:root {
    --bg: #f5f5f4;
    --text: #222222;
    --muted-text: #6b6b6b;
    --card-bg: #ffffff;
    --border: #e0e0e0;
    --accent: #333333;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.page-header {
    padding: 1.5rem 1rem 0.5rem;
    text-align: center;
}

.page-header h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

main {
    padding: 1rem;
    max-width: 1100px;
    margin: 0 auto;
}

.board {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.9rem;
}

.empty-msg {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--muted-text);
    padding: 2rem 0;
}

/* --- Sound buttons --- */

.sound-btn {
    position: relative;
    background-color: var(--btn-color, #888888);
    color: var(--btn-text, #ffffff);
    border: none;
    border-radius: 14px;
    padding: 1.1rem 0.9rem;
    min-height: 72px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    filter: brightness(0.8) saturate(0.75);
    transition: filter 0.15s ease, transform 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    -webkit-tap-highlight-color: transparent;
}

.sound-btn:hover {
    filter: brightness(0.9) saturate(0.85);
}

.sound-btn:active {
    transform: scale(0.97);
}

.sound-btn.playing {
    filter: brightness(1.08) saturate(1.15);
    transform: scale(1.02);
}

.btn-label {
    word-break: break-word;
    line-height: 1.25;
}

.playing-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--btn-text, #ffffff);
    opacity: 0;
    transform: scale(0.4);
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.sound-btn.playing .playing-dot {
    opacity: 0.9;
    transform: scale(1);
}

.page-footer {
    text-align: center;
    padding: 1.5rem 1rem 2.5rem;
}

.admin-link {
    color: var(--muted-text);
    text-decoration: none;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

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

/* --- Admin page --- */

.admin-wrap {
    max-width: 480px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.admin-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.admin-card h2 {
    margin-top: 0;
    font-size: 1.15rem;
}

.field {
    margin-bottom: 1rem;
}

.field label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted-text);
    margin-bottom: 0.3rem;
}

.field input[type="text"],
.field input[type="password"],
.field input[type="file"] {
    width: 100%;
    padding: 0.55rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    background: #fff;
    color: var(--text);
}

.field input[type="color"] {
    width: 100%;
    height: 42px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}

.btn-primary {
    width: 100%;
    padding: 0.65rem 0.6rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary:hover {
    background: #111111;
}

.msg {
    padding: 0.7rem 0.9rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.msg-error {
    background: #fdecea;
    color: #8a2c25;
    border: 1px solid #f4c6c1;
}

.msg-success {
    background: #eaf6ec;
    color: #276437;
    border: 1px solid #c8e6cb;
}

.sound-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sound-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.sound-list li:last-child {
    border-bottom: none;
}

.sound-swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 4px;
    margin-right: 0.5rem;
    vertical-align: middle;
    border: 1px solid var(--border);
}

.delete-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--muted-text);
    border-radius: 6px;
    padding: 0.25rem 0.55rem;
    font-size: 0.8rem;
    cursor: pointer;
}

.delete-btn:hover {
    color: #8a2c25;
    border-color: #f4c6c1;
}

.top-link {
    display: block;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--muted-text);
    font-size: 0.9rem;
    text-decoration: none;
}

@media (max-width: 400px) {
    .board {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}