primary); }
.type-icon.xmp { background: var(--purple-light); color: var(--purple); }
.type-icon.iptc { background: var(--yellow-light); color: var(--yellow); }
.type-icon.icc { background: var(--pink-light); color: var(--pink); }

.type-info h4 {
    margin: 0 0 0.25rem;
    color: var(--text);
    font-size: 1rem;
}

.type-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* FAQ */
.faq-list {
    display: grid;
    gap: 0.75rem;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-speed);
}

.faq-question {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: var(--bg);
}

.faq-question svg,
.faq-question i {
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.open .faq-question svg,
.faq-item.open .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 1.25rem 1rem;
    background: var(--bg-elevated);
    transition: background-color var(--transition-speed);
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-answer p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.faq-answer a:hover {
    text-decoration: underline;
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 10001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.toast-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-notification.success {
    background: var(--success);
    color: white;
}

.toast-notification.error {
    background: var(--danger);
    color: white;
}

/* Fullpage Overlay */
.fullpage-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.fullpage-overlay.active {
    opacity: 1;
    visibility: visible;
}

.fullpage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.fullpage-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text);
}

.fullpage-title svg {
    color: var(--primary);
}

.fullpage-controls {
    display: flex;
    gap: 0.75rem;
}

.fullpage-content {
    flex: 1;
    overflow: auto;
    padding: 2rem;
    background: var(--bg);
}

.fullpage-document {
    background: var(--exif-bg);
    padding: 0;
    border-radius: var(--radius-md);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    overflow: visible;
    transform-origin: center top;
}

.close-fullpage {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

.close-fullpage:hover {
    background: #DC2626;
}

/* Zoom Controls */
.fullpage-zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 0.25rem;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.zoom-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.zoom-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}

/* Responsive */
@media (max-width: 900px) {
    .viewer-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }
    
    .toolbar-center {
        max-width: none;
        order: 3;
    }
    
    .action-bar {
        flex-direction: column;
    }
    
    .action-group {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .tool-container {
        padding: 1rem;
    }
    
    .tool-title-row {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .tool-icon-wrapper {
        width: 56px;
        height: 56px;
    }
    
    .upload-section {
        padding: 2rem 1.5rem;
    }
    
    .upload-area {
        padding: 2rem 1.5rem;
    }
    
    .viewer-toolbar {
        padding: 1rem;
    }
    
    .stats-bar {
        gap: 1rem;
        padding: 1rem;
    }
    
    .action-bar {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .file-info-bar {
        justify-content: center;
    }
    
    .related-tools {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .related-links {
        width: 100%;
    }
    
    .tool-link {
        flex: 1;
        min-width: calc(50% - 0.375rem);
        justify-content: center;
    }
    
    .tag-row {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .tag-name {
        flex: none;
    }
    
    .tag-value {
        text-align: left;
    }
    
    .preview-data-container {
        padding: 1rem;
    }
    
    .image-preview-panel {
        max-width: 100%;
    }
    
    .metadata-types-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .tool-title {
        font-size: 1.5rem;
    }
    
    .file-info-bar {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .view-toggle {
        width: 100%;
    }
    
    .view-toggle button {
        flex: 1;
        justify-content: center;
    }
    
    .toolbar-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .stats-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .fullpage-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .fullpage-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .toast-notification {
        left: 1rem;
        right: 1rem;
        transform: translateX(0) translateY(100px);
    }
    
    .toast-notification.show {
        transform: translateX(0) translateY(0);
    }
    
    .preview-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .metadata-badges {
        padding: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Print Styles */
@media print {
    .upload-section,
    .viewer-toolbar,
    .action-bar,
    .stats-bar,
    .info-sections,
    .related-tools,
    .image-preview-panel,
    .metadata-badges {
        display: none !important;
    }
    
    .tool-main {
        box-shadow: none;
        border: none;
    }
    
    .editor-section {
        display: block !important;
    }
    
    .preview-panel {
        display: block !important;
        max-height: none !important;
    }
    
    .summary-content,
    .tags-list {
        background: white;
    }
    
    .summary-category {
        page-break-inside: avoid;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Selection */
::selection {
    background: rgba(13, 148, 136, 0.2);
    color: var(--text);
}

[data-theme="dark"] ::selection {
    background: rgba(45, 212, 191, 0.3);
}

/* ============================================
   RAW Preview - Loading & Placeholder Styles
   ============================================ */

/* Preview Loading */
.preview-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    gap: 1rem;
    position: absolute;
    inset: 0;
    background: var(--bg-elevated);
    z-index: 10;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Preview Placeholder */
.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    width: 100%;
    min-height: 200px;
    gap: 0.75rem;
}

.preview-placeholder svg {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    opacity: 0.7;
}

.placeholder-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.placeholder-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Dark mode adjustments */
[data-theme="dark"] .preview-loading {
    background: var(--bg-elevated);
}

[data-theme="dark"] .preview-placeholder {
    background: var(--bg-secondary);
}

[data-theme="dark"] .preview-placeholder svg {
    color: var(--text-muted);
}