:root {
    --primary-blue: #0066cc;
    --primary-green: #00cc88;
    --accent-cyan: #25b9d8;
    --bg-page: #050f20;
    --bg-page-alt: #0a1f3f;
    --bg-surface: rgba(12, 30, 56, 0.82);
    --bg-surface-soft: rgba(8, 25, 47, 0.72);
    --surface-highlight: rgba(162, 215, 255, 0.08);
    --text-primary: #e7effc;
    --text-secondary: #a7b9d6;
    --border-soft: rgba(122, 170, 235, 0.26);
    --gradient-primary: linear-gradient(135deg, #0066cc, #00cc88);
    --shadow-sm: 0 10px 28px rgba(1, 11, 28, 0.28);
    --shadow-lg: 0 24px 54px rgba(1, 11, 28, 0.44);
    --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="dark"] {
    color-scheme: dark;
}

html[data-theme="light"] {
    color-scheme: light;
    --bg-page: #ecf4ff;
    --bg-page-alt: #dae9ff;
    --bg-surface: rgba(255, 255, 255, 0.9);
    --bg-surface-soft: rgba(237, 245, 255, 0.94);
    --surface-highlight: rgba(87, 154, 228, 0.12);
    --text-primary: #10233e;
    --text-secondary: #4f6482;
    --border-soft: rgba(0, 102, 204, 0.18);
    --shadow-sm: 0 8px 22px rgba(56, 96, 153, 0.12);
    --shadow-lg: 0 18px 42px rgba(48, 84, 133, 0.18);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    position: relative;
    overflow-x: hidden;
    background:
        radial-gradient(900px 460px at -8% -15%, rgba(0, 204, 136, 0.16), transparent 66%),
        radial-gradient(960px 560px at 108% -8%, rgba(0, 153, 255, 0.2), transparent 62%),
        linear-gradient(145deg, var(--bg-page) 0%, var(--bg-page-alt) 100%);
    min-height: 100vh;
}

body::before,
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
}

body::before {
    background-image:
        linear-gradient(rgba(157, 199, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(157, 199, 255, 0.05) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.66), transparent 90%);
    opacity: 0.4;
}

body::after {
    background:
        radial-gradient(820px 420px at 25% 108%, rgba(0, 117, 226, 0.16), transparent 70%),
        radial-gradient(720px 380px at 80% 100%, rgba(0, 204, 136, 0.1), transparent 72%);
}

.playground-shell {
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.playground-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--border-soft);
    backdrop-filter: blur(14px);
    background: rgba(8, 20, 38, 0.72);
}

html[data-theme="light"] .playground-nav {
    background: rgba(238, 246, 255, 0.74);
}

.nav-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 1rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand-link {
    display: inline-flex;
    align-items: center;
}

.brand-logo {
    height: 40px;
    width: auto;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.back-link {
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    padding: 0.56rem 0.9rem;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-surface-soft);
    transition: var(--transition);
}

.back-link:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.theme-toggle:focus-visible {
    outline: 3px solid rgba(0, 102, 204, 0.28);
    outline-offset: 2px;
}

.playground-main {
    max-width: 1240px;
    margin: 0 auto;
    padding: 1.6rem 1.2rem 2rem;
    display: grid;
    gap: 1.2rem;
}

.card-surface {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    border-radius: 24px;
    background: linear-gradient(165deg, var(--surface-highlight), var(--bg-surface) 56%);
    box-shadow: var(--shadow-sm);
}

.card-surface::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(180, 224, 255, 0.06);
    pointer-events: none;
}

.intro-section {
    padding: 1.5rem 1.6rem;
}

.eyebrow {
    margin: 0 0 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    color: var(--accent-cyan);
    font-weight: 700;
}

.intro-section h1 {
    margin: 0;
    font-size: clamp(1.8rem, 3.4vw, 2.7rem);
    line-height: 1.12;
}

.intro-section p {
    margin: 0.7rem 0 0;
    color: var(--text-secondary);
    max-width: 74ch;
    line-height: 1.6;
}

.globe-section {
    display: grid;
    grid-template-columns: 1.7fr 1fr;
    gap: 1.1rem;
}

.globe-panel,
.region-panel,
.simulation-header,
.arena-panel,
.metrics-panel,
.event-feed {
    padding: 1.25rem;
}

.globe-panel h2,
.region-panel h3,
.metrics-panel h3,
.simulation-header h2,
.event-feed h3 {
    margin: 0;
}

.panel-note,
.simulation-header p,
.arena-note,
#regionSummary {
    margin: 0.5rem 0 0;
    color: var(--text-secondary);
}

.data-note {
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
    color: rgba(168, 202, 236, 0.9);
}

.globe {
    margin-top: 1rem;
    width: min(600px, 100%);
    aspect-ratio: 1;
    border-radius: 50%;
    position: relative;
    background: radial-gradient(circle at 42% 38%, rgba(21, 73, 148, 0.34), rgba(3, 18, 50, 0.96) 66%);
    border: 1px solid rgba(122, 184, 244, 0.33);
    overflow: hidden;
    box-shadow:
        var(--shadow-lg),
        inset 0 0 54px rgba(2, 10, 26, 0.72),
        0 0 0 1px rgba(116, 186, 245, 0.12);
    cursor: grab;
    touch-action: none;
}

.globe:active {
    cursor: grabbing;
}

.globe-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.globe::before,
.globe::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: 50%;
}

.globe::before {
    background: none;
}

.globe::after {
    background: radial-gradient(circle at 62% 118%, rgba(0, 0, 0, 0.5), transparent 60%);
    opacity: 0.48;
}

.globe-atmosphere,
.globe-specular,
.globe-rings {
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: 50%;
}

.globe-atmosphere {
    box-shadow:
        inset 0 0 30px rgba(92, 165, 236, 0.2),
        inset 0 -34px 88px rgba(0, 7, 21, 0.58);
}

.globe-specular {
    display: none;
}

.globe-rings {
    border: 1px solid rgba(184, 221, 255, 0.24);
    transform: scale(0.89) rotate(-12deg);
    animation: globeRingPulse 11s ease-in-out infinite;
}

.globe-hint {
    margin: 0.72rem 0 0;
    color: var(--text-secondary);
    font-size: 0.84rem;
}

.region-marker {
    position: absolute;
    left: 0;
    top: 0;
    transform: translate3d(var(--mx, var(--x, 50%)), var(--my, var(--y, 50%)), 0) translate(-50%, -50%) scale(var(--marker-scale, 1));
    border: 1px solid rgba(189, 228, 255, 0.58);
    border-radius: 999px;
    padding: 0.32rem 0.68rem;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #f3f9ff;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.4);
    background: linear-gradient(155deg, rgba(22, 106, 195, 0.94), rgba(6, 63, 128, 0.92));
    backdrop-filter: blur(10px);
    cursor: pointer;
    box-shadow:
        0 8px 20px rgba(0, 12, 30, 0.34),
        0 0 0 1px rgba(214, 238, 255, 0.14) inset;
    transition: opacity 0.14s ease, background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    opacity: var(--marker-opacity, 1);
    pointer-events: auto;
    z-index: 10;
    will-change: transform, opacity;
}

.globe.is-enhanced .region-marker {
    left: 0;
    top: 0;
}

.globe.is-enhanced .region-marker.is-visible {
    opacity: 0.95;
    pointer-events: auto;
}

.globe.is-enhanced .region-marker.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.region-marker::before,
.region-marker::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: inherit;
    opacity: 0;
    transition: var(--transition);
}

.region-marker::before {
    border: 1px solid rgba(171, 215, 255, 0.46);
    transform: scale(0.85);
}

.region-marker::after {
    inset: -12px;
    border: 1px solid rgba(111, 205, 255, 0.45);
    transform: scale(0.7);
}

.region-marker.is-visible {
    opacity: 0.95;
    pointer-events: auto;
}

.region-marker.is-visible::after {
    opacity: 0.82;
    animation: markerPulse 2.2s ease-out infinite;
}

.region-marker:hover,
.region-marker.is-active {
    background: linear-gradient(145deg, rgba(0, 134, 225, 0.95), rgba(0, 194, 148, 0.9));
    transform: translate3d(var(--mx, var(--x, 50%)), var(--my, var(--y, 50%)), 0) translate(-50%, -50%) scale(calc(var(--marker-scale, 1) * 1.06));
}

.region-marker:hover::before,
.region-marker.is-active::before {
    opacity: 1;
    transform: scale(1.06);
}

.region-marker.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.region-baseline {
    margin-top: 1rem;
    display: grid;
    gap: 0.65rem;
}

.baseline-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    padding: 0.72rem 0.84rem;
    background: linear-gradient(145deg, rgba(148, 206, 255, 0.05), var(--bg-surface-soft));
}

.baseline-row span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.baseline-row strong {
    letter-spacing: 0.01em;
}

.region-live {
    margin-top: 0.85rem;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    padding: 0.75rem 0.82rem;
    background: linear-gradient(150deg, rgba(148, 206, 255, 0.07), var(--bg-surface-soft));
    display: grid;
    gap: 0.55rem;
}

.region-live h4 {
    margin: 0;
    font-size: 0.86rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--accent-cyan);
}

.live-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    font-size: 0.88rem;
}

.live-row span {
    color: var(--text-secondary);
}

.live-row strong {
    font-size: 0.9rem;
    letter-spacing: 0.01em;
}

.live-row.macro strong {
    color: var(--accent-cyan);
}

.live-row.macro strong.is-positive {
    color: #1bd3a3;
}

.live-row.macro strong.is-negative {
    color: #ff6f7d;
}

.simulation-section {
    display: grid;
    gap: 1.1rem;
}

.simulation-section[hidden] {
    display: none !important;
}

.simulation-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.controls {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.control-btn {
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
    color: var(--text-primary);
    border-radius: 999px;
    padding: 0.58rem 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.control-btn.secondary {
    color: var(--accent-cyan);
}

.control-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.speed-control {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    padding: 0.52rem 0.76rem;
    background: var(--bg-surface-soft);
    color: var(--text-secondary);
    font-size: 0.86rem;
    font-weight: 600;
}

.speed-control input {
    accent-color: var(--primary-blue);
}

#speedValue {
    color: var(--text-primary);
    min-width: 2.3rem;
}

.simulation-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr;
    gap: 1.1rem;
}

.agent-arena {
    position: relative;
    width: 100%;
    min-height: 430px;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(145, 196, 255, 0.28);
    background:
        radial-gradient(circle at 20% 15%, rgba(37, 185, 216, 0.14), transparent 42%),
        radial-gradient(circle at 80% 65%, rgba(0, 204, 136, 0.14), transparent 40%),
        linear-gradient(145deg, rgba(8, 18, 36, 0.9), rgba(4, 12, 26, 0.98));
}

.flow-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

html[data-theme="light"] .agent-arena {
    background:
        radial-gradient(circle at 20% 15%, rgba(37, 185, 216, 0.12), transparent 42%),
        radial-gradient(circle at 80% 65%, rgba(0, 204, 136, 0.11), transparent 40%),
        linear-gradient(145deg, rgba(227, 239, 255, 0.96), rgba(205, 226, 255, 0.98));
}

.agent-bubble {
    position: absolute;
    width: var(--size);
    height: var(--size);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(140deg, var(--bubble-color-a), var(--bubble-color-b));
    box-shadow: 0 8px 18px rgba(0, 11, 24, 0.35);
    user-select: none;
    pointer-events: none;
    z-index: 2;
    will-change: transform;
    transition: box-shadow 0.18s ease, filter 0.2s ease;
}

.agent-bubble::before {
    content: '';
    position: absolute;
    inset: 6px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.34), transparent 58%);
    pointer-events: none;
}

.agent-bubble span {
    position: relative;
    z-index: 1;
}

.agent-bubble.is-buying {
    box-shadow: 0 0 0 2px rgba(39, 223, 165, 0.52), 0 10px 22px rgba(0, 11, 24, 0.4);
    filter: saturate(1.12);
}

.agent-bubble.is-selling {
    box-shadow: 0 0 0 2px rgba(255, 114, 136, 0.5), 0 10px 22px rgba(0, 11, 24, 0.4);
    filter: saturate(1.08);
}

.agent-bubble.is-negotiating {
    box-shadow: 0 0 0 2px rgba(125, 199, 255, 0.48), 0 10px 22px rgba(0, 11, 24, 0.4);
}

html[data-theme="light"] .agent-bubble {
    box-shadow: 0 8px 16px rgba(54, 102, 155, 0.2);
}

.arena-note {
    margin: 0.8rem 0 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.metrics-grid {
    margin-top: 0.9rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
}

.metric-card {
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    padding: 0.74rem;
    background: linear-gradient(150deg, rgba(151, 207, 255, 0.06), var(--bg-surface-soft));
}

.metric-card span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.78rem;
}

.metric-card strong {
    display: block;
    margin-top: 0.25rem;
    font-size: 1.06rem;
}

.ticker-board {
    margin-top: 0.9rem;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    padding: 0.8rem;
    background: linear-gradient(150deg, rgba(151, 207, 255, 0.06), var(--bg-surface-soft));
}

.ticker-board h4,
.sparkline-block h4 {
    margin: 0 0 0.55rem;
    font-size: 0.9rem;
}

.ticker-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.4rem;
    font-size: 0.88rem;
}

.ticker-row span {
    color: var(--text-secondary);
}

.sparkline-block {
    margin-top: 0.9rem;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    padding: 0.8rem;
    background: linear-gradient(150deg, rgba(151, 207, 255, 0.06), var(--bg-surface-soft));
}

.sparkline-block svg {
    width: 100%;
    height: 84px;
}

#equitySparkline {
    fill: none;
    stroke: var(--accent-cyan);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.event-feed ul {
    margin: 0.85rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.55rem;
}

.event-feed li {
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    padding: 0.72rem 0.78rem;
    font-size: 0.86rem;
    color: var(--text-secondary);
    background: linear-gradient(150deg, rgba(151, 207, 255, 0.05), var(--bg-surface-soft));
}

.event-feed li strong {
    color: var(--text-primary);
}

.event-side {
    display: inline-block;
    margin-right: 0.28rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.event-macro {
    display: inline-block;
    margin-left: 0.35rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.delta-positive {
    color: #1bd3a3;
}

.delta-negative {
    color: #ff6f7d;
}

#metricPressure.is-positive {
    color: #1bd3a3;
}

#metricPressure.is-negative {
    color: #ff6f7d;
}

@keyframes globeRingPulse {
    0% {
        opacity: 0.2;
        transform: scale(0.87) rotate(-10deg);
    }
    50% {
        opacity: 0.44;
        transform: scale(0.9) rotate(14deg);
    }
    100% {
        opacity: 0.2;
        transform: scale(0.87) rotate(30deg);
    }
}

@keyframes markerPulse {
    0% {
        opacity: 0.8;
        transform: scale(0.72);
    }
    65% {
        opacity: 0.16;
        transform: scale(1.24);
    }
    100% {
        opacity: 0;
        transform: scale(1.34);
    }
}

@media (max-width: 1024px) {
    .globe-section,
    .simulation-grid {
        grid-template-columns: 1fr;
    }

    .globe {
        width: min(460px, 100%);
    }

    .simulation-header {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .nav-container {
        padding: 0.9rem 0.85rem;
    }

    .back-link {
        padding: 0.5rem 0.72rem;
        font-size: 0.82rem;
    }

    .intro-section,
    .globe-panel,
    .region-panel,
    .simulation-header,
    .arena-panel,
    .metrics-panel,
    .event-feed {
        padding: 1rem;
    }

    .region-marker span {
        display: none;
    }

    .region-marker {
        width: 14px;
        height: 14px;
        padding: 0;
        border-radius: 50%;
    }

    .agent-arena {
        min-height: 360px;
    }
}