:root {
    --bg: #101514;
    --panel: rgba(17, 24, 23, 0.92);
    --line: rgba(255, 255, 255, 0.1);
    --text: #edf1ec;
    --muted: #a7b3ac;
    --accent: #d96f32;
    --accent-2: #f0a65b;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background:
        radial-gradient(circle at top, rgba(217, 111, 50, 0.18), transparent 32%),
        linear-gradient(180deg, #16201e 0%, #0f1414 100%);
    color: var(--text);
    font-family: "Trebuchet MS", Verdana, sans-serif;
}

button {
    font: inherit;
}

.viewer-body {
    overflow: hidden;
}

.score-shell {
    position: fixed;
    inset: 0;
    background: #000;
    touch-action: pan-y;
}

.score-image {
    display: block;
    width: 100vw;
    height: 100vh;
    object-fit: contain;
    background: #000;
}

.overlay,
.top-bar,
.bottom-controls {
    position: absolute;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0.12));
}

.overlay {
    top: 0;
    transition: opacity 180ms ease;
}

.overlay.hidden {
    opacity: 0;
}

.top-bar {
    top: 0;
}

.bottom-controls {
    bottom: 0;
    display: flex;
    gap: 12px;
    justify-content: space-between;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.16));
}

.admin-viewer-controls {
    padding: 16px;
}

.overlay-title {
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 0.02em;
}

.overlay-meta {
    font-size: 14px;
    color: var(--muted);
    margin-top: 4px;
}

.ghost-button,
.ghost-link,
.nav-button,
.primary-button,
.secondary-button,
.mini-button {
    border: 0;
    border-radius: 12px;
    padding: 12px 16px;
    color: #fff;
}

.ghost-button {
    margin-top: 10px;
    background: rgba(10, 14, 15, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.24);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
    font-weight: bold;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

.ghost-link,
.secondary-link {
    display: inline-block;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    padding: 12px 16px;
    border-radius: 12px;
}

.overlay-actions {
    margin-top: 10px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-button {
    flex: 1;
    min-height: 60px;
    font-size: 22px;
    background: rgba(255, 255, 255, 0.12);
}

.admin-body {
    overflow-x: hidden;
}

.admin-shell {
    width: min(980px, 100%);
    margin: 0 auto;
    padding: 16px;
}

.panel {
    margin-bottom: 16px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--panel);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.panel h1,
.panel h2 {
    margin-top: 0;
}

.page-head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.page-head-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.action-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.primary-button {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.secondary-button,
.mini-button {
    background: rgba(255, 255, 255, 0.1);
}

.wide-button {
    width: 100%;
    margin-top: 12px;
}

.status-line {
    margin-top: 12px;
    color: var(--muted);
}

.stack-list {
    display: grid;
    gap: 10px;
}

.song-card {
    padding: 12px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
}

.song-name {
    font-weight: bold;
    margin-bottom: 8px;
}

.song-meta {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 8px;
}

.song-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

select {
    width: 100%;
    min-height: 42px;
    padding: 8px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text);
}

.rehearsal-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.rehearsal-row .label {
    flex: 1 1 240px;
}

.control-preview {
    background: #000;
    border-radius: 14px;
    overflow: hidden;
}

.admin-score-image {
    display: block;
    width: 100%;
    max-height: 60vh;
    object-fit: contain;
    background: #000;
}

.control-meta {
    margin: 12px 0;
}

.compact-nav {
    min-height: 52px;
    font-size: 18px;
}

.login-panel {
    max-width: 520px;
    margin: 6vh auto 0;
}

.login-form {
    display: grid;
    gap: 12px;
}

.text-input {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text);
    font: inherit;
}

.error-box {
    margin-bottom: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(217, 111, 50, 0.18);
    border: 1px solid rgba(240, 166, 91, 0.35);
}

@media (max-width: 720px) {
    .overlay-title {
        font-size: 16px;
    }

    .nav-button {
        min-height: 54px;
        font-size: 20px;
    }

    .admin-shell {
        padding: 10px;
    }
}