/* ============ FlipSketch Studio ============ */
* { box-sizing: border-box; }

:root {
  --bg: #171717;
  --panel: #202020;
  --panel2: #252525;
  --border: #333;
  --border2: #444;
  --text: #f2f2f2;
  --muted: #9a9a9a;
  --accent: #8b0000;
  --accent-soft: #b23a3a;
  --btn: #333;
  --btn-hover: #414141;
  --input-bg: #111;
  --check-a: #202020;
  --shadow: rgba(0,0,0,.7);
}
body.light {
  --bg: #ececec;
  --panel: #f5f5f5;
  --panel2: #ffffff;
  --border: #ccc;
  --border2: #bbb;
  --text: #141414;
  --muted: #666;
  --btn: #ddd;
  --btn-hover: #cbcbcb;
  --input-bg: #fff;
  --check-a: #d5d5d5;
  --shadow: rgba(0,0,0,.25);
}

[hidden] { display: none !important; }

html, body {
  margin: 0; width: 100%; height: 100%; overflow: hidden;
  font-family: "Segoe UI", Arial, sans-serif; font-size: 14px;
  background: var(--bg); color: var(--text);
}
button { font-family: inherit; }

/* ============ Header ============ */
header {
  height: 52px; display: flex; align-items: center; gap: 6px;
  padding: 6px 10px; background: var(--panel); border-bottom: 2px solid var(--border);
  overflow-x: auto; overflow-y: hidden; scrollbar-width: thin;
}
.logo { font-size: 17px; font-weight: 700; white-space: nowrap; }
.logo em { font-style: normal; color: var(--accent-soft); }
.projectName {
  max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--muted); font-size: 13px; background: transparent; border: 1px dashed transparent;
}
.projectName:hover { border-color: var(--border2); color: var(--text); }
.grow { flex: 1; }
.sep { width: 1px; align-self: stretch; margin: 4px 2px; background: var(--border); flex-shrink: 0; }

button {
  border: none; border-radius: 7px; padding: 8px 11px;
  background: var(--btn); color: var(--text); cursor: pointer;
  white-space: nowrap; flex-shrink: 0; font-size: 13px;
}
button:hover { background: var(--btn-hover); }
button:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 1px; }
button.active { background: var(--accent); color: #fff; }
button:disabled { opacity: .35; cursor: default; }
button.primary { background: var(--accent); color: #fff; }
button.primary:hover { background: #a31212; }
button.danger { background: #700; color: #fff; }
button.danger:hover { background: #900; }

/* dark-red styled FPS + brush size controls */
.fpsBox, .sizeBox {
  display: flex; align-items: center; gap: 5px; flex-shrink: 0;
  color: #fff; font-size: 12px; font-weight: 700;
  background: var(--accent); border-radius: 7px; padding: 4px 9px;
}
.fpsBox input[type=range], .sizeBox input[type=range] { width: 74px; accent-color: #fff; }
.fpsBox span, .sizeBox span { min-width: 20px; text-align: right; }

.saveStatus { color: var(--muted); font-size: 12px; white-space: nowrap; padding: 0 4px; }
.saveStatus.dirty { color: var(--accent-soft); }
.narrowOnly { display: none; }

/* ============ Main layout ============ */
main { height: calc(100vh - 52px - 148px); display: flex; }

/* ============ Left toolbar ============ */
.toolbar {
  width: 212px; flex-shrink: 0; background: var(--panel);
  border-right: 2px solid var(--border); padding: 10px; overflow-y: auto;
}
.search {
  width: 100%; padding: 9px 10px; border-radius: 7px; border: 1px solid var(--border2);
  background: var(--input-bg); color: var(--text); outline: none; margin-bottom: 8px; font-size: 13px;
}
.search:focus { border-color: var(--accent-soft); }
.noTools { display: none; color: var(--muted); text-align: center; padding: 10px; }
.sectionTitle {
  color: var(--muted); font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase;
  margin: 13px 0 7px; font-weight: 700;
}
.tool { width: 100%; margin-bottom: 6px; text-align: left; }
.subSettings {
  display: none; margin: 2px 0 10px; padding: 9px; border-radius: 8px;
  background: var(--panel2); border: 1px solid var(--border);
}
.subSettings.show { display: block; }
.smallLabel { display: block; color: var(--muted); font-size: 12px; margin: 7px 0 3px; }
.smallLabel:first-child { margin-top: 0; }
.subSettings input[type=range], .sidePanel input[type=range] { width: 100%; accent-color: var(--accent-soft); }
input[type=color] {
  width: 100%; height: 34px; padding: 2px; border: 1px solid var(--border2);
  border-radius: 6px; background: var(--input-bg); cursor: pointer;
}
select, input[type=number], input[type=text], input:not([type]) {
  width: 100%; padding: 7px 8px; border-radius: 6px; border: 1px solid var(--border2);
  background: var(--input-bg); color: var(--text); font-size: 13px;
}
.chk { display: flex; gap: 7px; align-items: center; color: var(--text); font-size: 13px; margin: 7px 0; cursor: pointer; }
.chk input { accent-color: var(--accent); }
.btnRow { display: flex; gap: 6px; align-items: center; margin: 6px 0; }
.btnRow button { flex: 1; padding: 7px 6px; }
.btnRow input[type=number] { width: 70px; }

/* ============ Canvas area ============ */
.canvasArea {
  flex: 1; position: relative; overflow: hidden; min-width: 0;
  background:
    linear-gradient(45deg, var(--check-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--check-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--check-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--check-a) 75%);
  background-size: 30px 30px;
  background-position: 0 0, 0 15px, 15px -15px, -15px 0;
}
#viewCanvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; outline: none; }
#viewCanvas.toolCursor { cursor: crosshair; }
#viewCanvas.panCursor { cursor: grab; }
#viewCanvas.panningCursor { cursor: grabbing; }
#viewCanvas.pickCursor { cursor: copy; }

.selectionHint {
  position: absolute; display: none; bottom: 10px; left: 50%; transform: translateX(-50%);
  max-width: 92%; background: rgba(0,0,0,.78); color: #fff; padding: 7px 12px;
  border-radius: 7px; font-size: 12px; pointer-events: none; z-index: 20; text-align: center;
}
.selectionHint.show { display: block; }

#textInput {
  position: fixed; display: none; z-index: 500; width: 240px;
  padding: 8px; border: 2px solid var(--accent); border-radius: 6px; outline: none;
  background: var(--panel2); color: var(--text); font-size: 15px;
}

/* ============ Right side panel ============ */
.sidePanel {
  width: 262px; flex-shrink: 0; background: var(--panel);
  border-left: 2px solid var(--border); overflow-y: auto; padding: 10px;
}
.sidePanel details { margin-bottom: 10px; border: 1px solid var(--border); border-radius: 9px; background: var(--panel2); }
.sidePanel summary {
  cursor: pointer; padding: 9px 11px; font-weight: 700; font-size: 13px;
  list-style: none; user-select: none;
}
.sidePanel summary::-webkit-details-marker { display: none; }
.sidePanel details[open] summary { border-bottom: 1px solid var(--border); }
.sidePanel details > *:not(summary) { margin: 8px 10px; }
.hintText { color: var(--muted); font-size: 11.5px; line-height: 1.45; }

.layerList { display: flex; flex-direction: column; gap: 5px; }
.layerItem {
  display: flex; align-items: center; gap: 7px; padding: 7px 8px;
  border-radius: 7px; background: var(--btn); cursor: pointer; border: 2px solid transparent;
}
.layerItem.active { border-color: var(--accent); }
.layerItem .eye { cursor: pointer; background: transparent; padding: 0 2px; font-size: 15px; }
.layerItem .lname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.layerItem .lname input { width: 100%; font-size: 13px; padding: 2px 4px; }
.layerItem.hiddenLayer .lname { opacity: .4; text-decoration: line-through; }

.aiHistory { display: flex; flex-wrap: wrap; gap: 5px; }
.aiChip {
  background: var(--btn); border-radius: 20px; padding: 4px 11px; font-size: 12px; cursor: pointer;
}
.aiChip:hover { background: var(--btn-hover); }

#refVideo, #cameraVideo { width: 100%; border-radius: 8px; background: #000; }

/* ============ Timeline ============ */
.timeline {
  height: 148px; background: var(--panel); border-top: 2px solid var(--border2);
  display: flex; flex-direction: column;
}
.timelineControls {
  height: 44px; display: flex; align-items: center; gap: 7px; padding: 5px 10px;
  overflow-x: auto; scrollbar-width: thin;
}
.frameInd { font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.frameInd span { color: var(--text); font-weight: 700; }
.frames {
  flex: 1; display: flex; gap: 8px; padding: 8px 10px; overflow-x: auto; align-items: center;
}
.frame {
  position: relative; width: 96px; height: 64px; flex-shrink: 0;
  border: 3px solid var(--border2); border-radius: 6px; cursor: pointer;
  background: #fff; overflow: hidden;
}
.frame canvas { width: 100%; height: 100%; display: block; }
.frame .fnum {
  position: absolute; left: 3px; top: 2px; font-size: 10px; font-weight: 700;
  background: rgba(0,0,0,.55); color: #fff; border-radius: 4px; padding: 1px 5px; pointer-events: none;
}
.frame.active { border-color: var(--accent); }
.frameAdd {
  width: 44px; height: 64px; flex-shrink: 0; border-radius: 6px;
  border: 2px dashed var(--border2); background: transparent; color: var(--muted); font-size: 21px;
}
.frameAdd:hover { border-color: var(--accent-soft); color: var(--text); background: transparent; }
.audioTrack {
  display: flex; align-items: center; gap: 6px; padding: 0 12px 5px; font-size: 11px;
}
.audioTrack .audioBar {
  flex: 1; height: 8px; border-radius: 4px;
  background: repeating-linear-gradient(90deg, var(--accent-soft), var(--accent-soft) 7px, var(--accent) 7px, var(--accent) 14px);
}

/* ============ Modals ============ */
.modal {
  position: fixed; inset: 0; z-index: 1000; display: none;
  align-items: center; justify-content: center; background: rgba(0,0,0,.72);
}
.modal.show { display: flex; }
.modalBox {
  width: min(430px, 92vw); max-height: 86vh; overflow-y: auto;
  background: var(--panel2); color: var(--text); padding: 22px;
  border-radius: 12px; box-shadow: 0 15px 50px var(--shadow); border: 1px solid var(--border);
}
.modalBox h2 { margin: 0 0 13px; font-size: 17px; }
.modalBox input, .modalBox select { margin-bottom: 10px; }
.modalButtons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.projectList { display: flex; flex-direction: column; gap: 7px; max-height: 46vh; overflow-y: auto; }
.projectItem {
  display: flex; gap: 7px; align-items: center; padding: 9px;
  border-radius: 8px; background: var(--btn);
}
.projectItem .pname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.projectItem .pmeta { color: var(--muted); font-size: 11px; white-space: nowrap; }
.projectItem button { padding: 5px 9px; font-size: 12px; }

/* ============ Menus ============ */
.menuWrap { position: relative; flex-shrink: 0; }
.menu {
  position: fixed; z-index: 900; display: none;
  min-width: 225px; background: var(--panel2); border: 1px solid var(--border2);
  border-radius: 9px; padding: 6px; box-shadow: 0 10px 34px var(--shadow);
}
.menu.show { display: block; }
.menu button { display: block; width: 100%; text-align: left; background: transparent; margin: 1px 0; }
.menu button:hover { background: var(--btn); }
.menu hr { border: none; border-top: 1px solid var(--border); margin: 5px 2px; }

/* ============ Toasts ============ */
.toasts {
  position: fixed; bottom: 160px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 7px; z-index: 2000; align-items: center; pointer-events: none;
}
.toast {
  background: rgba(20,20,20,.93); color: #fff; border: 1px solid #444;
  border-radius: 9px; padding: 9px 16px; font-size: 13px; max-width: 84vw;
  box-shadow: 0 6px 22px rgba(0,0,0,.5); animation: toastIn .18s ease-out;
}
.toast.error { border-color: var(--accent-soft); background: rgba(70,10,10,.95); }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; } }

/* ============ Narrow screens ============ */
@media (max-width: 980px) {
  .narrowOnly { display: inline-block; }
  .toolbar, .sidePanel {
    position: fixed; top: 52px; bottom: 148px; z-index: 600; display: none;
    box-shadow: 0 0 40px var(--shadow);
  }
  .toolbar { left: 0; }
  .sidePanel { right: 0; }
  .toolbar.open, .sidePanel.open { display: block; }
  .frame { width: 72px; height: 48px; }
  .frameAdd { height: 48px; }
}