:root {
    --bg-dark: #06131d;
    --bg-deep: #03090f;
    --panel: rgba(6, 19, 29, 0.84);
    --panel-strong: rgba(10, 26, 39, 0.94);
    --line: rgba(110, 240, 255, 0.26);
    --bright: #9bf7ff;
    --accent: #40e0d0;
    --accent-strong: #f9c74f;
    --dim: #77a4ad;
    --danger: #ff7d7d;
    --shadow: rgba(64, 224, 208, 0.22);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: "Courier New", monospace;
    color: var(--bright);
    background:
        radial-gradient(circle at top, rgba(64, 224, 208, 0.16), transparent 34%),
        radial-gradient(circle at bottom right, rgba(249, 199, 79, 0.12), transparent 28%),
        linear-gradient(180deg, #081521 0%, var(--bg-deep) 100%);
    overflow-x: hidden;
}

.grid-background {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.2));
    opacity: 0.35;
    pointer-events: none;
}

.page-shell {
    position: relative;
    z-index: 1;
    width: min(1240px, calc(100% - 32px));
    margin: 0 auto;
    padding: 40px 0 48px;
}

.hero-panel,
.experience-panel,
.score-card,
.telemetry,
.canvas-panel {
    border: 1px solid rgba(155, 247, 255, 0.18);
    background: var(--panel);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(14px);
}

.hero-panel {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    padding: 28px 30px;
    border-radius: 28px;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--accent-strong);
    font-size: 0.78rem;
    letter-spacing: 0.3rem;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(2.8rem, 8vw, 5.8rem);
    line-height: 0.92;
    letter-spacing: 0.42rem;
    text-shadow: 0 0 30px rgba(155, 247, 255, 0.18);
}

.lede {
    max-width: 56ch;
    margin: 14px 0 0;
    color: var(--dim);
    line-height: 1.7;
    font-size: 0.97rem;
}

.controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.controls button {
    font: inherit;
    color: var(--bright);
    background: rgba(8, 21, 33, 0.88);
    border: 1px solid rgba(155, 247, 255, 0.22);
    border-radius: 999px;
    padding: 14px 20px;
    letter-spacing: 0.16rem;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.controls button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 22px var(--shadow);
    border-color: rgba(155, 247, 255, 0.5);
}

.experience-panel {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 24px;
    padding: 24px;
    border-radius: 30px;
}

.hud-panel {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.score-card {
    border-radius: 22px;
    padding: 20px;
}

.score-card.total {
    background:
        linear-gradient(135deg, rgba(249, 199, 79, 0.12), rgba(64, 224, 208, 0.08)),
        var(--panel-strong);
}

.label {
    display: block;
    color: var(--accent-strong);
    text-transform: uppercase;
    letter-spacing: 0.2rem;
    font-size: 0.72rem;
    margin-bottom: 12px;
}

.score-card strong {
    display: block;
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1;
}

.hint,
.detail {
    display: block;
    margin-top: 12px;
    color: var(--dim);
    font-size: 0.9rem;
    line-height: 1.5;
}

.score-grid {
    display: grid;
    gap: 18px;
}

.telemetry {
    border-radius: 22px;
    padding: 18px 20px;
}

.telemetry-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(155, 247, 255, 0.12);
    color: var(--dim);
}

.telemetry-row:last-child {
    border-bottom: 0;
}

.telemetry-row strong {
    color: var(--bright);
}

.canvas-panel {
    border-radius: 30px;
    padding: 18px;
    min-width: 0;
}

.canvas-header,
.canvas-footer {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--dim);
    font-size: 0.83rem;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
}

.canvas-header {
    padding: 8px 8px 16px;
}

.canvas-footer {
    padding: 16px 8px 6px;
    flex-wrap: wrap;
}

.status-pill {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid rgba(155, 247, 255, 0.18);
    color: var(--accent-strong);
}

#drawing-surface {
    display: block;
    width: 100%;
    height: auto;
    background:
        radial-gradient(circle at center, rgba(64, 224, 208, 0.08), transparent 45%),
        linear-gradient(180deg, rgba(3, 9, 15, 0.85), rgba(5, 15, 24, 0.98));
    border: 1px solid rgba(155, 247, 255, 0.18);
    border-radius: 22px;
    cursor: crosshair;
    touch-action: none;
}

@media (max-width: 1040px) {
    .experience-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .page-shell {
        width: min(100% - 18px, 1240px);
        padding-top: 18px;
    }

    .hero-panel,
    .experience-panel {
        padding: 18px;
        border-radius: 22px;
    }

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

    .hero-copy h1 {
        letter-spacing: 0.2rem;
    }

    .canvas-footer {
        letter-spacing: 0.06rem;
        font-size: 0.72rem;
    }

    .hero-copy h1 { font-size: clamp(2.4rem, 10vw, 4rem); }
    .eyebrow { letter-spacing: 0.12rem; }
    .controls { width: 100%; justify-content: flex-start; }
    .controls button { min-height: 44px; padding: 12px 14px; letter-spacing: 0.06rem; }
    .experience-panel { display: flex; flex-direction: column; padding: 12px; }
    .canvas-panel { order: -1; padding: 12px; border-radius: 18px; }
    .canvas-header { align-items: center; padding-inline: 0; letter-spacing: 0.06rem; }
    .canvas-footer { padding-inline: 0; }
    .hero-copy, .hud-panel, .telemetry { min-width: 0; }
    .label, .telemetry-row, .hint, .detail { overflow-wrap: anywhere; }
}