/*
 * Palette after Hatsune Miku: #39c5bb hair teal, #e12885 ribbon pink, #373b3e / #bec8d1 greys.
 * Every colour is a light-dark() pair; [data-theme] pins the scheme, otherwise it follows the OS.
 */
:root {
    color-scheme: light dark;

    --bg: light-dark(#f3f8f8, #121719);
    --surface: light-dark(#ffffff, #1b2225);
    --surface-sunken: light-dark(#f5f9f9, #161c1f);
    --field: light-dark(#fbfdfd, #151b1e);
    --hover: light-dark(#ecf6f5, #232d31);

    --text: light-dark(#373b3e, #dfe8ea);
    --text-strong: light-dark(#23282b, #f4f8f9);
    --text-soft: light-dark(#55616a, #b2c0c6);
    --muted: light-dark(#66737b, #91a0a8);
    --faint: light-dark(#9aa7ae, #64727a);

    --line: light-dark(#dbe5e8, #2b3539);
    --line-soft: light-dark(#eaf1f2, #222a2e);
    --control-border: light-dark(#cbd7db, #3a474c);

    --primary: #39c5bb;
    --primary-hover: light-dark(#2eb3a9, #55d4ca);
    --primary-text: light-dark(#137a7f, #86cecb);
    --primary-soft: light-dark(#e1f5f3, #17393a);
    --on-primary: #08302d;

    --accent: light-dark(#e12885, #ff5fa8);
    --accent-soft: light-dark(#fde8f2, #3b1a2b);

    --success: light-dark(#2e9466, #4fc48d);
    --success-soft: light-dark(#e1f3ea, #173326);
    --warning: light-dark(#a8701c, #e3aa4f);
    --warning-soft: light-dark(#fff6e6, #382c16);
    --danger: light-dark(#cc3f45, #ff7a7f);
    --danger-soft: light-dark(#fdeced, #3d1c1f);
    --info: light-dark(#4a6aa5, #8fb0e8);
    --info-soft: light-dark(#ebf0fa, #1d2840);

    --cue-1: light-dark(#e12885, #ff5fa8);
    --cue-2: light-dark(#3d82d6, #6aa7f0);
    --cue-3: light-dark(#8a5cd0, #b08cf0);
    --cue-4: light-dark(#d08420, #f0aa4a);

    --grade-300: var(--primary);
    --grade-100: var(--success);
    --grade-50: var(--warning);
    --grade-miss: var(--danger);
    --press: var(--muted);

    --key-face: light-dark(#f4f7f8, #283034);
    --key-rim: light-dark(#c3cdd2, #48545a);
    --key-label: light-dark(#a5b1b7, #7c8a91);
    --key-drop: light-dark(#2d373b26, #00000080);
    --key-gloss: light-dark(#ffffffb8, #ffffff14);
    --key-inset: light-dark(#2d373b14, #00000040);

    --shadow: light-dark(#373b3e22, #00000070);
    --backdrop: light-dark(#1c2a2955, #000000a0);
    --focus-ring: color-mix(in srgb, var(--primary) 60%, transparent);

    --mono: "Cascadia Code", Consolas, monospace;

    font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
    color: var(--text);
    background: var(--bg);
    font-synthesis: none;
}

:root[data-theme="light"] {
    color-scheme: light;
}

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

* {
    box-sizing: border-box;
}

body {
    margin: 0;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 40px;
    padding: 9px 15px;
    background: var(--surface);
    border: 1px solid var(--control-border);
    border-radius: 7px;
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}

button:hover,
.button:hover {
    border-color: var(--primary);
    background: var(--hover);
}

button:disabled {
    opacity: 0.45;
    cursor: default;
}

button.primary {
    color: var(--on-primary);
    background: var(--primary);
    border-color: var(--primary);
    font-weight: 600;
}

button.primary:hover {
    border-color: var(--primary-hover);
    background: var(--primary-hover);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
}

input,
select,
textarea {
    background: var(--field);
    border: 1px solid var(--control-border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--text);
    min-height: 40px;
    min-width: 0;
    max-width: 100%;
}

textarea {
    font-family: var(--mono), monospace;
    resize: vertical;
    width: 100%;
    line-height: 1.7;
}

input[type="number"] {
    width: 100%;
}

label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 12px;
    color: var(--text-soft);
    margin: 14px 0;
}

pre,
code {
    font-family: var(--mono), monospace;
    font-size: 12px;
}

pre {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    background: var(--surface-sunken);
    border-radius: 6px;
    padding: 13px;
    line-height: 1.8;
    margin: 14px 0 0;
}

h2,
p {
    margin-top: 0;
}

h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

p {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.muted {
    color: var(--muted);
}

[hidden] {
    display: none !important;
}

.connection {
    margin-left: auto;
    font-size: 12px;
    display: flex;
    gap: 8px;
    align-items: center;
}

.connection i,
.legend-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--faint);
}

.connection i.ready {
    background: var(--success);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 15%, transparent);
}

.connection i.error {
    background: var(--danger);
}

main {
    max-width: 1328px;
    margin: auto;
    padding: 0 24px;
}

.app-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--primary-text);
}

.brand::before {
    content: "";
    width: 1.375em;
    height: 1.375em;
    background: url("../favicon.svg") center / contain no-repeat;
}

.app-settings {
    display: flex;
    gap: 8px;
}

.app-settings select {
    min-height: 32px;
    padding: 4px 30px 4px 10px;
    font-size: 12px;
    background-position: right 8px center;
}

.tabs {
    display: flex;
    gap: 32px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 24px;
}

.tabs button {
    border: 0;
    border-radius: 0;
    background: none;
    padding: 13px 0 17px;
    font-size: 13px;
    color: var(--muted);
    border-bottom: 2px solid transparent;
}

.tabs button.selected {
    color: var(--text-strong);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 11px;
    padding: 24px;
}