:root {
    /* Retro-modern technical color palette - Dark Mode */
    --primary-color: #00d4ff;
    --primary-hover: #00b8e6;
    --primary-glow: rgba(0, 212, 255, 0.4);
    --success-color: #00ff9f;
    --success-glow: rgba(0, 255, 159, 0.3);
    --error-color: #ff3366;
    --warning-color: #ffaa00;
    --bg-color: #0a0e27;
    --bg-secondary: #111827;
    --card-bg: #1a1f3a;
    --card-border: #2a3f5f;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-accent: #00d4ff;
    --border-color: #2a3f5f;
    --code-bg: #0f1629;
    --grid-color: rgba(0, 212, 255, 0.1);
    --scanline-color: rgba(0, 0, 0, 0.1);
    --scanline-opacity: 0.05;

    /* Responsive spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Breakpoints */
    --mobile-max: 767px;
    --tablet-min: 768px;
    --desktop-min: 1024px;
    --large-desktop-min: 1200px;

    /* Typography */
    --font-mono: 'Courier New', 'Consolas', 'Monaco', monospace;
    --font-xs: 0.7rem;
    --font-sm: 0.75rem;
    --font-base: 0.8rem;
    --font-md: 0.85rem;
    --font-lg: 0.9rem;
    --font-xl: 1rem;
    --font-2xl: 1.1rem;
    --font-3xl: 1.4rem;
    --font-4xl: 1.5rem;
    --font-5xl: 1.8rem;
    --font-6xl: 2rem;
    --font-7xl: 2.25rem;
    --font-code: 13px;
    --font-input: 14px;

    /* Border Radius */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --radius-2xl: 16px;
    --radius-circle: 50%;

    /* Z-Index Layers */
    --z-skip-link: 1000;
    --z-overlay: 1000;
    --z-modal: 2000;
    --z-scanlines: 9999;

    /* Opacity Levels */
    --opacity-disabled: 0.6;
    --opacity-subtle: 0.3;
    --opacity-medium: 0.5;
    --opacity-strong: 0.8;
    --opacity-hover: 0.85;
    --opacity-active: 0.9;
    --opacity-near-full: 0.95;

    /* Transitions */
    --transition-fast: 0.3s;
    --transition-base: 0.5s;
    --transition-slow: 0.8s;
    --transition-loading: 1.5s;
    --transition-scanline: 8s;
    --transition-instant: 0.01ms;

    /* Layout */
    --grid-background-size: 20px;
    --label-width: 200px;
    --touch-target-min: 44px;
    --container-sm: 600px;
    --container-md: 700px;
    --container-lg: 900px;

    /* Component Sizes */
    --corner-accent-lg: 20px;
    --corner-accent-sm: 15px;
    --spinner-size: 50px;
    --spinner-border: 3px;
    --camera-min-height-sm: 300px;
    --camera-min-height-md: 400px;
}

/* Light Mode - System Preference */
@media (prefers-color-scheme: light) {
    :root {
        /* Professional light color palette */
        --primary-color: #0066cc;
        --primary-hover: #0052a3;
        --primary-glow: rgba(0, 102, 204, 0.3);
        --success-color: #00a86b;
        --success-glow: rgba(0, 168, 107, 0.2);
        --error-color: #d32f2f;
        --warning-color: #e65100;
        --bg-color: #f5f7fa;
        --bg-secondary: #e8ecf1;
        --card-bg: #ffffff;
        --card-border: #cbd5e1;
        --text-primary: #1e293b;
        --text-secondary: #64748b;
        --text-accent: #0066cc;
        --border-color: #cbd5e1;
        --code-bg: #f1f5f9;
        --grid-color: rgba(0, 102, 204, 0.08);
        --scanline-color: rgba(0, 102, 204, 0.02);
        --scanline-opacity: 0.03;
    }

    /* Adjust shadows and glows for light mode */
    h1 {
        text-shadow: 0 0 15px var(--primary-glow);
    }

    .input-section,
    .result-card {
        box-shadow:
            0 2px 8px rgba(0, 0, 0, 0.08),
            0 0 0 1px rgba(0, 102, 204, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.8);
    }

    .btn-primary,
    .btn-secondary {
        color: #ffffff;
    }

    .btn-primary {
        box-shadow: 0 2px 8px var(--primary-glow);
    }

    .btn-primary:hover {
        box-shadow: 0 4px 12px var(--primary-glow);
    }

    .btn-secondary {
        box-shadow: 0 2px 8px var(--success-glow);
    }

    .btn-secondary:hover {
        box-shadow: 0 4px 12px var(--success-glow);
    }

    textarea {
        box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    }

    textarea:focus {
        box-shadow:
            inset 0 1px 3px rgba(0, 0, 0, 0.1),
            0 0 0 3px var(--primary-glow);
    }

    .result-value,
    .array-entry,
    .object-entry {
        box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.08);
        border-color: #e2e8f0;
    }

    .loading-overlay {
        background-color: rgba(245, 247, 250, 0.95);
    }

    .camera-modal {
        background-color: rgba(255, 255, 255, 0.9);
    }

    .camera-modal-content {
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    }

    .tab.active {
        box-shadow: 0 -2px 8px rgba(0, 102, 204, 0.15);
    }

    /* Button contrast improvements for light mode */
    .copy-btn {
        background-color: rgba(0, 102, 204, 0.15);
        opacity: 0.9;
    }

    .copy-btn:hover {
        opacity: 1;
        background-color: rgba(0, 102, 204, 0.25);
    }

    .analyze-btn {
        background-color: rgba(0, 168, 107, 0.15);
        opacity: 0.9;
    }

    .analyze-btn:hover {
        opacity: 1;
        background-color: rgba(0, 168, 107, 0.25);
    }
}

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

/* Accessibility - Skip to main content */
.skip-link {
    position: absolute;
    top: -40px;
    left: 8px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: var(--z-skip-link);
}

.skip-link:focus {
    top: 8px;
}

/* Visually hidden for screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body {
    font-family: var(--font-mono);
    background-color: var(--bg-color);
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: var(--grid-background-size) var(--grid-background-size);
    color: var(--text-primary);
    line-height: 1.6;
    padding: var(--spacing-md);
    min-height: 100vh;
    position: relative;
}

/* Retro scanline effect */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-scanlines);
    background: linear-gradient(
        to bottom,
        transparent 50%,
        var(--scanline-color) 50%
    );
    background-size: 100% 4px;
    animation: scanline var(--transition-scanline) linear infinite;
    opacity: var(--scanline-opacity);
}

@keyframes scanline {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 0 100%;
    }
}

/* Mobile styles */
@media (max-width: 767px) {
    body {
        padding: var(--spacing-sm);
    }

    header {
        margin-bottom: var(--spacing-sm);
    }

    .input-section {
        margin-bottom: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .results-section {
        margin-top: 0;
    }

    h1 {
        font-size: var(--font-4xl);
        margin-bottom: var(--spacing-xs);
    }

    h1 img {
        max-width: 15ch;
        width: 15ch;
    }

    .subtitle {
        font-size: var(--font-base);
    }
}

/* Mobile-first container */
.container {
    max-width: 100%;
    margin: 0 auto;
}

/* Header - Mobile */
header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

h1 {
    font-size: var(--font-5xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    text-shadow: 0 0 20px var(--primary-glow);
}

h1 a {
    text-decoration: none;
    color: inherit;
    display: inline-block;
    cursor: pointer;
}

h1 a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
    border-radius: var(--radius-xl);
}

h1 img {
    width: 15ch;
    max-width: 15ch;
    height: auto;
    display: block;
    margin: 0 auto;
}

.subtitle {
    color: var(--text-accent);
    font-size: var(--font-lg);
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Input Section - Mobile */
.input-section {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    box-shadow:
        0 0 20px rgba(0, 212, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

/* Corner accents for input section */
.input-section::before,
.input-section::after {
    content: '';
    position: absolute;
    width: var(--corner-accent-lg);
    height: var(--corner-accent-lg);
    border: 2px solid var(--primary-color);
    opacity: var(--opacity-medium);
}

.input-section::before {
    top: -1px;
    left: -1px;
    border-right: none;
    border-bottom: none;
}

.input-section::after {
    bottom: -1px;
    right: -1px;
    border-left: none;
    border-top: none;
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    color: var(--text-accent);
    font-size: var(--font-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Mobile textarea - single line by default */
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--code-bg);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-input);
    resize: vertical;
    transition: all var(--transition-fast) ease;
    min-height: var(--touch-target-min);
    max-height: 200px;
    overflow-y: auto;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Expand textarea on focus for mobile */
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.3),
        0 0 0 2px var(--primary-glow),
        0 0 20px var(--primary-glow);
    min-height: 120px;
}

/* Button group */
.button-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* Primary button */
.btn-primary {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--bg-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-input);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    min-height: var(--touch-target-min);
    box-shadow: 0 0 20px var(--primary-glow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-base);
}

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

.btn-primary:hover {
    box-shadow: 0 0 30px var(--primary-glow);
    transform: translateY(-2px);
}

.btn-primary:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

.btn-primary:disabled {
    background: var(--border-color);
    border-color: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: var(--opacity-disabled);
    box-shadow: none;
}

.btn-primary:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Secondary button (camera) */
.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--success-color), #00cc88);
    color: var(--bg-color);
    border: 1px solid var(--success-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-input);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
    box-shadow: 0 0 20px var(--success-glow);
}

.btn-secondary:hover {
    box-shadow: 0 0 30px var(--success-glow);
    transform: translateY(-2px);
}

.btn-secondary:focus {
    outline: 2px solid var(--success-color);
    outline-offset: 2px;
}

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

.btn-secondary svg {
    flex-shrink: 0;
}

/* Results Section */
.results-section {
    margin-top: var(--spacing-lg);
}

.results-section h2 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-3xl);
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
}

#results-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Result Card - Mobile */
.result-card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    border-left: 3px solid var(--primary-color);
    box-shadow:
        0 0 20px rgba(0, 212, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    word-break: break-word;
    overflow-wrap: break-word;
    position: relative;
}

/* Corner accents for result cards */
.result-card::before,
.result-card::after {
    content: '';
    position: absolute;
    width: var(--corner-accent-sm);
    height: var(--corner-accent-sm);
    border: 1px solid var(--primary-color);
    opacity: var(--opacity-subtle);
}

.result-card::before {
    top: -1px;
    right: -1px;
    border-left: none;
    border-bottom: none;
}

.result-card::after {
    bottom: -1px;
    left: 2px;
    border-right: none;
    border-top: none;
}

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

.result-title {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid;
}

.badge-success {
    background-color: rgba(0, 255, 159, 0.1);
    color: var(--success-color);
    border-color: var(--success-color);
    box-shadow: 0 0 10px var(--success-glow);
}

.badge-warning {
    background-color: rgba(255, 170, 0, 0.1);
    color: var(--warning-color);
    border-color: var(--warning-color);
    box-shadow: 0 0 10px rgba(255, 170, 0, 0.3);
}

.badge-error {
    background-color: rgba(255, 51, 102, 0.1);
    color: var(--error-color);
    border-color: var(--error-color);
    box-shadow: 0 0 10px rgba(255, 51, 102, 0.3);
}

.result-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.result-label {
    font-weight: 700;
    color: var(--text-accent);
    font-size: var(--font-sm);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: var(--opacity-strong);
}

.result-value {
    position: relative;
    padding: var(--spacing-xs) calc(var(--spacing-sm) + 4ch) var(--spacing-xs) var(--spacing-sm);
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-code);
    word-break: break-all;
    white-space: pre-wrap;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

.result-value.has-two-buttons,
.array-entry.has-two-buttons,
.object-entry.has-two-buttons {
    padding-right: calc(var(--spacing-sm) + 8ch);
}

.copy-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    padding: 4px 8px;
    background-color: rgba(0, 212, 255, 0.25);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    opacity: var(--opacity-hover);
    transition: all var(--transition-fast) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    min-width: 32px;
}

.copy-btn svg {
    display: block;
}

.copy-btn:hover {
    opacity: 1;
    background-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 0 10px var(--primary-glow);
}

.copy-btn.copied {
    background-color: rgba(0, 255, 159, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
    box-shadow: 0 0 10px var(--success-glow);
}

.copy-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Analysis button styles */
.analyze-btn {
    position: absolute;
    top: 2px;
    right: 38px; /* Position to the left of copy button */
    padding: 4px 8px;
    background-color: rgba(0, 255, 159, 0.25);
    color: var(--success-color);
    border: 1px solid var(--success-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    opacity: var(--opacity-hover);
    transition: all var(--transition-fast) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    min-width: 32px;
    text-decoration: none; /* Remove underline for links */
}

.analyze-btn svg {
    display: block;
}

.analyze-btn:hover {
    opacity: 1;
    background-color: rgba(0, 255, 159, 0.3);
    box-shadow: 0 0 10px var(--success-glow);
}

.analyze-btn:focus {
    outline: 2px solid var(--success-color);
    outline-offset: 2px;
}

.result-value.json {
    white-space: pre;
    overflow-x: auto;
}

.result-value.array-list {
    padding: 2px 0 0 2px;
    background-color: transparent;
}

.array-entry {
    position: relative;
    padding: var(--spacing-xs) calc(var(--spacing-sm) + 4ch) var(--spacing-xs) var(--spacing-sm);
    background-color: var(--code-bg);
    font-family: var(--font-mono);
    font-size: var(--font-code);
    word-break: break-all;
    white-space: pre-wrap;
}

.array-divider {
    margin: 0 3px;
    border: none;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.result-value.object-list {
    padding: 2px 0 0 2px;
    background-color: transparent;
}

.object-entry {
    position: relative;
    padding: var(--spacing-xs) calc(var(--spacing-sm) + 4ch) var(--spacing-xs) var(--spacing-sm);
    background-color: var(--code-bg);
    font-family: var(--font-mono);
    font-size: var(--font-code);
    word-break: break-all;
    white-space: pre-wrap;
}

.object-key {
    font-weight: 700;
    color: var(--primary-color);
}

.object-value {
    color: var(--text-primary);
}

.object-divider {
    margin: 0 3px;
    border: none;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-secondary);
}

.empty-state p {
    font-size: var(--font-xl);
}

/* Tablet styles (768px and up) */
@media (min-width: 768px) {
    body {
        padding: var(--spacing-lg);
    }

    .container {
        max-width: var(--container-lg);
    }

    h1 {
        font-size: var(--font-6xl);
    }

    h1 img {
        max-width: 15ch;
        width: 15ch;
    }

    .subtitle {
        font-size: var(--font-xl);
    }

    .input-section {
        padding: var(--spacing-lg);
    }

    textarea {
        min-height: 5em;
    }

    textarea:focus {
        min-height: 150px;
    }

    .result-item {
        display: grid;
        grid-template-columns: var(--label-width) 1fr;
        gap: var(--spacing-md);
        align-items: start;
    }

    .result-label {
        text-align: left;
        padding-top: var(--spacing-sm);
    }
}

/* Desktop styles (1024px and up) - Compact layout */
@media (min-width: 1024px) {
    body {
        padding: var(--spacing-md);
    }

    h1 {
        font-size: var(--font-7xl);
    }

    h1 img {
        max-width: 15ch;
        width: 15ch;
    }

    .subtitle {
        font-size: var(--font-xl);
    }

    header {
        margin-bottom: var(--spacing-xl);
    }

    .input-section {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-xl);
    }

    textarea {
        min-height: 7em;
    }

    textarea:focus {
        min-height: 150px;
    }

    .results-section {
        margin-top: var(--spacing-xl);
    }

    .results-section h2 {
        font-size: var(--font-5xl);
        margin-bottom: var(--spacing-lg);
    }

    #results-container {
        gap: var(--spacing-md);
    }

    .result-card {
        padding: var(--spacing-lg);
    }
}

/* Large desktop (1200px and up) - Full width cards */
@media (min-width: 1200px) {
    .result-card {
        padding: var(--spacing-lg);
    }
}

/* Accessibility - Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: var(--transition-instant) !important;
        animation-iteration-count: 1 !important;
        transition-duration: var(--transition-instant) !important;
    }

    .scanlines {
        display: none;
    }

    .btn-primary::before {
        display: none;
    }
}

/* Accessibility - High contrast */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #00ffff;
        --success-color: #00ff00;
        --error-color: #ff0000;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --border-color: #00ffff;
    }

    .result-card,
    .input-section {
        border: 2px solid var(--border-color);
    }
}

/* Tab Navigation */
.tabs-container {
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs {
    display: flex;
    gap: 0;
    min-width: min-content;
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: var(--font-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    white-space: nowrap;
    min-height: var(--touch-target-min);
    margin-right: 2px;
}

.tab:hover {
    color: var(--primary-color);
    background-color: rgba(0, 212, 255, 0.05);
}

.tab.active {
    color: var(--primary-color);
    background: var(--card-bg);
    border-color: var(--card-border);
    border-bottom: 2px solid var(--primary-color);
    box-shadow: 0 -2px 10px rgba(0, 212, 255, 0.2);
}

.tab:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Focus styles for keyboard navigation */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Ensure focus styles are visible */
button:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading States */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(10, 14, 39, var(--opacity-near-full));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: var(--z-overlay);
    backdrop-filter: blur(4px);
}

.loading-spinner {
    width: var(--spinner-size);
    height: var(--spinner-size);
    border: var(--spinner-border) solid transparent;
    border-top: var(--spinner-border) solid var(--primary-color);
    border-right: var(--spinner-border) solid var(--primary-color);
    border-radius: var(--radius-circle);
    animation: spin var(--transition-slow) linear infinite;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 0 20px var(--primary-glow);
}

.loading-text {
    color: var(--primary-color);
    font-family: var(--font-mono);
    font-size: var(--font-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

/* Skeleton loading for results */
.skeleton-loader {
    background: linear-gradient(90deg, var(--card-bg) 25%, rgba(0, 212, 255, 0.1) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: loading var(--transition-loading) infinite;
    border-radius: var(--radius-sm);
}

.skeleton-card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    border-left: 3px solid var(--primary-color);
    box-shadow:
        0 0 20px rgba(0, 212, 255, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.skeleton-title {
    height: 20px;
    width: 150px;
    border-radius: var(--radius-md);
}

.skeleton-badge {
    height: 20px;
    width: 60px;
    border-radius: var(--radius-2xl);
}

.skeleton-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.skeleton-label {
    height: 16px;
    width: 100px;
    border-radius: var(--radius-md);
}

.skeleton-value {
    height: 40px;
    width: 100%;
    border-radius: var(--radius-lg);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Tablet and desktop adjustments for loading states */
@media (min-width: 768px) {
    .skeleton-item {
        display: grid;
        grid-template-columns: var(--label-width) 1fr;
        gap: var(--spacing-md);
        align-items: start;
    }

    .skeleton-label {
        height: 20px;
        width: 180px;
    }
}

/* Camera Scanner Modal */
.camera-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, var(--opacity-near-full));
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    backdrop-filter: blur(4px);
}

.camera-modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    max-width: var(--container-sm);
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
}

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

.camera-modal-header h2 {
    font-family: var(--font-mono);
    font-size: var(--font-xl);
    font-weight: 700;
    margin: 0;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.camera-close-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast) ease;
}

.camera-close-btn:hover {
    background-color: rgba(255, 51, 102, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

.camera-close-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.camera-modal-body {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: auto;
}

.camera-reader {
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background-color: #000;
    min-height: var(--camera-min-height-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.camera-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-align: center;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: var(--font-base);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.camera-status.success {
    background-color: rgba(0, 255, 159, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
    box-shadow: 0 0 10px var(--success-glow);
}

.camera-status.error {
    background-color: rgba(255, 51, 102, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
    box-shadow: 0 0 10px rgba(255, 51, 102, 0.3);
}

/* Tablet and desktop adjustments for camera modal */
@media (min-width: 768px) {
    .camera-modal-content {
        max-width: var(--container-md);
    }

    .camera-modal-header h2 {
        font-size: var(--font-3xl);
    }

    .camera-reader {
        min-height: var(--camera-min-height-md);
    }
}