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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-tertiary: #ececf1;
    --bg-hover: #e3e3e8;
    --text-primary: #0d0d0d;
    --text-secondary: #676767;
    --text-tertiary: #8e8ea0;
    --border-color: #d9d9e3;
    --accent-color: #10a37f;
    --accent-hover: #0d8c6d;
    --danger-color: #ef4444;
    --success-color: #10a37f;
    --add-bg: rgba(16, 163, 127, 0.1);
    --add-border: rgba(16, 163, 127, 0.3);
    --remove-bg: rgba(239, 68, 68, 0.1);
    --remove-border: rgba(239, 68, 68, 0.3);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --sidebar-width: 300px;
}

[data-theme="dark"] {
    --bg-primary: #2d333a;
    --bg-secondary: #212529;
    --bg-tertiary: #343a40;
    --bg-hover: #3d444b;
    --text-primary: #ececf1;
    --text-secondary: #c5c5d2;
    --text-tertiary: #8e8ea0;
    --border-color: #4d5358;
    --add-bg: rgba(16, 163, 127, 0.2);
    --add-border: rgba(16, 163, 127, 0.4);
    --remove-bg: rgba(239, 68, 68, 0.2);
    --remove-border: rgba(239, 68, 68, 0.4);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    transition: background 0.2s ease, color 0.2s ease;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.sidebar.collapsed {
    width: 0;
    min-width: 0;
    border-right: none;
    overflow: hidden;
    padding: 0;
}

.sidebar.collapsed .logo-section {
    opacity: 0;
    visibility: hidden;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

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

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.logo-section {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
}

.logo span {
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-color);
    flex-shrink: 0;
    stroke-width: 2.5;
}

.sidebar-toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
    background: var(--bg-secondary);
    color: var(--accent-color);
}

.sidebar-toggle-btn svg {
    width: 20px;
    height: 20px;
}

.sidebar.collapsed .sidebar-toggle-btn svg {
    transform: rotate(180deg);
}

.sidebar-open-btn {
    position: absolute;
    top: 16px;
    left: 12px;
    z-index: 100;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.sidebar-open-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.sidebar-open-btn svg {
    width: 20px;
    height: 20px;
}

.sidebar-section {
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

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

.section-title {
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-icon {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
    flex-shrink: 0;
    stroke-width: 2;
    transition: color 0.2s ease;
}

.section-header:hover .section-icon {
    color: var(--accent-color);
}

.section-toggle {
    transition: transform 0.2s ease;
}

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

.section-content {
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.section-content.collapsed {
    max-height: 0;
    opacity: 0;
}

.settings-form {
    padding: 0 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-group input, .input-group textarea {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
    font-family: inherit;
}

.input-group textarea {
    resize: vertical;
    min-height: 60px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    line-height: 1.5;
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* Custom resize handle for WebKit browsers (Chrome, Safari, Edge) */
.input-group textarea::-webkit-resizer {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath stroke='%238e8ea0' stroke-width='1.5' stroke-linecap='round' d='M13 13L13 9M13 13L9 13M13 5L13 1M13 5L9 5M5 13L1 13M5 13L5 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: bottom 4px right 4px;
    background-size: 14px 14px;
    border-radius: 0 0 6px 0;
    cursor: ns-resize;
    transition: opacity 0.2s ease;
}

.input-group textarea::-webkit-resizer:hover {
    opacity: 0.7;
}

/* Dark theme resize handle */
[data-theme="dark"] .input-group textarea::-webkit-resizer {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath stroke='%23c5c5d2' stroke-width='1.5' stroke-linecap='round' d='M13 13L13 9M13 13L9 13M13 5L13 1M13 5L9 5M5 13L1 13M5 13L5 9'/%3E%3C/svg%3E");
}

.input-group input:focus, .input-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

.settings-select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
    font-family: inherit;
    cursor: pointer;
    width: 100%;
}

.settings-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

.settings-select:hover {
    border-color: var(--accent-hover);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

.input-hint {
    font-size: 11px;
    color: var(--text-tertiary);
    line-height: 1.4;
    margin-top: 2px;
}

/* Sliders */
.slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.slider-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.slider-value {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-color);
    min-width: 30px;
    text-align: right;
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(16, 163, 127, 0.2);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(16, 163, 127, 0.2);
}

.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

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

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

.btn-secondary:hover {
    background: var(--bg-hover);
}

.template-list {
    padding: 0 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.template-item {
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
}

.template-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-color);
}

.history-list {
    padding: 0 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 13px;
}

.history-item:hover {
    background: var(--bg-hover);
}

.history-content {
    flex: 1;
    cursor: pointer;
    min-width: 0;
}

.history-time {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.history-preview {
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-delete-btn {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
    padding: 0;
}

.history-delete-btn:hover {
    background: var(--danger-color);
    color: white;
}

.history-delete-btn svg {
    width: 16px;
    height: 16px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.sidebar.collapsed ~ .main-content .header {
    padding-left: 60px;
}

.header-title {
    font-size: 20px;
    font-weight: 600;
}

.header-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.lang-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lang-select:hover {
    background: var(--bg-hover);
}

.icon-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.icon-btn:hover {
    background: var(--bg-hover);
}

.theme-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.editor-container {
    flex: 1;
    display: flex;
    gap: 20px;
    padding: 24px;
    overflow: hidden;
}

.editor-panel {
    flex: 1 1 0;
    min-width: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    min-height: 40px;
}

.panel-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 40px;
}

.panel-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.view-mode-toggle {
    display: flex;
    gap: 4px;
    background: var(--bg-tertiary);
    padding: 4px;
    border-radius: 6px;
}

.view-mode-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.view-mode-btn.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.output-container {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

textarea {
    flex: 1 1 0;
    min-height: 0;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    resize: none;
    line-height: 1.6;
    transition: all 0.2s ease;
}

.output-container textarea {
    display: none;
}

.output-container textarea.active {
    display: block;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

textarea::placeholder {
    color: var(--text-tertiary);
}

.structured-output {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 14px;
    line-height: 1.6;
    display: none;
}

.structured-output.active {
    display: block;
}

.structured-section {
    margin-bottom: 20px;
}

.structured-header {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 8px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.structured-content {
    color: var(--text-primary);
    white-space: pre-wrap;
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

.comparison-view {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 14px;
    line-height: 1.8;
    display: none;
}

.comparison-view.active {
    display: block;
}

.diff-section {
    margin-bottom: 30px;
}

.diff-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 12px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 4px solid var(--accent-color);
}

.diff-line {
    padding: 2px 6px;
    margin: 2px 0;
    border-radius: 3px;
    display: inline-block;
    width: 100%;
    line-height: 1.6;
}

.diff-add {
    background: var(--add-bg);
    color: var(--text-primary);
    border-left: 3px solid var(--success-color);
    padding-left: 8px;
}

.diff-remove {
    background: var(--remove-bg);
    color: var(--text-secondary);
    border-left: 3px solid var(--danger-color);
    padding-left: 8px;
    opacity: 0.8;
}

.diff-header {
    background: var(--bg-tertiary);
    color: var(--accent-color);
    font-weight: 700;
    border-left: 4px solid var(--accent-color);
    padding-left: 8px;
    margin-top: 8px;
    margin-bottom: 4px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.diff-empty {
    height: 1.6em;
}

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

.char-count {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 8px;
    text-align: right;
    flex-shrink: 0;
    line-height: 1.5;
}

.bottom-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.action-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex: 1;
    flex-wrap: wrap;
}

.force-english-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.force-english-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.force-english-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 12px;
    align-items: center;
}

.social-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.social-icon svg {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.social-icon:hover svg {
    transform: scale(1.1);
}

/* YouTube */
.social-icon.youtube {
    color: #FF0000;
}

.social-icon.youtube:hover {
    background: #FF0000;
    border-color: #FF0000;
}

.social-icon.youtube:hover svg {
    color: white;
}

/* Bilibili */
.social-icon.bilibili {
    color: #00A1D6;
}

.social-icon.bilibili:hover {
    background: #00A1D6;
    border-color: #00A1D6;
}

.social-icon.bilibili:hover svg {
    color: white;
}

/* GitHub */
.social-icon.github {
    color: var(--text-primary);
}

.social-icon.github:hover {
    background: #181717;
    border-color: #181717;
}

.social-icon.github:hover svg {
    color: white;
}

[data-theme="dark"] .social-icon.github:hover {
    background: #FFFFFF;
    border-color: #FFFFFF;
}

[data-theme="dark"] .social-icon.github:hover svg {
    color: #181717;
}

/* Discord */
.social-icon.discord {
    color: #5865F2;
}

.social-icon.discord:hover {
    background: #5865F2;
    border-color: #5865F2;
}

.social-icon.discord:hover svg {
    color: white;
}

/* Twitter/X */
.social-icon.twitter {
    color: #000000;
}

.social-icon.twitter:hover {
    background: #000000;
    border-color: #000000;
}

.social-icon.twitter:hover svg {
    color: white;
}

[data-theme="dark"] .social-icon.twitter {
    color: #FFFFFF;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 0;
    max-width: 90vw;
    max-height: 90vh;
    width: 1000px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s ease;
}

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

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.diff-container {
    display: flex;
    gap: 20px;
}

.diff-panel {
    flex: 1;
}

.diff-panel-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.diff-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 13px;
    line-height: 1.8;
    max-height: 60vh;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(120px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--accent-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

/* Loading */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

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

.info-icon {
    cursor: help;
    color: var(--text-tertiary);
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        width: 260px;
    }

    .editor-container {
        flex-direction: column;
    }

    .diff-container {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .bottom-actions {
        flex-direction: column;
        gap: 16px;
    }

    .action-buttons {
        width: 100%;
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .social-icon {
        width: 32px;
        height: 32px;
    }

    .social-icon svg {
        width: 18px;
        height: 18px;
    }
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-tertiary);
    margin-top: 4px;
    padding: 0 2px;
}