/* ============================================
   Design Tokens
   ============================================ */
:root {
    /* Colors - Dark Mode Palette */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a27;
    --bg-surface: #16161f;
    --bg-elevated: #1e1e2e;
    --bg-hover: #252535;

    --text-primary: #e4e4ef;
    --text-secondary: #8888a0;
    --text-tertiary: #5a5a72;
    --text-muted: #44445a;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --accent-glow-strong: rgba(99, 102, 241, 0.3);

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(99, 102, 241, 0.5);

    /* Diff Colors */
    --diff-added-bg: rgba(34, 197, 94, 0.12);
    --diff-added-text: #4ade80;
    --diff-added-highlight: rgba(34, 197, 94, 0.25);
    --diff-added-gutter: rgba(34, 197, 94, 0.3);

    --diff-removed-bg: rgba(239, 68, 68, 0.12);
    --diff-removed-text: #f87171;
    --diff-removed-highlight: rgba(239, 68, 68, 0.25);
    --diff-removed-gutter: rgba(239, 68, 68, 0.3);

    --diff-changed-bg: rgba(251, 191, 36, 0.08);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Light Mode
   ============================================ */
[data-theme="light"] {
    --bg-primary: #f5f5f9;
    --bg-secondary: #eeeef4;
    --bg-tertiary: #e6e6ee;
    --bg-surface: #ffffff;
    --bg-elevated: #f0f0f6;
    --bg-hover: #e2e2ec;

    --text-primary: #1a1a2e;
    --text-secondary: #555570;
    --text-tertiary: #8888a0;
    --text-muted: #aaaabc;

    --accent-primary: #5558e6;
    --accent-primary-hover: #6366f1;
    --accent-secondary: #7c5cd6;
    --accent-glow: rgba(85, 88, 230, 0.1);
    --accent-glow-strong: rgba(85, 88, 230, 0.2);

    --border-subtle: rgba(0, 0, 0, 0.07);
    --border-default: rgba(0, 0, 0, 0.12);
    --border-focus: rgba(85, 88, 230, 0.4);

    /* Diff Colors */
    --diff-added-bg: rgba(34, 197, 94, 0.1);
    --diff-added-text: #16a34a;
    --diff-added-highlight: rgba(34, 197, 94, 0.2);
    --diff-added-gutter: rgba(34, 197, 94, 0.15);

    --diff-removed-bg: rgba(239, 68, 68, 0.08);
    --diff-removed-text: #dc2626;
    --diff-removed-highlight: rgba(239, 68, 68, 0.18);
    --diff-removed-gutter: rgba(239, 68, 68, 0.15);

    --diff-changed-bg: rgba(251, 191, 36, 0.08);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

[data-theme="light"] header {
    background: rgba(245, 245, 249, 0.7);
}

[data-theme="light"] .blob { opacity: 0.2; }

[data-theme="light"] .line-numbers {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .panel-header {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .panel-footer {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .results-header {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .results-nav {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .diff-line-number {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .diff-line.empty {
    background: rgba(0, 0, 0, 0.015);
}

[data-theme="light"] .diff-line.added .diff-line-number {
    background: rgba(34, 197, 94, 0.06);
}

[data-theme="light"] .diff-line.removed .diff-line-number {
    background: rgba(239, 68, 68, 0.06);
}

[data-theme="light"] .diff-char-removed {
    text-decoration-color: rgba(220, 38, 38, 0.5);
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
    background: #ccc;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: #aaa;
}

/* ============================================
   Theme Toggle
   ============================================ */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-default);
    transform: rotate(15deg);
}

.theme-toggle svg {
    transition: transform var(--transition-normal);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
    display: block;
}

/* Smooth theme transition */
body, header, .toolbar, .editor-panel, .results-container, .btn-ghost, .btn-view,
.panel-header, .panel-footer, .results-header, .results-nav, .diff-panel-header,
footer, .view-toggle, .checkbox-custom {
    transition: background var(--transition-normal),
                color var(--transition-normal),
                border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ============================================
   Ambient Background
   ============================================ */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 70%);
    top: 50%;
    right: -150px;
    animation-delay: -7s;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent 70%);
    bottom: -100px;
    left: 40%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -20px) scale(1.05); }
    50% { transform: translate(-20px, 30px) scale(0.95); }
    75% { transform: translate(20px, 20px) scale(1.03); }
}

/* ============================================
   Header
   ============================================ */
header {
    position: relative;
    z-index: 10;
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.6);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

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

/* ============================================
   Main Content
   ============================================ */
main {
    position: relative;
    z-index: 10;
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ============================================
   Toolbar
   ============================================ */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toolbar-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-right: var(--spacing-md);
    padding-right: var(--spacing-md);
    border-right: 1px solid var(--border-subtle);
}

.view-toggle {
    display: flex;
    gap: 2px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 2px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: white;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:active::after {
    opacity: 0.05;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 30px var(--accent-glow-strong);
}

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
}

.btn-view {
    background: transparent;
    color: var(--text-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    border-radius: 4px;
}

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

.btn-view:hover:not(.active) {
    color: var(--text-secondary);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* ============================================
   Checkboxes
   ============================================ */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-secondary);
    user-select: none;
    transition: color var(--transition-fast);
}

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

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border-default);
    border-radius: 4px;
    position: relative;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 4.5px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 1.5px 1.5px 0;
    transform: rotate(45deg);
}

/* ============================================
   Editor Panels
   ============================================ */
.editors-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    height: 400px;
}

.editor-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 0;
    transition: border-color var(--transition-fast);
}

.editor-panel:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.02);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.panel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot-original {
    background: var(--diff-removed-text);
    box-shadow: 0 0 8px rgba(248, 113, 113, 0.4);
}

.dot-modified {
    background: var(--diff-added-text);
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.4);
}

.panel-actions {
    display: flex;
    gap: 2px;
}

.editor-wrapper {
    display: flex;
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 0;
}

.line-numbers {
    width: 40px;
    padding: var(--spacing-md) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.15);
    border-right: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.6;
    color: var(--text-muted);
    text-align: right;
    user-select: none;
    overflow: hidden;
    white-space: pre-line;
}

.editor {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-primary);
    tab-size: 4;
    white-space: pre;
    overflow-wrap: normal;
    overflow: auto;
}

.editor::placeholder {
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-style: italic;
}

.panel-footer {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-top: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.1);
}

.char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.panel-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--spacing-lg);
}

.divider-line {
    width: 1px;
    height: 100%;
    background: var(--border-subtle);
}

/* ============================================
   Results Section
   ============================================ */
.results-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.02);
}

.results-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.results-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.82rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
}

.stat-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.stat-dot.added {
    background: var(--diff-added-text);
}

.stat-dot.removed {
    background: var(--diff-removed-text);
}

.stat-dot.unchanged {
    background: var(--text-muted);
}

.results-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.1);
}

.diff-position {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
    min-width: 60px;
    text-align: center;
}

/* ============================================
   Diff Views
   ============================================ */
.diff-view {
    overflow: auto;
    max-height: 600px;
}

.side-by-side-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.diff-panel {
    overflow: auto;
}

.diff-panel:first-child {
    border-right: 1px solid var(--border-subtle);
}

.diff-panel-header {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.diff-content {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.6;
}

.diff-line {
    display: flex;
    min-height: 1.6em;
    transition: background var(--transition-fast);
}

.diff-line:hover {
    filter: brightness(1.15);
}

.diff-line-number {
    width: 50px;
    min-width: 50px;
    padding: 0 var(--spacing-sm);
    text-align: right;
    color: var(--text-muted);
    user-select: none;
    border-right: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.1);
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.diff-line-gutter {
    width: 24px;
    min-width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    user-select: none;
}

.diff-line-content {
    flex: 1;
    padding: 0 var(--spacing-md);
    white-space: pre-wrap;
    word-break: break-all;
}

/* Diff line states */
.diff-line.added {
    background: var(--diff-added-bg);
}

.diff-line.added .diff-line-gutter {
    color: var(--diff-added-text);
    background: var(--diff-added-gutter);
}

.diff-line.added .diff-line-number {
    background: rgba(34, 197, 94, 0.08);
    color: var(--diff-added-text);
}

.diff-line.removed {
    background: var(--diff-removed-bg);
}

.diff-line.removed .diff-line-gutter {
    color: var(--diff-removed-text);
    background: var(--diff-removed-gutter);
}

.diff-line.removed .diff-line-number {
    background: rgba(239, 68, 68, 0.08);
    color: var(--diff-removed-text);
}

.diff-line.empty {
    background: rgba(255, 255, 255, 0.01);
}

.diff-line.empty .diff-line-content {
    visibility: hidden;
}

/* Inline character-level diff highlights */
.diff-char-added {
    background: var(--diff-added-highlight);
    border-radius: 2px;
    padding: 0 1px;
}

.diff-char-removed {
    background: var(--diff-removed-highlight);
    border-radius: 2px;
    padding: 0 1px;
    text-decoration: line-through;
    text-decoration-color: rgba(248, 113, 113, 0.5);
}

/* Match indicator */
.match-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 500;
}

.match-indicator.identical {
    background: rgba(34, 197, 94, 0.1);
    color: var(--diff-added-text);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.match-indicator.different {
    background: rgba(251, 191, 36, 0.1);
    color: #fbbf24;
    border: 1px solid rgba(251, 191, 36, 0.2);
}

/* Focused diff line */
.diff-line.focused {
    outline: 2px solid var(--accent-primary);
    outline-offset: -2px;
    border-radius: 2px;
}

/* ============================================
   Footer
   ============================================ */
footer {
    position: relative;
    z-index: 10;
    padding: var(--spacing-xl) var(--spacing-2xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: var(--spacing-2xl);
}

/* ============================================
   Scrollbar Styles
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: 3px;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .editors-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .panel-divider {
        display: none;
    }

    .side-by-side-view {
        grid-template-columns: 1fr;
    }

    .diff-panel:first-child {
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }

    .toolbar-options {
        border-right: none;
        padding-right: 0;
        margin-right: 0;
    }

    .toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .toolbar-left,
    .toolbar-right {
        width: 100%;
        flex-wrap: wrap;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 640px) {
    main {
        padding: var(--spacing-md);
    }

    header {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .toolbar-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}