:root {
    --bg-color: #ffffff;
    --text-color: #535353;
    --text-dark: #202020;
    --accent-color: #00c8ff;
    --danger-color: #ff3366;
    --success-color: #00cc88;
    --surface-color: #f7f7f7;
    --border-color: #cacaca;
    --font-pixel: 'Press Start 2P', monospace;
    --font-main: 'Outfit', sans-serif;
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding: 0;
    background: #f0f0f0;
    font-family: var(--font-main);
    height: 100vh;
    height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#app-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 1024px;
    width: 100%;
    height: 100%;
    max-height: 100dvh;
}

#game-container {
    position: relative;
    width: 100%;
    flex: 1 1 0;
    min-height: 0;
    background: var(--bg-color);
    overflow: hidden;
}

/* ===== CANVAS ===== */
canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ===== TOP BAR ===== */
#top-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 2px solid var(--text-color);
    z-index: 30;
}

.score-area {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.hs-badge {
    font-family: var(--font-pixel);
    font-size: 10px;
    color: #aaa;
}

.hs-badge.hs-new {
    color: #ffc107;
    animation: glow-best 0.8s infinite alternate;
}

@keyframes glow-best {
    from {
        text-shadow: 0 0 4px rgba(255, 193, 7, 0.4);
    }

    to {
        text-shadow: 0 0 10px rgba(255, 193, 7, 0.8);
    }
}

.score-label {
    font-family: var(--font-pixel);
    font-size: 10px;
    color: var(--text-color);
    letter-spacing: 1px;
}

.score-value {
    font-family: var(--font-pixel);
    font-size: 16px;
    color: var(--text-dark);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 16px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
}

.status-indicator.disconnected {
    background: #fff0f0;
    color: var(--danger-color);
}

.status-indicator.connected {
    background: #f0fff8;
    color: var(--success-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

.status-indicator.connected .status-dot {
    animation: none;
}

/* ===== BOTTOM BAR ===== */
#bottom-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    padding: 0 12px;
    background: rgba(255, 255, 255, 0.95);
    border-top: 2px solid var(--text-color);
    z-index: 10;
}

/* Mode Buttons */
.mode-selector {
    display: flex;
    gap: 4px;
    background: var(--surface-color);
    padding: 4px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.mode-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.15s;
    color: var(--text-color);
}

.mode-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}

.mode-btn.active {
    background: var(--text-dark);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Practice Input */
.practice-area {
    flex: 1;
    max-width: 180px;
}

#practice-notes-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 18px;
    font-size: 13px;
    font-family: var(--font-main);
    background: var(--surface-color);
    color: var(--text-dark);
    outline: none;
    transition: all 0.2s;
}

#practice-notes-input:focus {
    border-color: var(--accent-color);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.1);
}

#practice-notes-input::placeholder {
    color: #aaa;
}

/* User Controls (Top Right) */
.user-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    pointer-events: auto;
}

#user-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 0 32px 0 16px;
    /* Vertical centering handled by line-height/flex, padding for arrow */
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    background-color: #fff;
    border: 2px solid var(--text-dark);
    border-radius: 20px;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23202020' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 14px;
    height: 36px;
    outline: none;
    transition: all 0.2s;
    min-width: 140px;
}

#user-select:hover {
    background-color: var(--surface-color);
}

#user-select:focus {
    border-color: var(--accent-color);
}

#add-user-btn {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 50%;
    border: 2px solid var(--text-dark);
    background: #fff;
    color: var(--text-dark);
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    padding: 0;
    padding-bottom: 2px;
    /* Visual center adjustment */
    line-height: 1;
}

#add-user-btn:hover {
    background: var(--text-dark);
    color: #fff;
    transform: scale(1.05);
}

#lang-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 0 24px 0 12px;
    font-family: var(--font-pixel);
    font-size: 10px;
    font-weight: 700;
    color: var(--text-dark);
    background-color: #fff;
    border: 2px solid var(--text-dark);
    border-radius: 12px;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23202020' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 10px;
    height: 36px;
    outline: none;
    transition: all 0.2s;
    min-width: 60px;
}

#lang-select:hover {
    background-color: var(--surface-color);
}

#lang-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 0 24px 0 12px;
    font-family: var(--font-pixel);
    font-size: 10px;
    font-weight: 700;
    color: var(--text-dark);
    background-color: #fff;
    border: 2px solid var(--text-dark);
    border-radius: 12px;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23202020' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 10px;
    height: 36px;
    outline: none;
    transition: all 0.2s;
    min-width: 60px;
}

#lang-select:hover {
    background-color: var(--surface-color);
}

#add-user-btn:hover {
    background: var(--text-dark);
    color: #fff;
    transform: scale(1.05);
}

/* Start Button */
.start-btn {
    width: auto;
    height: auto;
    padding: 12px 32px;
    border-radius: 24px;
    border: 2px solid var(--text-dark);
    background: #fff;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-pixel);
    letter-spacing: 1px;
}

.start-btn:hover {
    background: var(--text-dark);
    color: #fff;
}

.start-btn:active {
    transform: scale(0.95);
}

/* Icon Button (audio toggle) */
.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    border-color: var(--text-color);
}

.icon-btn.active {
    background: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
}

/* Speed Selector (three animal icons) */
.speed-selector {
    display: flex;
    gap: 2px;
    background: var(--surface-color);
    padding: 3px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.speed-btn {
    width: 32px;
    height: 30px;
    border: none;
    background: transparent;
    border-radius: 16px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.45;
}

.speed-btn:hover {
    opacity: 0.75;
    background: rgba(0, 0, 0, 0.05);
}

.speed-btn.active {
    opacity: 1;
    background: var(--text-dark);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

/* ===== START SCREEN ===== */
#start-screen {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.98);
    z-index: 20;
    gap: 24px;
}

#start-screen.hidden {
    display: none;
}

.connect-piano-btn {
    font-family: var(--font-pixel);
    font-size: 12px;
    padding: 16px 32px;
    border: 2px solid var(--text-dark);
    background: #fff;
    cursor: pointer;
    letter-spacing: 1px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    /* Prevent iOS double-tap zoom */
    touch-action: manipulation;
}

/* Only apply hover effects on devices with hover capability (mouse/trackpad) */
@media (hover: hover) {
    .connect-piano-btn:hover {
        background: var(--text-dark);
        color: #fff;
        transform: scale(1.02);
    }
}

.connect-piano-btn:active {
    transform: scale(0.98);
}

.connect-piano-btn.connected {
    background: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
}

.connect-piano-btn.connected:hover {
    background: #00aa70;
}

.game-logo {
    font-family: var(--font-pixel);
    font-size: 24px;
    color: var(--text-dark);
    margin: 0;
    letter-spacing: 2px;
}

.start-hint {
    font-size: 14px;
    color: var(--text-color);
    animation: blink 1.5s infinite;
}

@keyframes blink {

    0%,
    50%,
    100% {
        opacity: 1;
    }

    25%,
    75% {
        opacity: 0.3;
    }
}

.mode-labels {
    display: flex;
    gap: 24px;
    font-size: 12px;
    color: #888;
}

.mode-labels span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ===== GAME OVER SCREEN ===== */
#game-over-screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.98);
    padding: 32px 48px;
    border-radius: 4px;
    border: 2px solid var(--text-dark);
    text-align: center;
    z-index: 25;
}

#game-over-screen.hidden {
    display: none;
}

.game-over-title {
    font-family: var(--font-pixel);
    font-size: 18px;
    color: var(--text-dark);
    margin: 0 0 24px 0;
    letter-spacing: 2px;
}

.final-score-display {
    margin-bottom: 24px;
}

.final-score-label {
    display: block;
    font-family: var(--font-pixel);
    font-size: 10px;
    color: var(--text-color);
    margin-bottom: 4px;
}

.final-score-value {
    font-family: var(--font-pixel);
    font-size: 32px;
    color: var(--text-dark);
}

#high-score-display {
    margin-bottom: 24px;
}

.hs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 11px;
}

.hs-table th {
    font-family: var(--font-pixel);
    font-size: 8px;
    color: var(--text-color);
    padding: 6px 8px;
    border-bottom: 1px solid var(--border-color);
}

.hs-table td {
    padding: 6px 8px;
    color: var(--text-dark);
}

.hs-row-current {
    background: rgba(0, 200, 255, 0.1);
}

.hs-star {
    color: #ffc107;
    margin-left: 2px;
}

.restart-btn {
    font-family: var(--font-pixel);
    font-size: 10px;
    padding: 12px 24px;
    border: 2px solid var(--text-dark);
    background: #fff;
    cursor: pointer;
    letter-spacing: 1px;
    transition: all 0.15s;
}

.restart-btn:hover {
    background: var(--text-dark);
    color: #fff;
}

.restart-hint {
    font-size: 11px;
    color: #999;
    margin: 16px 0 0 0;
}

/* ===== PRACTICE PROGRESS ===== */
#practice-progress {
    position: absolute;
    top: 56px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-dark);
    color: #fff;
    font-family: var(--font-pixel);
    font-size: 9px;
    padding: 6px 14px;
    border-radius: 12px;
    z-index: 15;
    display: none;
    letter-spacing: 0.5px;
}

#practice-progress.visible {
    display: block;
}

/* ===== MIDI MODAL ===== */
#midi-searching-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 100;
    justify-content: center;
    align-items: center;
}

.modal-content {
    text-align: center;
    color: #fff;
}

.modal-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.modal-content h3 {
    font-family: var(--font-pixel);
    font-size: 14px;
    margin: 0 0 12px 0;
}

.modal-content p {
    font-size: 14px;
    color: #aaa;
    margin: 0 0 24px 0;
}

.btn-secondary {
    padding: 10px 20px;
    border: 1px solid #fff;
    background: transparent;
    color: #fff;
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #fff;
    color: #000;
}

/* ===== DEBUG CONSOLE ===== */
#debug-console {
    display: none;
    position: absolute;
    bottom: 56px;
    left: 0;
    right: 0;
    height: 120px;
    background: rgba(0, 0, 0, 0.9);
    color: #0f0;
    font-family: monospace;
    font-size: 11px;
    padding: 8px;
    overflow-y: auto;
    z-index: 50;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .game-logo {
        font-size: 16px;
    }

    .practice-area {
        max-width: 120px;
    }

    #practice-notes-input {
        padding: 6px 10px;
        font-size: 12px;
    }

    .mode-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .user-btn {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }

    .start-btn {
        width: 40px;
        height: 40px;
    }

    #bottom-bar {
        gap: 8px;
        padding: 0 8px;
    }

    #game-over-screen {
        padding: 24px 32px;
    }

    .game-over-title {
        font-size: 14px;
    }

    .final-score-value {
        font-size: 24px;
    }
}

/* ===== VIRTUAL KEYBOARD ===== */
#keyboard-area {
    width: 100%;
    flex-shrink: 0;
}

.vk-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 8px 8px 10px;
    background: #f7f7f7;
    border-top: 2px solid var(--border-color);
}

.vk-keyboard {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
}

.vk-row {
    display: flex;
    gap: 3px;
}

/* Stagger rows like a real keyboard */
.vk-row:nth-child(2) {
    margin-left: 18px;
}

.vk-key {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 32px;
    border: 1.5px solid #bbb;
    border-radius: 5px;
    background: #fff;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    position: relative;
    transition: all 0.12s ease;
    text-transform: lowercase;
    user-select: none;
}

/* Small finger-color dot at bottom-right of each key */
.vk-key::after {
    content: '';
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--finger-color, transparent);
    opacity: 0.45;
}

/* Home row bumps (f and j) */
.vk-key.vk-home::before {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 2px;
    border-radius: 1px;
    background: #aaa;
}

/* Space bar */
.vk-key.vk-space {
    width: 220px;
    font-size: 10px;
    font-family: var(--font-pixel);
    letter-spacing: 2px;
    color: #999;
}

/* Active / highlighted key */
.vk-key.vk-active {
    background: var(--active-color, var(--accent-color));
    color: #fff;
    border-color: var(--active-color, var(--accent-color));
    transform: scale(1.15);
    box-shadow: 0 0 12px color-mix(in srgb, var(--active-color, var(--accent-color)) 60%, transparent);
    z-index: 2;
}

.vk-key.vk-active::after {
    display: none;
}

/* Correct / wrong flash */
.vk-key.vk-correct {
    border-color: #00cc88;
    box-shadow: 0 0 8px rgba(0, 204, 136, 0.6);
    background: #e6fff5;
}

.vk-key.vk-wrong {
    border-color: #ff3366;
    box-shadow: 0 0 8px rgba(255, 51, 102, 0.5);
    background: #fff0f3;
    animation: shake 0.3s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-3px);
    }

    75% {
        transform: translateX(3px);
    }
}

/* Shift key */
.vk-key.vk-shift {
    width: 25px;
    font-size: 11px;
    color: #777;
}

/* Word-complete celebration wave */
.vk-key.vk-celebrate {
    background: #b8f5d8;
    border-color: #00cc88;
    transform: scale(1.1);
    transition: all 0.1s ease;
}

/* ===== HAND LEGEND ===== */
.vk-hand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 28px;
}

.vk-hand-title {
    font-family: var(--font-pixel);
    font-size: 10px;
    color: var(--text-color);
    margin-bottom: 2px;
}

.vk-finger-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    font-family: var(--font-main);
}

/* Responsive adjustments for keyboard */
@media (max-width: 600px) {
    .vk-key {
        width: 26px;
        height: 26px;
        font-size: 11px;
    }

    .vk-key.vk-space {
        width: 140px;
        font-size: 8px;
    }

    .vk-area {
        gap: 6px;
        padding: 6px 4px 8px;
    }

    .vk-finger-dot {
        width: 16px;
        height: 16px;
        font-size: 8px;
    }
}