/* ================================================================
   QUBIBYTE ROUTE SIMULATOR — Design System
   ================================================================ */

/* ======================== DESIGN TOKENS ======================== */
:root {
    --color-primary: #554A9E;
    --color-primary-light: #6B5FC7;
    --color-primary-glow: rgba(85, 74, 158, 0.35);
    --color-secondary: #0687C9;
    --color-secondary-light: #1A9FE0;
    --color-secondary-glow: rgba(6, 135, 201, 0.35);
    --color-accent: #AB6FAF;
    --color-accent-light: #C487C7;

    --bg-deepest: #060614;
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f23;
    --bg-card: #141428;
    --bg-card-hover: #1a1a35;
    --bg-surface: #1e1e3a;
    --bg-elevated: #252545;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-link: #38bdf8;

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.10);
    --border-hover: rgba(255, 255, 255, 0.18);
    --border-accent: rgba(85, 74, 158, 0.4);

    --gradient-primary: linear-gradient(135deg, #554A9E 0%, #0687C9 100%);
    --gradient-accent: linear-gradient(135deg, #0687C9 0%, #AB6FAF 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --font-display: 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s var(--ease-smooth);
    --transition-base: 0.3s var(--ease-smooth);
    --transition-slow: 0.5s var(--ease-out);

    --sidebar-width: 300px;
    --results-width: 380px;
    --topbar-height: 56px;
}

/* ======================== GLOBAL RESET ======================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-deepest);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    line-height: 1.5;
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.20);
}

::selection {
    background: rgba(6, 135, 201, 0.3);
    color: #fff;
}

/* ======================== TOP BAR ======================== */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: rgba(10, 10, 26, 0.92);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-logo {
    height: 26px;
    width: auto;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.topbar-logo:hover {
    opacity: 1;
}

.topbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-default);
}

.topbar-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.topbar-badge {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--gradient-accent);
    color: white;
    letter-spacing: 0.08em;
}

.topbar-center {
    display: flex;
    align-items: center;
}

.topbar-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
    animation: statusPulse 2s ease-in-out infinite;
}

.status-dot.running {
    background: #38bdf8;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
}

@keyframes statusPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.topbar-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.topbar-btn.active {
    background: rgba(85, 74, 158, 0.25);
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.topbar-btn-outline {
    border-color: var(--border-default);
}

/* ======================== APP LAYOUT ======================== */
.app-layout {
    display: flex;
    height: calc(100vh - var(--topbar-height));
    margin-top: var(--topbar-height);
}

/* ======================== LEFT SIDEBAR ======================== */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: rgba(10, 10, 26, 0.95);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

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

.sidebar-section-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-section-title svg {
    opacity: 0.6;
}

/* ======================== CONTROLS ======================== */
.control-group {
    margin-bottom: 14px;
}

.control-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.control-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-range {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.control-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-secondary);
    cursor: pointer;
    box-shadow: 0 0 8px var(--color-secondary-glow);
    transition: all var(--transition-fast);
}

.control-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 16px var(--color-secondary-glow);
}

.control-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-secondary);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 8px var(--color-secondary-glow);
}

.control-value {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-secondary-light);
    min-width: 36px;
    text-align: right;
    font-weight: 600;
}

.control-select {
    width: 100%;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: var(--font-body);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.control-select:focus {
    border-color: var(--color-secondary);
}

.control-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.control-input {
    width: 100%;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color var(--transition-fast);
}

.control-input:focus {
    border-color: var(--color-secondary);
}

.control-checkbox {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--border-default);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.control-checkbox:checked {
    background: var(--color-secondary);
    border-color: var(--color-secondary);
}

.control-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
}

/* ======================== ALGORITHM LIST ======================== */
.algo-category {
    margin-bottom: 12px;
}

.algo-category-title {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 8px;
    padding-left: 4px;
}

.quantum-title {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.algo-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.algo-item:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.algo-item input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border: 1.5px solid var(--border-default);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.algo-item input[type="checkbox"]:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.algo-item input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 9px;
    font-weight: bold;
}

.algo-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background: var(--algo-clr);
    flex-shrink: 0;
}

/* ======================== SIDEBAR BUTTONS ======================== */
.sidebar-actions {
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn-primary,
.btn-accent,
.btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    width: 100%;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.10);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

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

.btn-accent:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 30px var(--color-primary-glow);
}

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

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
}

/* ======================== MAIN MAP AREA ======================== */
.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.map-container {
    flex: 1;
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

#mapCanvas {
    width: 100%;
    height: 100%;
    cursor: crosshair;
}

/* Map grid background */
.map-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.map-container::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 40%, rgba(6, 6, 20, 0.6) 100%);
    pointer-events: none;
    z-index: 0;
}

.map-overlay-top {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 5;
}

.map-info-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 6px 14px;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.map-info-sep {
    opacity: 0.3;
}

.map-overlay-bottom {
    position: absolute;
    bottom: 12px;
    left: 12px;
    z-index: 5;
}

.map-legend {
    gap: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 4px 12px;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 2px;
}

.depot-label {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(10, 10, 26, 0.9);
    border: 1px solid var(--color-secondary);
    border-radius: var(--radius-full);
    padding: 3px 10px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-secondary-light);
    z-index: 6;
    pointer-events: none;
}

/* ======================== METRICS BAR ======================== */
.metrics-bar {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(10, 10, 26, 0.95);
    border-top: 1px solid var(--border-subtle);
    z-index: 5;
}

.metric-card {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    transition: all var(--transition-base);
}

.metric-card:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.05);
}

.metric-icon {
    font-size: 1.3rem;
    line-height: 1;
}

.metric-content {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ======================== RESULTS PANEL ======================== */
.results-panel {
    width: var(--results-width);
    min-width: var(--results-width);
    background: rgba(10, 10, 26, 0.95);
    border-left: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 8px;
}

.panel-tab {
    padding: 12px 16px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

.panel-tab:hover {
    color: var(--text-secondary);
}

.panel-tab.active {
    color: var(--color-secondary-light);
    border-bottom-color: var(--color-secondary);
}

.panel-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.panel-content {
    display: none;
}

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

/* Results empty state */
.results-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-icon {
    margin-bottom: 16px;
}

.empty-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Results list */
.result-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 10px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.result-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--result-color, var(--color-secondary));
}

.result-item:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.05);
}

.result-item.best {
    border-color: rgba(34, 197, 94, 0.3);
    background: rgba(34, 197, 94, 0.05);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.result-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-rank {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
}

.result-rank.first {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.result-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.result-stat {
    display: flex;
    flex-direction: column;
}

.result-stat-label {
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

.result-stat-value {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-primary);
    font-weight: 600;
}

.result-bar {
    margin-top: 10px;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
}

.result-bar-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--result-color, var(--color-secondary));
    transition: width 1s var(--ease-out);
}

/* ======================== CHARTS ======================== */
.chart-section {
    margin-bottom: 24px;
}

.chart-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

/* ======================== QUANTUM PANEL ======================== */
.quantum-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.quantum-title {
    font-size: 1rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.quantum-badge {
    font-size: 0.6rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: rgba(171, 111, 175, 0.15);
    color: var(--color-accent-light);
    letter-spacing: 0.1em;
    border: 1px solid rgba(171, 111, 175, 0.25);
}

.quantum-stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    margin-bottom: 20px;
}

.qstat {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 10px;
    text-align: center;
}

.qstat-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

.qstat-value {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-accent-light);
}

.bloch-sphere-container {
    margin-bottom: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#blochCanvas {
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    width: 180px !important;
    height: 180px !important;
    max-width: 100%;
}

.quantum-explainer {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 16px;
}

.quantum-explainer p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 10px;
}

.quantum-explainer p:last-child {
    margin-bottom: 0;
}

.quantum-explainer strong {
    color: var(--color-accent-light);
}

/* ======================== QUANTUM OVERLAY ======================== */
.quantum-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 999;
    opacity: 0;
    transition: opacity 0.8s ease;
}

body.quantum-mode .quantum-overlay {
    opacity: 1;
    background:
        radial-gradient(ellipse 800px 600px at 20% 30%, rgba(171, 111, 175, 0.06) 0%, transparent 70%),
        radial-gradient(ellipse 600px 400px at 80% 70%, rgba(85, 74, 158, 0.05) 0%, transparent 70%);
}

body.quantum-mode .map-container::before {
    background-image:
        linear-gradient(rgba(171, 111, 175, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(171, 111, 175, 0.03) 1px, transparent 1px);
}

body.quantum-mode .topbar {
    border-bottom-color: rgba(171, 111, 175, 0.2);
}

body.quantum-mode .sidebar,
body.quantum-mode .results-panel {
    border-color: rgba(171, 111, 175, 0.15);
}

body.quantum-mode .metric-card {
    border-color: rgba(171, 111, 175, 0.15);
}

/* ======================== LEARN MODAL ======================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.modal-overlay.active {
    display: flex;
}

.modal-container {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    max-width: 900px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    padding: 40px;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-header {
    margin-bottom: 32px;
}

.modal-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.modal-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.learn-section {
    margin-bottom: 32px;
}

.learn-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.learn-section p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.learn-section em {
    color: var(--color-secondary-light);
    font-style: italic;
}

.learn-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.learn-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.learn-table th {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.68rem;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.learn-table td {
    padding: 8px 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.learn-table tr:last-child td {
    border-bottom: none;
}

.learn-table .quantum-row td {
    background: rgba(171, 111, 175, 0.05);
    color: var(--color-accent-light);
}

.learn-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.comparison-col {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 20px;
}

.comparison-quantum {
    border-color: rgba(171, 111, 175, 0.25);
    background: rgba(171, 111, 175, 0.05);
}

.comparison-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.comparison-col ul {
    list-style: none;
    padding: 0;
}

.comparison-col li {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.comparison-col li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.when-to-use {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.use-case {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.use-case strong {
    color: var(--color-secondary-light);
}

/* ======================== RESPONSIVE ======================== */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 260px;
        --results-width: 320px;
    }
}

@media (max-width: 900px) {
    .app-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }

    .sidebar-scroll {
        display: flex;
        overflow-x: auto;
        gap: 16px;
        padding: 12px;
    }

    .sidebar-section {
        min-width: 200px;
        margin-bottom: 0;
    }

    .results-panel {
        width: 100%;
        min-width: 100%;
        max-height: 300px;
        border-left: none;
        border-top: 1px solid var(--border-subtle);
    }

    .metrics-bar {
        flex-wrap: wrap;
    }

    .topbar-btn span {
        display: none;
    }

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

/* ======================== ANIMATIONS ======================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    100% {
        background-position: 200% 0;
    }
}

.result-item {
    animation: fadeInUp 0.4s var(--ease-out) both;
}

.result-item:nth-child(2) {
    animation-delay: 0.05s;
}

.result-item:nth-child(3) {
    animation-delay: 0.1s;
}

.result-item:nth-child(4) {
    animation-delay: 0.15s;
}

.result-item:nth-child(5) {
    animation-delay: 0.2s;
}

.result-item:nth-child(6) {
    animation-delay: 0.25s;
}

.result-item:nth-child(7) {
    animation-delay: 0.3s;
}

.result-item:nth-child(8) {
    animation-delay: 0.35s;
}

.result-item:nth-child(9) {
    animation-delay: 0.4s;
}

.result-item:nth-child(10) {
    animation-delay: 0.45s;
}

.result-item:nth-child(11) {
    animation-delay: 0.5s;
}

.result-item:nth-child(12) {
    animation-delay: 0.55s;
}

/* ======================== ROUTE TOGGLES ======================== */
.result-toggles {
    display: flex;
    gap: 4px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.route-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 0.65rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.route-toggle.active {
    border-color: var(--tc, var(--color-secondary));
    color: var(--tc, var(--color-secondary));
    background: rgba(255, 255, 255, 0.05);
}

.route-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* ======================== CONTROL HINTS ======================== */
.control-hint {
    font-size: 0.65rem;
    color: var(--text-muted);
    opacity: 0.6;
    margin-top: 2px;
    display: block;
    padding-left: 24px;
}

/* ======================== ALGO NOTES ======================== */
.algo-note {
    font-weight: 400;
    font-size: 0.6rem;
    color: var(--text-muted);
    text-transform: none;
    letter-spacing: 0;
}

/* ======================== RESULTS ACTIONS ======================== */
.results-actions {
    display: flex;
    gap: 6px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.02);
}

.btn-xs {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-xs:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border-color: var(--border-default);
}

/* ======================== SEED ROW ======================== */
.seed-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.seed-input {
    flex: 1;
    min-width: 0;
}

.seed-random-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    flex-shrink: 0;
}

.seed-random-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

/* ======================== LEGEND OVERFLOW ======================== */
.map-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    max-width: calc(100vw - var(--sidebar-width) - var(--results-width) - 40px);
    max-height: 80px;
    overflow-y: auto;
    padding-right: 4px;
}

.legend-collapsed {
    max-height: 62px;
}

.legend-more {
    background: rgba(85, 74, 158, 0.2) !important;
    color: var(--color-primary-light) !important;
    border-color: rgba(85, 74, 158, 0.3) !important;
    font-style: italic;
}

/* ======================== ALGORITHM EXPLORER ======================== */
.algo-explorer {
    display: flex;
    gap: 16px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.algo-explorer-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 10px;
    min-width: 180px;
    max-height: 360px;
    overflow-y: auto;
    border-right: 1px solid var(--border-subtle);
}

.algo-explore-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.algo-explore-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.algo-explore-btn.active {
    background: rgba(85, 74, 158, 0.2);
    color: var(--text-primary);
    font-weight: 600;
}

.algo-explore-dot {
    width: 8px;
    height: 8px;
    border-radius: 2px;
    flex-shrink: 0;
}

.algo-explore-detail {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 16px;
    gap: 16px;
}

.algo-explore-canvas-wrap {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    background: #0a0a1a;
}

.algo-explore-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: 220px;
}

.algo-explore-info h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.algo-explore-meta {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.algo-explore-tag {
    font-size: 0.65rem;
    font-weight: 600;
    font-family: var(--font-mono);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
}

.algo-explore-tag.optimal-yes {
    background: rgba(34, 197, 94, 0.12);
    color: #22c55e;
    border-color: rgba(34, 197, 94, 0.25);
}

.algo-explore-info p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .algo-explorer {
        flex-direction: column;
    }

    .algo-explorer-list {
        flex-direction: row;
        overflow-x: auto;
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
        min-width: auto;
    }
}