@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;700&display=swap');

:root {
    --color-bg: #0d0d1a;
    --color-primary: #00aaff;
    --color-primary-dim: #0055aa;
    --color-primary-bright: #88ddff;
    --color-accent: #ffaa00;
    --color-accent-dim: #aa7700;
    --color-secondary: #00ffcc;
    --color-text: #e0e0e0;
    --color-text-dim: #888888;
    --font-mono: 'Roboto Mono', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--color-bg);
    font-family: var(--font-mono);
    letter-spacing: 1px;
    color: var(--color-text);
}

#app-container {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* ── top bar: controls hint + README ───────────────── */
.controls-hint {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 12px 16px;
    margin-bottom: 4px;
}

.controls-hint span {
    color: var(--color-text-dim);
    font-size: 14px;
    letter-spacing: 1px;
}

/* ── car selector row ─────────────────────────────── */
#car-selector {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 16px;
    margin-bottom: 8px;
}

#car-selector label {
    color: var(--color-text-dim);
    font-size: 13px;
    letter-spacing: 1px;
}

#carSelect {
    font-family: var(--font-mono);
    font-size: 14px;
    background: var(--color-bg);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-dim);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#carSelect:hover {
    border-color: var(--color-primary);
}

#carSelect:focus {
    outline: none;
    box-shadow: 0 0 8px rgba(0, 170, 255, 0.3);
}

#carSelect option {
    background: var(--color-bg);
    color: var(--color-text);
}

/* ── buttons ──────────────────────────────────────── */
.ui-button {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 1px;
    background: var(--color-bg);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-dim);
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.ui-button:hover {
    color: var(--color-primary-bright);
    border-color: var(--color-primary);
    box-shadow: 0 0 8px rgba(0, 170, 255, 0.25);
}

.ui-button:focus {
    outline: none;
    box-shadow: 0 0 8px rgba(0, 170, 255, 0.4);
}

/* ── sound toggle ─────────────────────────────────── */
.sound-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--color-text-dim);
    font-size: 13px;
    letter-spacing: 1px;
}

.sound-toggle input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-primary-dim);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.sound-toggle input[type="checkbox"]:checked {
    border-color: var(--color-primary);
    box-shadow: 0 0 6px rgba(0, 170, 255, 0.3);
}

.sound-toggle input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid var(--color-primary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.sound-toggle span {
    color: var(--color-text-dim);
}

.sound-toggle input[type="checkbox"]:checked + span {
    color: var(--color-primary);
}

/* ── canvas ───────────────────────────────────────── */
#canvas {
    display: block;
    border: 1px solid var(--color-primary-dim);
    border-radius: 8px;
    opacity: 0.95;
}

/* ── Modal (README) ────────────────────────────────── */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 13, 26, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(6px);
}

.modal-content {
    background: rgba(8, 8, 16, 0.95);
    border: 1px solid var(--color-primary-dim);
    border-radius: 10px;
    padding: 24px 28px;
    width: 600px;
    max-width: 95vw;
    max-height: 85vh;
    overflow-y: auto;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    box-shadow: 0 0 30px rgba(0, 170, 255, 0.08), inset 0 0 60px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
    margin: 0 0 16px 0;
    font-size: 16px;
    color: var(--color-primary);
    letter-spacing: 1px;
}

#readme-content p,
#readme-content li {
    color: var(--color-text);
}

#readme-content strong {
    color: var(--color-primary-bright);
}

#readme-content ol {
    padding-left: 1.4em;
    margin: 0.6em 0;
}

#readme-content li {
    margin-bottom: 0.5em;
}

#readme-content ul {
    padding-left: 1.2em;
    margin: 0.4em 0;
}

.modal-actions {
    margin-top: 20px;
}

.modal-actions .ui-button {
    margin-left: 0;
}

.hidden {
    display: none !important;
}