/* =================================
   shitsurae - Image Resize & Convert Tool Styles
   ================================= */

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-primary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    z-index: 9999;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: var(--space-md);
    outline: 2px solid white;
    outline-offset: 2px;
}

:root {
    /* Colors - Light Theme (Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --bg-hover: #f3f4f6;

    --text-primary: #24292f;
    --text-secondary: #57606a;
    --text-muted: #6e7781;

    --border-primary: #d0d7de;
    --border-secondary: #d8dee4;

    /* Accent Colors */
    --accent-primary: #8250df;
    --accent-secondary: #a371f7;
    --accent-glow: rgba(130, 80, 223, 0.15);

    /* Status Colors */
    --success-bg: #e6ffec;
    --success-border: #acf2bd;
    --success-text: #1a7f37;

    --warning-bg: #fff8c5;
    --warning-border: #fbe691;
    --warning-text: #9a6700;

    --error-bg: #ffebe9;
    --error-border: #ffc1c0;
    --error-text: #cf222e;

    /* Typography */
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-hover: #30363d;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;

    --border-primary: #30363d;
    --border-secondary: #21262d;

    --accent-primary: #a371f7;
    --accent-secondary: #8250df;
    --accent-glow: rgba(163, 113, 247, 0.15);

    --success-bg: rgba(46, 160, 67, 0.15);
    --success-border: #238636;
    --success-text: #7ee787;

    --warning-bg: rgba(210, 153, 34, 0.15);
    --warning-border: #9e6a03;
    --warning-text: #e3b341;

    --error-bg: rgba(248, 81, 73, 0.15);
    --error-border: #da3633;
    --error-text: #ffa198;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

body.modal-open {
    overflow: hidden;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--space-md) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: inherit;
    text-decoration: none;
}

.logo-icon {
    width: 28px;
    height: 28px;
    display: inline-block;
    border-radius: 6px;
    object-fit: contain;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.btn-theme-toggle,
.btn-lang-toggle {
    background: transparent;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.btn-theme-toggle:hover,
.btn-lang-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.theme-icon {
    font-size: 1rem;
    line-height: 1;
}

.lang-icon {
    font-size: 0.7rem;
    font-weight: 700;
    line-height: 1;
}

/* Main Container */
.main-container {
    flex: 1;
    padding: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Notice Banner */
.notice-banner {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    color: var(--warning-text);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.notice-icon {
    font-size: 1.25rem;
}

/* Intro Section */
.intro-section {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-primary);
}

.intro-content {
    max-width: 100%;
}

.intro-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-xl);
}

.feature-list li {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Input Section */
.input-section {
    margin-bottom: var(--space-xl);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg) var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-secondary);
    min-height: auto;
}

.drop-zone:hover,
.drop-zone:focus {
    border-color: var(--accent-primary);
    background: var(--accent-glow);
}

.drop-zone.dragover {
    border-color: var(--accent-primary);
    background: var(--accent-glow);
    transform: scale(1.01);
}

.drop-zone-content {
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.drop-zone-icon {
    font-size: 2rem;
    display: block;
}

.drop-zone-text {
    font-size: 1rem;
    color: var(--text-primary);
}

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

.file-input {
    display: none;
}

/* Info Panel */
.info-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-lg);
}

.info-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

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

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

/* Preview Container */
.preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    min-height: 200px;
    max-height: 400px;
    overflow: hidden;
}

.preview-image {
    max-width: 100%;
    max-height: 360px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* Settings Section */
.settings-section {
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.settings-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

/* Resize Mode Radio */
.resize-mode {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.radio-label:hover {
    color: var(--text-primary);
}

.radio-label input[type="radio"] {
    accent-color: var(--accent-primary);
}

/* Size Inputs */
.size-inputs {
    display: flex;
    align-items: flex-end;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    flex: 1;
    min-width: 100px;
}

.input-group.full-width {
    flex-basis: 100%;
}

.input-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-with-unit {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.input-with-unit:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-with-unit input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    width: 100%;
}

.input-with-unit input:focus {
    outline: none;
}

.input-with-unit .unit {
    padding: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.875rem;
    background: var(--bg-tertiary);
    border-left: 1px solid var(--border-primary);
}

/* Lock Button */
.btn-lock {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.btn-lock:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

.btn-lock.active {
    background: var(--accent-glow);
    border-color: var(--accent-primary);
}

.lock-icon {
    font-size: 1rem;
}

/* Preset Buttons */
.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    width: 100%;
}

.btn-preset {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-preset:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-preset.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Format Selector */
.format-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.format-option {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.format-option:has(input:checked) {
    background: var(--accent-glow);
    border-color: var(--accent-primary);
}

.format-name {
    font-weight: 500;
}

/* Quality Control */
.quality-control {
    margin-bottom: var(--space-lg);
}

.quality-control label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.quality-slider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.quality-slider input[type="range"] {
    flex: 1;
    accent-color: var(--accent-primary);
    height: 6px;
}

.quality-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-primary);
    min-width: 3ch;
}

/* Background Color Control */
.bg-color-control label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.control-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.color-input-wrapper input[type="color"] {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 2px;
}

.color-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Output Preview */
.output-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.estimate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
}

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

.estimate-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.estimate-value {
    font-size: 1rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-weight: 500;
}

.estimate-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
    font-style: italic;
}

.estimate-delta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    margin-top: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    background: var(--bg-tertiary);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.estimate-delta-icon {
    font-size: 1rem;
}

.estimate-delta-text {
    font-family: var(--font-mono);
}

.estimate-delta--neutral {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border-color: var(--border-primary);
}

.estimate-delta--increase {
    color: var(--warning-text);
    background: var(--warning-bg);
    border-color: var(--warning-border);
}

.estimate-delta--decrease {
    color: var(--success-text);
    background: linear-gradient(135deg, rgba(88, 227, 255, 0.18), rgba(130, 80, 223, 0.16));
    border-color: rgba(88, 227, 255, 0.45);
}

/* Warning Area */
.warning-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.warning-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.4);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-primary);
    animation: warningFadeIn 0.3s ease-out;
}

.warning-item.error {
    background: rgba(244, 67, 54, 0.15);
    border-color: rgba(244, 67, 54, 0.4);
}

.warning-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

@keyframes warningFadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Action Bar */
.action-bar {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-secondary);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-icon {
    font-size: 1.125rem;
}

/* Result Section */
.result-section {
    margin-bottom: var(--space-2xl);
}

.result-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.result-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.result-card-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.result-ext {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    text-transform: uppercase;
}

.result-preview {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    min-height: 200px;
    max-height: 300px;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.result-image {
    max-width: 100%;
    max-height: 260px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.result-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

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

.result-reduction {
    padding: var(--space-xs) var(--space-sm);
    background: var(--success-bg);
    color: var(--success-text);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.result-reduction.increase {
    background: rgba(255, 152, 0, 0.2);
    color: #e65100;
}

.result-reduction.increase.warning {
    background: var(--error-bg);
    color: var(--error-text);
    animation: pulseWarning 1s ease-in-out 3;
}

@keyframes pulseWarning {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Download Bar */
.download-bar {
    display: flex;
    justify-content: center;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-2xl);
    background: var(--success-text);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-download:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Processing Overlay */
.processing-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.processing-content {
    background: var(--bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-primary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

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

.processing-text {
    color: var(--text-primary);
    font-size: 1rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-md) var(--space-xl);
    margin-top: auto;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-separator {
    color: var(--border-primary);
}

.btn-footer-link {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
    transition: color var(--transition-fast);
}

.btn-footer-link:hover {
    color: var(--accent-primary);
}

.btn-inline-link {
    background: none;
    border: none;
    color: var(--accent-primary);
    cursor: pointer;
    font-size: inherit;
    padding: 0;
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.btn-inline-link:hover {
    color: var(--accent-secondary);
}

.btn-privacy-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: transparent;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-privacy-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.toggle-icon {
    font-size: 0.6rem;
    transition: transform var(--transition-fast);
}

.btn-privacy-toggle.active .toggle-icon {
    transform: rotate(180deg);
}

.privacy-details {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-secondary);
    animation: slideDown 0.2s ease;
}

.privacy-details.hidden {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.privacy-details ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.privacy-details li {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.btn-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
}

.policy-section {
    margin-bottom: var(--space-lg);
}

.policy-section:last-child {
    margin-bottom: 0;
}

.policy-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.policy-section p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--space-sm) 0;
}

.policy-section ul {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.policy-section li {
    margin-bottom: var(--space-xs);
    line-height: 1.6;
}

.policy-notice {
    margin-top: var(--space-md);
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-size: 0.85rem;
}

.policy-notice p {
    margin: 0 0 var(--space-xs) 0;
    color: var(--text-primary);
}

.policy-notice p:last-child {
    margin-bottom: 0;
}

.policy-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--space-md) !important;
}

/* Toast Container */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.3s ease;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.toast.is-closing {
    opacity: 0;
}

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

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

.toast.warning {
    border-color: #ffc107;
    background: rgba(255, 193, 7, 0.15);
}

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

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

/* Accessible focus rings */
button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: var(--space-md);
        flex-direction: column;
        gap: var(--space-md);
    }

    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }

    .main-container {
        padding: var(--space-md);
    }

    .drop-zone {
        padding: var(--space-xl);
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .size-inputs {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-lock {
        align-self: center;
    }

    .format-selector {
        grid-template-columns: 1fr;
    }

    .result-comparison {
        grid-template-columns: 1fr;
    }

    .footer-content {
        display: flex;
        flex-direction: column;
        gap: var(--space-md);
    }

    .footer-info {
        text-align: left;
        flex-wrap: wrap;
        row-gap: var(--space-xs);
    }

    .footer-separator {
        display: none;
    }

    .footer-main {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .drop-zone-icon {
        font-size: 2rem;
    }

    .info-grid {
        grid-template-columns: 1fr 1fr;
    }

    .preset-buttons {
        justify-content: center;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

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

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