/* ========================================
   AI Ready File Converter
   Modern glassmorphism design with theme support
   ======================================== */

/* ========================================
   Theme Variables
   ======================================== */

:root {
    /* Shared values */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* State colors (shared) */
    --success: #34d399;
    --success-dim: rgba(52, 211, 153, 0.12);
    --error: #f87171;
    --error-dim: rgba(248, 113, 113, 0.12);
    --warning: #fbbf24;
}

/* ========================================
   Dark Theme (Default)
   ======================================== */

[data-theme="dark"] {
    --bg-base: #0a0d1a;
    --bg-gradient-start: #0c1020;
    --bg-gradient-end: #151a30;
    
    /* Glass colors */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-bg-elevated: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --glass-blur: 20px;
    
    /* Accent colors - cyan theme */
    --accent-primary: #0cc0df;
    --accent-secondary: #0aadc9;
    --accent-tertiary: #2ed0ef;
    --accent-purple: #0cc0df;
    --accent-magenta: #0cc0df;
    --accent-glow: rgba(12, 192, 223, 0.25);
    --accent-dim: rgba(12, 192, 223, 0.08);
    --gradient-accent: linear-gradient(135deg, #0cc0df 0%, #0cc0df 100%);
    
    /* Text colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.04);
    --border-default: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(12, 192, 223, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(12, 192, 223, 0.2);
    --shadow-glow-purple: 0 0 40px rgba(12, 192, 223, 0.15);
    
    /* Ambient orbs */
    --orb-1: rgba(12, 192, 223, 0.1);
    --orb-2: rgba(12, 192, 223, 0.08);
    --orb-3: rgba(12, 192, 223, 0.06);
    
    /* Button text on accent */
    --btn-primary-text: #021a20;
}

/* ========================================
   Light Theme
   ======================================== */

[data-theme="light"] {
    --bg-base: #f5f8fc;
    --bg-gradient-start: #eef3fa;
    --bg-gradient-end: #e0eaf5;
    
    /* Glass colors */
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-bg-hover: rgba(255, 255, 255, 0.8);
    --glass-bg-elevated: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.06);
    --glass-border-hover: rgba(0, 0, 0, 0.1);
    --glass-blur: 20px;
    
    /* Accent colors - cyan theme for light mode */
    --accent-primary: #0aa8c2;
    --accent-secondary: #0991a8;
    --accent-tertiary: #0cc0df;
    --accent-purple: #0aa8c2;
    --accent-magenta: #0aa8c2;
    --accent-glow: rgba(12, 192, 223, 0.2);
    --accent-dim: rgba(12, 192, 223, 0.08);
    --gradient-accent: linear-gradient(135deg, #0cc0df 0%, #0cc0df 100%);
    
    /* Text colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Borders */
    --border-subtle: rgba(0, 0, 0, 0.04);
    --border-default: rgba(0, 0, 0, 0.08);
    --border-accent: rgba(12, 192, 223, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(12, 192, 223, 0.15);
    --shadow-glow-purple: 0 0 40px rgba(12, 192, 223, 0.1);
    
    /* Ambient orbs */
    --orb-1: rgba(12, 192, 223, 0.08);
    --orb-2: rgba(12, 192, 223, 0.06);
    --orb-3: rgba(12, 192, 223, 0.04);
    
    /* Button text on accent */
    --btn-primary-text: #ffffff;
    
    /* State colors adjusted for light */
    --success: #10b981;
    --success-dim: rgba(16, 185, 129, 0.1);
    --error: #ef4444;
    --error-dim: rgba(239, 68, 68, 0.1);
}

/* ========================================
   Reset & Base
   ======================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
    
    /* Background */
    background: var(--bg-base);
    background-image: 
        radial-gradient(ellipse 80% 50% at 20% -20%, var(--orb-1), transparent),
        radial-gradient(ellipse 60% 40% at 100% 30%, var(--orb-2), transparent),
        radial-gradient(ellipse 50% 40% at 80% 100%, var(--orb-3), transparent),
        radial-gradient(ellipse 40% 30% at 0% 80%, var(--orb-1), transparent);
    background-attachment: fixed;
}

/* Ambient glow orbs */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    pointer-events: none;
    z-index: -1;
    transition: opacity var(--transition-slow);
}

body::before {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--orb-1) 0%, transparent 70%);
    top: -200px;
    left: -100px;
}

body::after {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--orb-2) 0%, transparent 70%);
    bottom: -100px;
    right: -100px;
}

/* ========================================
   Layout
   ======================================== */

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

/* ========================================
   Header
   ======================================== */

.header {
    text-align: center;
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-lg);
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.9;
}

/* ========================================
   Theme Toggle
   ======================================== */

.theme-toggle {
    position: absolute;
    top: var(--space-lg);
    right: 0;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.theme-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 100px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-btn:hover {
    color: var(--text-secondary);
    background: var(--glass-bg-hover);
}

.theme-btn.active {
    background: var(--glass-bg-elevated);
    color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.theme-btn svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   Glass Card Base
   ======================================== */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ========================================
   Drop Zone
   ======================================== */

.upload-section {
    width: 100%;
}

.drop-zone {
    position: relative;
    border: 1px dashed var(--glass-border-hover);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.drop-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent-dim) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.drop-zone:hover {
    border-color: var(--border-accent);
    background: var(--glass-bg-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-2px);
}

.drop-zone:hover::before {
    opacity: 1;
}

.drop-zone.dragover {
    border-color: var(--accent-primary);
    border-style: solid;
    background: var(--glass-bg-elevated);
    transform: scale(1.01) translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 60px var(--accent-glow), 0 0 80px var(--shadow-glow-purple);
}

.drop-zone.dragover::before {
    opacity: 1;
    background: radial-gradient(ellipse at 30% 30%, var(--accent-glow) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 70%, rgba(12, 192, 223, 0.15) 0%, transparent 50%);
}

.drop-zone-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.drop-icon {
    color: var(--accent-primary);
    opacity: 0.9;
    transition: all var(--transition-base);
}

.drop-icon svg {
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.drop-zone:hover .drop-icon {
    transform: translateY(-6px);
}

.drop-zone:hover .drop-icon svg {
    filter: drop-shadow(0 0 12px var(--accent-glow)) drop-shadow(0 0 20px var(--shadow-glow-purple));
}

.drop-zone-content h2 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
}

.drop-zone-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.supported-formats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-sm);
}

.format-tag {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 6px 12px;
    background: var(--glass-bg-elevated);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: all var(--transition-fast);
}

.format-tag:hover {
    background: var(--glass-bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ========================================
   File Queue
   ======================================== */

.queue-section {
    display: none;
}

.queue-section.visible {
    display: block;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.queue-header, .results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.queue-header h3, .results-header h3 {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.file-list, .results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.file-item:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.file-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg-elevated);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.file-icon svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

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

.file-name {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.file-size {
    font-family: var(--font-mono);
}

.file-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Format Toggle */
.format-toggle {
    display: flex;
    background: var(--glass-bg-elevated);
    border-radius: 100px;
    padding: 3px;
    border: 1px solid var(--glass-border);
}

.format-btn {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 6px 12px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 100px;
    transition: all var(--transition-fast);
    text-transform: uppercase;
}

.format-btn:hover {
    color: var(--text-secondary);
}

.format-btn.active {
    background: var(--gradient-accent);
    color: var(--btn-primary-text);
    box-shadow: 0 2px 12px var(--accent-glow);
}

/* Status Indicator */
.file-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.uploaded {
    background: var(--accent-primary);
    box-shadow: 0 0 12px var(--accent-glow);
}

.status-dot.converting {
    background: var(--warning);
    box-shadow: 0 0 12px rgba(251, 191, 36, 0.5);
    animation: pulse 1.2s ease-in-out infinite;
}

.status-dot.converted {
    background: var(--success);
    box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.status-dot.error {
    background: var(--error);
    box-shadow: 0 0 12px rgba(248, 113, 113, 0.5);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

/* Delete button */
.btn-delete {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-delete:hover {
    background: var(--error-dim);
    color: var(--error);
}

/* Queue Actions */
.queue-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--space-lg);
}

/* Output Indicator */
.output-indicator {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    margin-top: var(--space-md);
    background: var(--accent-dim);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 500;
}

.output-indicator.visible {
    display: flex;
    animation: fadeIn var(--transition-base);
}

.output-indicator svg {
    flex-shrink: 0;
}

/* ========================================
   Results Section
   ======================================== */

.results-section {
    display: none;
}

.results-section.visible {
    display: block;
    animation: fadeIn var(--transition-base);
}

.result-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--success-dim);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(52, 211, 153, 0.15);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.result-item:hover {
    background: rgba(52, 211, 153, 0.15);
    border-color: rgba(52, 211, 153, 0.25);
    transform: translateY(-1px);
}

.result-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.result-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

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

.result-name {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.result-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.result-actions {
    display: flex;
    gap: var(--space-sm);
}

/* ZIP Result Item */
.result-item-zip {
    background: var(--accent-dim);
    border-color: var(--border-accent);
}

.result-item-zip:hover {
    background: rgba(20, 184, 166, 0.12);
    border-color: var(--accent-primary);
}

.result-item-zip .result-icon,
.zip-icon {
    background: var(--accent-primary);
}

/* ZIP Contents List */
.zip-contents {
    margin-top: var(--space-sm);
    padding: var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
}

.zip-contents-header {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-subtle);
}

.zip-content-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.zip-content-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.zip-content-name {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 10px 18px;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--btn-primary-text);
    box-shadow: 0 4px 20px var(--accent-glow), 0 4px 20px var(--shadow-glow-purple);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 30px var(--accent-glow), 0 6px 30px var(--shadow-glow-purple);
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 12px var(--accent-glow);
    filter: brightness(1);
}

.btn-secondary {
    background: var(--glass-bg-elevated);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--glass-bg-hover);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.btn-large {
    padding: 14px 32px;
    font-size: 1rem;
    border-radius: 100px;
}

.btn-small {
    padding: 6px 14px;
    font-size: 0.75rem;
}

/* Loading state */
.btn.loading {
    pointer-events: none;
}

.btn.loading span {
    opacity: 0;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ========================================
   Modal
   ======================================== */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
}

.modal.visible {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-fast);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

[data-theme="light"] .modal-backdrop {
    background: rgba(0, 0, 0, 0.4);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    background: var(--glass-bg-elevated);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--glass-border-hover);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.modal-header h4 {
    font-size: 1rem;
    font-weight: 500;
}

.modal-close {
    width: 36px;
    height: 36px;
    padding: 0;
}

.modal-body {
    flex: 1;
    padding: var(--space-lg);
    overflow: auto;
    background: var(--glass-bg);
}

.modal-body pre {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
}

.modal-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    background: var(--glass-bg);
}

/* Copy button success state */
.btn.copied {
    background: var(--success-dim);
    border-color: var(--success);
    color: var(--success);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    text-align: center;
    padding: var(--space-xl) 0;
    margin-top: auto;
}

.footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.security-note {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    padding: 8px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

.security-note svg {
    color: var(--success);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 640px) {
    .container {
        padding: var(--space-md);
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .theme-toggle {
        position: static;
        margin: 0 auto var(--space-md);
    }
    
    .drop-zone {
        padding: var(--space-xl);
    }
    
    .file-item {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    
    .file-info {
        flex-basis: calc(100% - 60px);
    }
    
    .file-actions {
        width: 100%;
        justify-content: space-between;
        padding-left: 60px;
    }
    
    .format-toggle {
        flex-grow: 1;
        justify-content: center;
    }
}

/* ========================================
   Scrollbar
   ======================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--glass-bg-elevated);
    border-radius: 100px;
    border: 2px solid transparent;
}

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

/* ========================================
   Selection
   ======================================== */

::selection {
    background: var(--accent-glow);
    color: var(--text-primary);
}

/* ========================================
   Circuit Pattern Background
   ======================================== */

.container::before {
    content: '';
    position: fixed;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
    background-image: 
        linear-gradient(90deg, var(--accent-primary) 1px, transparent 1px),
        linear-gradient(var(--accent-primary) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: linear-gradient(135deg, transparent 30%, black 70%);
    -webkit-mask-image: linear-gradient(135deg, transparent 30%, black 70%);
}