:root {
    color-scheme: dark;
    --bg: #0b111a;
    --panel: #121a26;
    --panel-soft: #0f1724;
    --ink: #7bffea;
    --accent: #ff7d9c;
    --accent-2: #ffd166;
    --text: #eaf2ff;
    --muted: #9bb0d1;
    --grid: rgba(130, 160, 210, 0.2);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "IBM Plex Mono", "Segoe UI", "Helvetica Neue", Arial, monospace;
    background: radial-gradient(circle at top, #162235, #0b111a 55%);
    color: var(--text);
}

.shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px 48px;
}

.hero {
    margin-bottom: 24px;
}

.back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.back:hover {
    color: var(--text);
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid rgba(123, 255, 234, 0.4);
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.7rem;
    margin-bottom: 12px;
}

.hero h1 {
    font-size: 2.4rem;
    margin: 0 0 8px;
}

.subtitle {
    color: var(--muted);
    margin: 0;
}

.workbench {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.panel {
    background: linear-gradient(160deg, rgba(21, 30, 46, 0.94), rgba(10, 16, 28, 0.94));
    border: 1px solid rgba(123, 255, 234, 0.15);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 18px 35px rgba(4, 10, 18, 0.6);
}

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

.panel-header h2 {
    font-size: 1.1rem;
    margin: 0;
}

.mode {
    display: flex;
    gap: 8px;
}

canvas {
    display: block;
    width: 100%;
    border-radius: 12px;
    background: #0a101a;
    border: 1px solid rgba(123, 255, 234, 0.18);
}

#glyph {
    max-width: 360px;
    margin: 0 auto 16px;
    image-rendering: pixelated;
}

.editor-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.btn,
.chip {
    border: 1px solid rgba(123, 255, 234, 0.3);
    background: rgba(16, 26, 40, 0.8);
    color: var(--text);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: transform 0.1s ease, border 0.2s ease, background 0.2s ease;
}

.btn:hover,
.chip:hover {
    border-color: rgba(255, 209, 102, 0.7);
    transform: translateY(-1px);
}

.btn.ghost,
.chip.ghost {
    background: rgba(12, 18, 30, 0.4);
    border-color: rgba(155, 176, 209, 0.35);
    color: var(--muted);
}

.chip.active {
    background: rgba(123, 255, 234, 0.15);
    color: var(--ink);
    border-color: rgba(123, 255, 234, 0.6);
}

.palette .label {
    font-size: 0.8rem;
    color: var(--muted);
    margin-right: 6px;
}

.swatch {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: var(--swatch);
    cursor: pointer;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
    transition: transform 0.1s ease, border 0.2s ease;
}

.swatch.active {
    border-color: #fff;
    transform: scale(1.08);
}

.preview .screen {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
}

.preview canvas {
    width: 100%;
    height: auto;
    image-rendering: pixelated;
}

.scanlines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.18),
        rgba(0, 0, 0, 0.18) 2px,
        rgba(0, 0, 0, 0) 2px,
        rgba(0, 0, 0, 0) 4px
    );
    mix-blend-mode: soft-light;
    pointer-events: none;
}

.slot {
    font-size: 0.8rem;
    color: var(--muted);
    letter-spacing: 0.1em;
}

.readout {
    background: var(--panel-soft);
    border: 1px solid rgba(123, 255, 234, 0.12);
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 12px;
}

.readout-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--muted);
}

.readout code {
    display: block;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.9rem;
    color: var(--ink);
    word-break: break-all;
}

.status {
    font-size: 0.85rem;
    color: var(--accent-2);
    margin-bottom: 12px;
}

.tips {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.5;
}

.tips ul {
    padding-left: 18px;
    margin: 6px 0 0;
}

.footer {
    margin-top: 26px;
    color: var(--muted);
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    .shell {
        padding: 24px 16px 40px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    #glyph {
        max-width: 100%;
    }
}