@font-face {
    font-family: Outfit;
    src: url("/fonts/outfit-v15-latin-regular.woff2") format("woff2");
    font-weight: 400;
    font-display: swap;
}

@font-face {
    font-family: Outfit;
    src: url("/fonts/outfit-v15-latin-700.woff2") format("woff2");
    font-weight: 700;
    font-display: swap;
}

@font-face {
    font-family: Outfit;
    src: url("/fonts/outfit-v15-latin-900.woff2") format("woff2");
    font-weight: 900;
    font-display: swap;
}

:root {
    --bg: #07080d;
    --panel: #11131c;
    --panel-strong: #171a25;
    --line: rgba(255, 255, 255, 0.12);
    --text: #f8fbff;
    --muted: #9aa4b8;
    --cyan: #00f0ff;
    --pink: #ff3e75;
    --blue: #4285f4;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 15% 0%, rgba(0, 240, 255, 0.13), transparent 34%),
        radial-gradient(circle at 86% 12%, rgba(255, 62, 117, 0.13), transparent 34%),
        var(--bg);
    font-family: Outfit, system-ui, sans-serif;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 68px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(7, 8, 13, 0.82);
    backdrop-filter: blur(18px);
}

.brand,
.nav a {
    color: var(--text);
    text-decoration: none;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.brand img {
    width: 34px;
    height: 34px;
}

.nav {
    display: flex;
    gap: 18px;
    margin-left: auto;
}

.nav a {
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
}

.nav a:hover {
    color: var(--cyan);
}

.piano-shell {
    display: grid;
    grid-template-rows: auto auto auto minmax(0, 1fr) auto;
    gap: 14px;
    width: min(1560px, calc(100vw - 28px));
    min-height: calc(100vh - 68px);
    margin: 0 auto;
    padding: 18px 0 24px;
}

.intro-panel,
.toolbar,
.sound-bank,
.canvas-panel,
.hotkey-panel,
.attribution-panel {
    border: 1px solid var(--line);
    background: rgba(17, 19, 28, 0.82);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.intro-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
    gap: 24px;
    padding: 22px;
    border-radius: 18px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--cyan);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    font-size: clamp(34px, 5vw, 62px);
    line-height: 0.94;
}

p {
    margin: 12px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.readout-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.readout-grid div {
    min-width: 0;
    padding: 14px;
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid var(--line);
    border-radius: 14px;
}

.readout-grid span,
.readout-grid strong {
    display: block;
}

.readout-grid span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.readout-grid strong {
    margin-top: 6px;
    overflow: hidden;
    color: var(--cyan);
    font-size: 22px;
    font-weight: 900;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toolbar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px;
    border-radius: 16px;
}

.toolbar .select-control {
    display: none;
}

.sound-bank {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 14px;
    min-height: 86px;
    padding: 14px;
    border-radius: 16px;
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.42), rgba(255, 255, 255, 0.03)),
        rgba(17, 19, 28, 0.9);
}

.sound-bank-tab {
    display: grid;
    place-items: center;
    color: #f8fbff;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03)),
        #12151f;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
    font-size: 14px;
    font-weight: 950;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.sound-bank-tab::before {
    content: "";
    width: 22px;
    height: 18px;
    margin-bottom: 6px;
    border: 2px solid rgba(0, 240, 255, 0.72);
    border-top-width: 5px;
    border-radius: 3px;
    box-shadow: 0 0 18px rgba(0, 240, 255, 0.24);
}

.sound-options {
    display: grid;
    grid-template-columns: repeat(6, minmax(112px, 1fr));
    gap: 10px;
    min-width: 0;
}

.sound-choice {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    min-height: 58px;
    padding: 10px 12px;
    color: var(--muted);
    text-align: left;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.sound-choice span {
    color: rgba(255, 255, 255, 0.45);
    font-size: 11px;
    font-weight: 950;
}

.sound-choice strong {
    overflow: hidden;
    color: inherit;
    font-size: 13px;
    font-weight: 900;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sound-choice:hover,
.sound-choice.active {
    color: #fff;
    border-color: rgba(0, 240, 255, 0.46);
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.16), rgba(255, 255, 255, 0.06));
    box-shadow: 0 0 26px rgba(0, 240, 255, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.sound-choice.active span {
    color: var(--cyan);
}

.sound-choice[data-sample-status]::after {
    grid-column: 2;
    color: rgba(255, 255, 255, 0.58);
    font-size: 10px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.sound-choice[data-sample-status="loading"]::after {
    content: "loading";
    color: #ffd166;
}

.sound-choice[data-sample-status="ready"]::after {
    content: "mp3";
    color: #1ed760;
}

.sound-choice[data-sample-status="failed"]::after {
    content: "fallback";
    color: #ff6b6b;
}

button {
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    font: 900 14px Outfit, system-ui, sans-serif;
}

.primary-btn {
    padding: 0 18px;
    color: #071016;
    background: var(--cyan);
}

.primary-btn.active {
    color: #fff;
    background: linear-gradient(135deg, #1ed760, #11a86b);
    box-shadow: 0 0 0 3px rgba(30, 215, 96, 0.14), 0 0 24px rgba(30, 215, 96, 0.22);
}

.secondary-btn,
.icon-btn {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--line);
}

.secondary-btn {
    padding: 0 18px;
}

.compact-btn {
    padding: 0 14px;
}

.icon-btn {
    width: 44px;
    font-size: 20px;
}

.control-check,
.select-control {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 12px;
    color: var(--muted);
    background: rgba(0, 0, 0, 0.18);
    border: 1px solid var(--line);
    border-radius: 12px;
    font-size: 13px;
    font-weight: 800;
}

.select-control select {
    min-height: 30px;
    max-width: 170px;
    padding: 4px 8px;
    color: #f8fbff;
    background: #080b13;
    border: 1px solid rgba(0, 240, 255, 0.24);
    border-radius: 8px;
    color-scheme: dark;
    font: 800 13px Outfit, system-ui, sans-serif;
    outline: none;
}

.select-control select:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.12);
}

.select-control option {
    color: #f8fbff;
    background: #10131d;
}

.canvas-panel {
    position: relative;
    min-height: 520px;
    overflow: hidden;
    border-radius: 18px;
}

#piano-canvas {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 520px;
    background: #0a0b11;
    cursor: crosshair;
}

.octave-overlay {
    position: absolute;
    top: 50%;
    z-index: 5;
    width: 48px;
    height: 92px;
    min-height: 0;
    transform: translateY(-50%);
    color: #f8fbff;
    background: rgba(7, 8, 13, 0.74);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    font-size: 42px;
    line-height: 1;
    backdrop-filter: blur(12px);
}

.octave-overlay:hover {
    color: var(--cyan);
    border-color: rgba(0, 240, 255, 0.48);
    box-shadow: 0 0 28px rgba(0, 240, 255, 0.18), 0 18px 40px rgba(0, 0, 0, 0.32);
}

.octave-overlay-left {
    left: 14px;
}

.octave-overlay-right {
    right: 14px;
}

.hotkey-panel {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 16px;
}

.hotkey-panel span {
    color: var(--muted);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hotkey-panel code {
    padding: 7px 10px;
    color: #eaf3ff;
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid var(--line);
    border-radius: 10px;
    font-family: Outfit, system-ui, sans-serif;
    font-size: 12px;
    font-weight: 900;
}

.attribution-panel {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 14px;
}

.attribution-panel span {
    flex: 0 0 auto;
    color: var(--cyan);
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.attribution-panel p {
    margin: 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.35;
}

.attribution-panel a {
    margin-left: 8px;
    color: #eaf3ff;
    font-weight: 900;
    text-decoration: none;
}

.attribution-panel a:hover {
    color: var(--cyan);
}

@media (max-width: 900px) {
    .topbar,
    .intro-panel {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-wrap: wrap;
    }

    .nav {
        order: 3;
        width: 100%;
        margin-left: 0;
    }

    .readout-grid {
        grid-template-columns: 1fr;
    }

    .sound-bank {
        grid-template-columns: 1fr;
    }

    .sound-options {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .canvas-panel,
    #piano-canvas {
        min-height: 460px;
    }

    .octave-overlay {
        width: 40px;
        height: 76px;
        font-size: 34px;
    }
}