:root {
  --bg: #0a1117; --panel: #111b23; --panel-2: #172530; --rule: #22374a; --rule-2: #2c4559;
  --ink: #e8f0f4; --ink-2: #a9bcc6; --ink-3: #6f8592; --accent: #4aa3ff; --danger: #ff6b6b; --gold: #ffd666;
  --head-w: 96px; --ruler-h: 34px; --lane-v: 66px; --lane-a: 74px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--ink); font: 14px/1.4 Archivo, system-ui, sans-serif; overflow: hidden; }
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.small { font-size: 12px; }
.muted { color: var(--ink-3); }
.grow { flex: 1; }
[hidden] { display: none !important; }

/* barre di scorrimento scure e sottili, come il resto dell'editor */
* { scrollbar-width: thin; scrollbar-color: var(--rule-2) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--rule-2); border-radius: 6px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background-color: var(--ink-3); }
::-webkit-scrollbar-button { display: none; }
::-webkit-scrollbar-corner { background: transparent; }

/* ── barra in alto ── */
.bar { display: flex; align-items: center; gap: 8px; height: 48px; padding: 0 12px; border-bottom: 1px solid var(--rule); background: var(--panel); }
.back { color: var(--ink-2); text-decoration: none; }
.back:hover { color: var(--ink); }
.brand { text-transform: uppercase; letter-spacing: .12em; font-weight: 900; font-stretch: 115%; margin-left: 8px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--rule-2); background: var(--panel-2); color: var(--ink); padding: 6px 10px; border-radius: 7px; font: inherit; font-size: 13px; cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover:not(:disabled) { border-color: var(--ink-3); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #04121f; font-weight: 700; }
.btn.danger { color: var(--danger); }
.btn.icon { width: 34px; height: 32px; padding: 0; font-size: 15px; }
.btn.small { padding: 4px 8px; font-size: 12px; }
.btn.wide { width: 100%; }
.btn.on { border-color: var(--accent); color: var(--accent); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .clip:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ── area di lavoro ── */
.app { display: grid; height: calc(100vh - 48px); grid-template-columns: 220px minmax(0, 1fr) 340px; grid-template-rows: minmax(0, 1fr) auto; grid-template-areas: "lib viewer insp" "tl tl tl"; }
.lib { grid-area: lib; border-right: 1px solid var(--rule); padding: 10px 12px; overflow-x: hidden; overflow-y: auto; background: var(--panel); }
.viewer { grid-area: viewer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 10px; min-height: 0; }
.insp { grid-area: insp; border-left: 1px solid var(--rule); padding: 10px 14px; overflow-x: hidden; overflow-y: auto; background: var(--panel); }
.tl { grid-area: tl; border-top: 1px solid var(--rule); background: var(--panel); padding: 6px 10px 4px; }

h2 { font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); margin: 6px 0 6px; font-weight: 800; }
.lib h2 + p { margin: 0 0 8px; }
.lib-views { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.lib-group { font-size: 10px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-3); margin: 8px 0 2px; }
.tile { display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 8px; padding: 5px 6px; border-radius: 7px; border: 1px solid transparent; background: var(--panel-2); cursor: grab; user-select: none; text-align: left; color: var(--ink); font: inherit; font-size: 13px; }
.tile:hover { border-color: var(--rule-2); }
.tile i { height: 22px; border-radius: 4px; }
.tile small { display: block; color: var(--ink-3); font-size: 10.5px; }

/* ── anteprima ── */
.screen { position: relative; height: 100%; max-height: calc(100vh - 48px - 330px); min-height: 220px; aspect-ratio: 9 / 16; background: #000; border-radius: 8px; overflow: hidden; border: 1px solid var(--rule); }
#out { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
#out:active { cursor: grabbing; }
.boot { position: absolute; inset: 0; display: grid; place-items: center; color: var(--ink-2); background: #000; padding: 20px; text-align: center; }
.boot.error { color: var(--danger); }
.safe i { position: absolute; background: rgba(255, 80, 80, .18); border: 1px dashed rgba(255, 120, 120, .6); pointer-events: none; }
.s-top { left: 0; right: 0; top: 0; height: calc(220 / 1920 * 100%); }
.s-bottom { left: 0; right: 0; bottom: 0; height: calc(420 / 1920 * 100%); }
.s-right { right: 0; width: calc(130 / 1080 * 100%); top: calc(1000 / 1920 * 100%); bottom: calc(420 / 1920 * 100%); }
.transport { display: flex; align-items: center; gap: 4px; }
.transport .play { width: 44px; background: var(--ink); color: #04121f; border-color: var(--ink); }
.tc { font-size: 13px; margin-left: 8px; min-width: 74px; }
label.chk { display: flex; align-items: center; gap: 6px; color: var(--ink-2); }

/* ── proprieta' ── */
.insp h3 { margin: 2px 0 10px; font-size: 15px; display: flex; align-items: center; gap: 8px; overflow-wrap: anywhere; }
.insp h3 i { width: 18px; height: 18px; border-radius: 4px; flex: none; }
.insp section { border-top: 1px solid var(--rule); padding: 10px 0 6px; }
.insp section:first-of-type { border-top: 0; padding-top: 0; }
.insp h4 { margin: 0 0 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-3); }
.f { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; }
.f label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--ink-2); min-width: 0; }
.f label.w { grid-column: 1 / -1; }
.f label.chk { flex-direction: row; align-items: center; color: var(--ink); font-size: 13px; }
input[type=number], input[type=text], select, textarea { width: 100%; background: var(--bg); color: var(--ink); border: 1px solid var(--rule-2); border-radius: 6px; padding: 5px 7px; font: inherit; font-size: 13px; }
textarea { resize: vertical; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.pair { display: flex; gap: 6px; align-items: center; }
.pair > input { min-width: 0; }
.cam { display: grid; grid-template-columns: 1fr auto auto; gap: 6px; align-items: center; font-size: 12px; margin-bottom: 6px; }
.cam b { font-weight: 600; color: var(--ink-2); display: block; }
.cam .mono { font-size: 11.5px; }
.note { font-size: 12px; color: var(--ink-3); margin: 6px 0 0; }

/* ── timeline ── */
.tl-tools { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.tl-tools .sep { width: 1px; height: 20px; background: var(--rule-2); margin: 0 4px; }
.zoom { display: flex; align-items: center; gap: 6px; color: var(--ink-3); width: 200px; }
.tl-body { display: grid; grid-template-columns: var(--head-w) minmax(0, 1fr); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; background: var(--bg); }
.tl-heads { border-right: 1px solid var(--rule); background: var(--panel-2); }
.th { display: flex; align-items: center; gap: 6px; padding: 0 8px; font-size: 12px; color: var(--ink-2); border-bottom: 1px solid var(--rule); }
.th b { color: var(--ink); font-size: 11px; background: var(--rule-2); border-radius: 4px; padding: 1px 5px; }
.th-ruler { height: var(--ruler-h); }
.th-v { height: var(--lane-v); }
.th-a { height: var(--lane-a); border-bottom: 0; }
.mute { margin-left: auto; border: 0; background: none; cursor: pointer; font-size: 14px; padding: 2px; opacity: .85; }
.mute.off { opacity: .4; filter: grayscale(1); }
.tl-scroll { overflow-x: auto; overflow-y: hidden; position: relative; }
.tl-inner { position: relative; height: calc(var(--ruler-h) + var(--lane-v) + var(--lane-a)); min-width: 100%; }
.tl-ruler { position: absolute; left: 0; top: 0; height: var(--ruler-h); cursor: col-resize; display: block; }
.tl-grid { position: absolute; left: 0; top: var(--ruler-h); pointer-events: none; display: block; }
.lane { position: absolute; left: 0; right: 0; }
.lane-v { top: var(--ruler-h); height: var(--lane-v); border-bottom: 1px solid var(--rule); }
.lane-a { top: calc(var(--ruler-h) + var(--lane-v)); height: var(--lane-a); }

.clip { position: absolute; top: 5px; bottom: 5px; border-radius: 6px; overflow: hidden; cursor: grab; user-select: none; border: 1px solid rgba(255,255,255,.12); box-shadow: inset 0 0 0 1px rgba(0,0,0,.2); }
.clip.sel { border: 2px solid #fff; }
.clip.drag { opacity: .55; }
.clip .bg { position: absolute; inset: 0; opacity: .55; }
.clip .shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,10,15,.15), rgba(5,10,15,.65)); }
.clip .hold { position: absolute; top: 0; bottom: 0; right: 0; background: repeating-linear-gradient(135deg, rgba(0,0,0,.35) 0 4px, rgba(0,0,0,.15) 4px 8px); }
.clip .lab { position: absolute; left: 8px; right: 10px; top: 4px; font-size: 12px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-shadow: 0 1px 2px #000; }
.clip .sub { position: absolute; left: 8px; right: 10px; bottom: 4px; font: 10.5px "IBM Plex Mono", monospace; color: #d7e3ea; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-shadow: 0 1px 2px #000; }
.clip .h { position: absolute; top: 0; bottom: 0; width: 9px; cursor: ew-resize; z-index: 2; }
.clip .h::after { content: ''; position: absolute; top: 30%; bottom: 30%; width: 3px; border-radius: 2px; background: rgba(255,255,255,.75); }
.clip .h.l { left: 0; } .clip .h.l::after { left: 2px; }
.clip .h.r { right: 0; } .clip .h.r::after { right: 2px; }
.clip .dip { position: absolute; top: 0; left: 0; width: 0; height: 0; border-top: 10px solid #000; border-right: 10px solid transparent; }

.clip.audio { background: #18324a; cursor: grab; }
.clip.audio canvas { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
.clip.audio .lab { top: 3px; font-weight: 600; }
.clip.audio .fade { position: absolute; top: 0; bottom: 0; pointer-events: none; }
.clip.audio .fh { position: absolute; top: 2px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 2px solid #18324a; cursor: ew-resize; z-index: 3; }
.empty-a { position: absolute; inset: 6px; display: grid; place-items: center; border: 1px dashed var(--rule-2); border-radius: 6px; color: var(--ink-3); font-size: 12px; }
.empty-a.over, .lane-v.over { background: rgba(74, 163, 255, .08); }

.drop { position: absolute; top: var(--ruler-h); height: var(--lane-v); width: 3px; margin-left: -1px; background: var(--accent); z-index: 5; pointer-events: none; }
.snapline { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--gold); z-index: 5; pointer-events: none; }
.playhead { position: absolute; top: 0; bottom: 0; width: 2px; margin-left: -1px; background: #ff5d5d; z-index: 6; pointer-events: none; }
.playhead i { position: absolute; top: 0; left: -6px; width: 0; height: 0; border-left: 7px solid transparent; border-right: 7px solid transparent; border-top: 9px solid #ff5d5d; }
.tl-help { margin: 4px 0 0; }

dialog { background: var(--panel); color: var(--ink); border: 1px solid var(--rule); border-radius: 12px; width: min(540px, 92vw); }
dialog::backdrop { background: rgba(0, 0, 0, .6); }
dialog h3 { margin: 0 0 8px; }
progress { width: 100%; height: 10px; accent-color: var(--accent); }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 10px; }

#atlas { position: fixed; left: 0; top: 0; border: 0; visibility: hidden; pointer-events: none; }

/* schermi stretti: una colonna, si scorre */
@media (max-width: 1100px) {
  body { overflow: auto; }
  .app { height: auto; grid-template-columns: 1fr; grid-template-areas: "viewer" "tl" "insp" "lib"; }
  .screen { height: 60vh; max-height: none; }
  .lib, .insp { border: 0; border-top: 1px solid var(--rule); }
  .zoom { width: 120px; }
  .tl-tools { flex-wrap: wrap; }
}
.clip.audio .lab { left: 20px; right: 20px; }
.wait { position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); background: rgba(0,0,0,.7); color: var(--gold); font-size: 12px; padding: 3px 10px; border-radius: 10px; pointer-events: none; }
/* pezzo del brano allungato o accorciato */
.clip.audio.st { background: repeating-linear-gradient(135deg, #18324a 0 8px, #1d3b57 8px 16px); }

/* ── strumenti della timeline (come Premiere: V C R Y) ── */
.tools { display: inline-flex; }
.tools .tool { border-radius: 0; margin-left: -1px; width: 32px; padding: 4px 0; }
.tools .tool:first-child { border-radius: 7px 0 0 7px; margin-left: 0; }
.tools .tool:last-child { border-radius: 0 7px 7px 0; }
.tools .tool.on { background: var(--accent); border-color: var(--accent); color: #04121f; position: relative; z-index: 1; }
.tl-inner[data-tool=c] .clip { cursor: crosshair; }
.tl-inner[data-tool=y] .clip { cursor: ew-resize; }
.tl-inner[data-tool=r] .clip.audio .h { cursor: col-resize; background: rgba(74, 163, 255, .55); }
.snapline.razor { background: #fff; box-shadow: 0 0 0 1px rgba(0, 0, 0, .5); }

/* ── menu col tasto destro ── */
.ctx { position: fixed; z-index: 100; min-width: 230px; max-width: 340px; padding: 4px; background: #15222d; border: 1px solid var(--rule-2); border-radius: 9px; box-shadow: 0 12px 32px rgba(0, 0, 0, .55); font-size: 13px; }
.ctx button { display: grid; grid-template-columns: 16px 1fr auto; align-items: center; gap: 6px; width: 100%; border: 0; background: none; color: var(--ink); font: inherit; text-align: left; padding: 5px 10px 5px 6px; border-radius: 6px; cursor: pointer; }
.ctx button:hover:not(:disabled), .ctx button:focus-visible { background: var(--accent); color: #04121f; outline: none; }
.ctx button:hover:not(:disabled) .ky, .ctx button:focus-visible .ky { color: #04121f; }
.ctx button:disabled { color: var(--ink-3); cursor: default; }
.ctx button.danger:not(:disabled) { color: var(--danger); }
.ctx button.danger:hover:not(:disabled) { background: var(--danger); color: #1a0505; }
.ctx .ck { color: var(--accent); font-weight: 700; text-align: center; }
.ctx button:hover .ck { color: inherit; }
.ctx .ky { color: var(--ink-3); font-size: 11.5px; font-family: "IBM Plex Mono", monospace; padding-left: 18px; white-space: nowrap; }
.ctx-sep { height: 1px; margin: 4px 6px; background: var(--rule-2); }

/* ── pannello delle scorciatoie ── */
dialog.keys { width: min(860px, 94vw); max-height: 86vh; }
.keys-body { columns: 2 320px; column-gap: 28px; }
.keys-body section { break-inside: avoid; margin-bottom: 12px; }
.keys-body h4 { margin: 4px 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); }
.keys-body dl { display: grid; grid-template-columns: 12.5em 1fr; gap: 5px 12px; margin: 0; font-size: 12.5px; align-items: baseline; }
.keys-body dt { color: var(--ink-3); line-height: 1.9; }
.keys-body dd { margin: 0; }
kbd { display: inline-block; min-width: 18px; padding: 1px 5px; border: 1px solid var(--rule-2); border-bottom-width: 2px; border-radius: 5px; background: var(--panel-2); color: var(--ink); font: 600 11px "IBM Plex Mono", monospace; text-align: center; }