:root {
    --app-bg: #f1f3f5;
    --container-bg: #ffffff;
    --text-main: #212529;
    --text-muted: #495057;
    --panel-bg: #f8f9fa;
    --border-color: #dee2e6;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    margin: 15px;
    background-color: var(--app-bg);
    color: var(--text-main);
    transition: background-color 0.2s ease, color 0.2s ease;
}
.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--container-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    box-sizing: border-box;
}
h1 { margin-top: 0; color: var(--text-main); border-bottom: 2px solid var(--border-color); padding-bottom: 8px; margin-bottom: 12px; font-size: 1.6em;}
.master-bar {
    background-color: #e8f5e9;
    border: 1px solid #c8e6c9;
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    box-sizing: border-box;
}
.btn {
    color: white;
    border: none;
    padding: 8px 14px;
    font-size: 0.9em;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-audio { background-color: #2e7d32; }
.btn-audio.playing { background-color: #c62828; }
.btn-add { background-color: #007bc2; }
.btn-add:disabled { background-color: #b0bec5; cursor: not-allowed; }
.btn-rhythm { background-color: #ef6c00; padding: 6px 12px; font-size: 0.85em; }
.btn-rhythm.active { background-color: #ad1457; }
.rhythm-box {
    background-color: #fff3e0;
    border: 1px solid #ffe0b2;
    border-radius: 6px;
    padding: 6px 12px;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 12px;
    flex-grow: 1;
    max-width: fit-content;
}
.rhythm-control { display: flex; flex-direction: column; font-size: 0.75em; color: #e65100; font-weight: bold; }
.rhythm-control select { padding: 2px; border-radius:4px; font-size:11px; cursor:pointer; }
.master-vol-container { display: flex; flex-direction: column; width: 100%; max-width: 180px; flex-shrink: 0; box-sizing: border-box; }
.dashboard { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.wave-panel {
    display: grid;
    grid-template-columns: 140px 1fr 1fr 1fr 140px;
    align-items: center;
    gap: 20px;
    padding: 6px 15px;
    border-radius: 6px;
    background-color: var(--panel-bg);
    border-left: 6px solid #ccc;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    box-sizing: border-box;
}
.wave-panel.muted { background-color: #e9ecef; border-left-color: #90a4ae !important; opacity: 0.45; }
.panel-meta { display: flex; align-items: center; gap: 8px; }
.panel-title { font-weight: bold; font-size: 0.9em; width: 65px; color: var(--text-main); }
.control-group { display: flex; flex-direction: column; width: 100%; }
.control-group label { font-size: 0.75em; color: var(--text-muted); margin-bottom: 2px; display: flex; justify-content: space-between; font-weight: 500; }
.control-group input[type=range] { width: 100%; cursor: pointer; margin: 0; box-sizing: border-box; }
.btn-remove { background-color: #e53935; padding: 6px 12px; font-size: 0.8em; min-width: 90px;}
.stave-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.radio-dot { width: 14px; height: 14px; border-radius: 50%; border: 2px solid #ccc; display: inline-block; }
.fx-rack { grid-column: span 5; background-color: #eceff1; border: 1px dashed #b0bec5; border-radius: 4px; padding: 10px 15px; margin-top: 5px; display: none; }
.btn-icon { background: none; border: none; font-size: 1.2em; cursor: pointer; padding: 4px 8px; color: #546e7a; }
.workspace { display: flex; flex-wrap: wrap; gap: 15px; align-items: flex-start; margin-bottom: 20px; }
.graph-box { background: var(--container-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 10px; box-shadow: 0 2px 5px rgba(0,0,0,0.03); resize: both; overflow: hidden; min-width: 350px; min-height: 200px; flex: 1 1 45%; box-sizing: border-box; }
.graph-title { font-weight: bold; font-size: 0.9em; margin-bottom: 6px; color: var(--text-main); border-bottom: 1px solid var(--border-color); padding-bottom: 2px; }
canvas { display: block; width: 100%; height: calc(100% - 25px); background-color: transparent; }
.studio-deck { background-color: var(--panel-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 15px; display: flex; flex-direction: column; gap: 12px; box-sizing: border-box; }
.deck-section { background: var(--container-bg); border: 1px solid var(--border-color); border-radius: 6px; padding: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.02); box-sizing: border-box; }
.deck-title { font-weight: bold; font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 10px; border-bottom: 2px solid var(--border-color); padding-bottom: 4px; }
.flex-buttons { display: flex; flex-wrap: nowrap !important; gap: 8px; align-items: center; overflow-x: auto; white-space: nowrap; padding-bottom: 4px; width: 100%; box-sizing: border-box; -webkit-overflow-scrolling: touch; }
.flex-buttons::-webkit-scrollbar { height: 4px; }
.flex-buttons::-webkit-scrollbar-thumb { background-color: rgba(0,0,0,0.15); border-radius: 4px; }
.btn-sm { padding: 6px 12px; font-size: 0.8em; border-radius: 4px; flex-shrink: 0; border: none; font-weight: bold; color: white; cursor: pointer; }
.btn-waz { background-color: #388e3c !important; }
.btn-waz-load { background-color: #1976d2 !important; }
.btn-primary { background-color: #007bc2 !important; }
.btn-secondary { background-color: #607d8b !important; }
.btn-skin { background-color: #e0e0e0; color: #333; border: 1px solid #ccc; }
.btn-skin.active { background-color: #1a1a1a !important; color: white !important; }
.btn-like { background-color: #2e7d32 !important; }
.btn-dislike { background-color: #c62828 !important; }
.btn-stats { background-color: #007bc2; font-family: monospace; cursor: default; }
.btn-evolve { background-color: #6a1b9a !important; }
.skin-wrapper-deck { background-color: var(--panel-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 15px; box-sizing: border-box; }
.inline-alert { display: inline-block; margin: 0 0 0 auto; padding: 4px 10px; font-size: 0.78em; border-radius: 4px; flex-shrink: 0; }
.inline-select-group { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.legal-notice { font-size: 0.72em; color: var(--text-muted); text-align: center; margin-top: 15px; border-top: 1px solid var(--border-color); padding-top: 8px; font-style: italic; }
.alert-banner { background-color: #e3f2fd; border: 1px solid #bbdefb; color: #0d47a1; padding: 8px 12px; border-radius: 4px; font-size: 0.8em; font-weight: bold; display: none; margin-bottom: 12px; width: 100%; box-sizing: border-box; }

@media (max-width: 680px) {
    .master-bar { display: grid; grid-template-columns: 1fr; gap: 12px; }
    .rhythm-box { display: flex; flex-wrap: wrap; max-width: 100%; }
    .master-vol-container { max-width: 100%; }
    .btn-audio, .btn-add { width: 100%; }
    .wave-panel { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
}