* {
        box-sizing: border-box;
    }

    :root {
        --bg: #0b0c10;
        --panel: #15171d;
        --ink: #e8eaf0;
        --muted: #9aa3b2;
        --accent: #4fc3f7;
        --accent-hover: #5fd6ff;
        --accent-active: #38b6e9;
        --border: #212531;
        --border-light: #2c3140;
        --header-border: #1f232b;
        --table-border: #242938;
        --table-header: #131722;
        --input-bg: #0f1117;
        --ok: #b7ff7a;
        --err: #ff7b7b;
        --button-shadow: 0 2px 8px 0 #4fc3f722;
        --button-shadow-hover: 0 4px 16px 0 #4fc3f744;
    }

    html, body {
        height: 100%;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--ink);
        font: 15px/1.5 system-ui, Segoe UI, Roboto, Inter, Helvetica, Arial, sans-serif;
    }

    header {
        padding: 10px 28px;
        border-bottom: 1px solid var(--header-border);
        display: flex;
        gap: 16px;
        align-items: center;
        background: var(--panel);
    }

    h1 {
        font-size: 20px;
        margin: 0;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    main {
        display: grid;
        grid-template-columns: 360px 1fr;
        gap: 24px;
        padding: 24px;
    }

    .card {
        background: var(--panel);
        border: 1px solid var(--border);
        border-radius: 16px;
        box-shadow: 0 2px 8px 0 #0002;
        overflow: hidden;
        transition: box-shadow 0.2s;
    }

    .card:hover {
        box-shadow: 0 4px 16px 0 #0004;
    }

    .card header {
        padding: 14px 20px;
        font-weight: 500;
        font-size: 16px;
        border-bottom: 1px solid var(--border-light);
        background: var(--bg);
    }

    .card section {
        padding: 16px 20px 32px;
    }

    label {
        display: block;
        margin: 12px 0 6px;
        color: var(--muted);
        font-size: 13px;
        font-weight: 500;
        letter-spacing: 0.2px;
    }

    input,
    button {
        width: 100%;
        padding: 12px 14px;
        border-radius: 10px;
        border: 1px solid var(--border-light);
        background: var(--input-bg);
        color: var(--ink);
        font-size: 15px;
        transition: border 0.2s, box-shadow 0.2s;
    }

    input:focus,
    button:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 2px #4fc3f733;
    }

    button {
        cursor: pointer;
        background: var(--accent);
        color: #fff;
        font-weight: 600;
        border: none;
        box-shadow: var(--button-shadow);
        transition: background 0.2s, box-shadow 0.2s, opacity 0.2s;
    }

    button:hover:not(:disabled) {
        background: var(--accent-hover);
        box-shadow: var(--button-shadow-hover);
        opacity: 0.97;
    }

    button:active:not(:disabled) {
        background: var(--accent-active);
    }

    button:disabled {
        opacity: 0.6;
        cursor: not-allowed;
        box-shadow: none;
    }

    button#playPause {
        width: 220px;
    }

    .row {
        /* display: grid; */
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .log {
        font-family: ui-monospace, Menlo, Consolas, monospace;
        font-size: 13px;
        word-wrap: break-word;
        background: var(--input-bg);
        border-radius: 10px;
        border: 1px solid var(--border-light);
        padding: 12px;
        height: 200px;
        overflow: auto;
        white-space: pre-wrap;
        color: var(--ink);
        /* Modern scrollbar styles */
        scrollbar-width: thin;
        scrollbar-color: var(--accent) var(--input-bg);
    }

    .scrolly {
        scrollbar-width: thin;
        scrollbar-color: var(--accent) var(--input-bg);
    }
    
    .scrolly::-webkit-scrollbar, .log::-webkit-scrollbar {
        width: 8px;
        background: var(--input-bg);
        border-radius: 10px;
    }

    .scrolly::-webkit-scrollbar-thumb, .log::-webkit-scrollbar-thumb {
        background: var(--accent);
        border-radius: 8px;
        min-height: 24px;
    }

    .scrolly::-webkit-scrollbar-thumb:hover, .log::-webkit-scrollbar-thumb:hover {
        background: var(--accent-hover);
    }

    table {
        width: 100%;
        border-collapse: collapse;
        background: var(--panel);
        /* border-radius: 10px; */
        overflow: hidden;
    }

    th, td {
        border-bottom: 1px solid var(--table-border);
        padding: 8px 12px;
        font-size: 14px;
    }

    th {
        position: sticky;
        top: 0;
        background: var(--table-header);
        text-align: left;
        font-weight: 600;
        color: var(--accent);
        z-index: 1;
    }

    #sprite-costumes td {
        padding: 1px 12px;
        vertical-align: top;
    }

    .out {
        height: 200px;
    }

    .err {
        color: var(--err);
        font-weight: 600;
    }

    .ok {
        color: var(--ok);
        font-weight: 600;
    }

    small.muted {
        color: var(--muted);
        font-size: 12px;
        letter-spacing: 0.1px;
    }

    #openUpload {
        display: none;
    }

    #mouthImg {
        display:block;
        max-width: 180px;
        padding: 32px;
        zoom: 2;
    }

    #mouth-section>div {
        /* padding: 12px 14px; */
        height: 200px;
        overflow: hidden;
        display: flex;
        align-content: center;
        justify-content: center;
        align-items: center;
        background: #eee;
        border-radius: 16px;
    }

  /* optional: row hover + selected styles */
  table { width: 100%; border-collapse: collapse; }
  th, table.hasHover td { padding: 8px 10px; border-bottom: 1px solid #eee; }
  table.hasHover td { background: #ffffff1a; }
  table.hasHover tr:hover { background: #38b7e946; cursor: pointer; }
  tr.selected { background: #309cc6 !important; }
  /* tr:hover>td, tr.selected>td { color: #111; } */

  .muted { color:#6b7280; font-size:12px; }
  .badge { display:inline-block; font-size:11px; padding:2px 6px; border:1px solid #e5e7eb; border-radius:999px; /* background:#f9fafb; */ margin-left:6px; }

#btnSave {
    display: inline-flex;
    justify-content: center;
    align-items: baseline;

    &>*  { padding: 0 8px; white-space: nowrap; }
}

.save-feedback {
    display: block;
    width: 0;
    overflow: hidden;
    transition: all 0.4s;
    padding: 0 !important;
}