/* Kairos Canvas: workspace layout and responsive behavior. Generated from the validated visual baseline. */

/* Opening experience */
.intro-screen {
  position: fixed;
  inset: 0;
  z-index: 5000;
  overflow: hidden;
  background: #fafafa;
  color: #111216;
  isolation: isolate;
  transition: opacity .62s cubic-bezier(.22,.75,.22,1), transform .8s cubic-bezier(.22,.75,.22,1), visibility 0s linear .8s;
}

.intro-art {
  position: absolute;
  inset: -3%;
  width: 106%;
  height: 106%;
  object-fit: cover;
  object-position: center;
  z-index: -2;
  will-change: transform;
  transform: translate3d(var(--intro-x, 0), var(--intro-y, 0), 0) scale(1.035);
  transition: transform .35s cubic-bezier(.2,.7,.3,1);
}

.intro-grain {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.intro-nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 74px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 30px;
  z-index: 3;
}

.intro-logo {
  width: 124px;
  height: 44px;
  justify-content: flex-start;
}

.intro-nav-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(17,18,22,.56);
  font-family: var(--font-mono);
  font-size: 9px;
}

.intro-nav-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(130,217,31,.12);
}

.intro-guide { justify-self: end; }

.intro-hero {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(680px, calc(100% - 48px));
  transform: translate(-50%, -48%);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 2;
}

.intro-kicker {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: rgba(17,18,22,.56);
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
}

.intro-kicker span {
  width: 22px;
  height: 2px;
  background: var(--warm);
}

.intro-hero h1 {
  margin: 0;
  color: #111216;
  font-family: var(--font-sans);
  font-size: 88px;
  font-weight: 800;
  line-height: .88;
  letter-spacing: 0;
  text-shadow: 0 1px 0 #fff, 0 10px 32px rgba(255,255,255,.9);
}

.intro-hero p {
  margin: 24px 0 27px;
  color: #33363c;
  font-size: 16px;
  font-weight: 450;
}

.intro-coordinate {
  position: absolute;
  bottom: 22px;
  color: rgba(17,18,22,.42);
  font-family: var(--font-mono);
  font-size: 8px;
  z-index: 2;
}

.intro-coordinate-left { left: 28px; }
.intro-coordinate-right { right: 28px; }

.canvas-app {
  position: fixed;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.012);
  transform-origin: center;
  transition: opacity .55s ease .18s, transform .72s cubic-bezier(.22,.75,.22,1) .12s, visibility 0s linear .82s;
}

body.workspace-entered .intro-screen {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.025);
  pointer-events: none;
}

body.workspace-entered .canvas-app {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  transition-delay: .18s, .12s, 0s;
}

.canvas-empty { display: none !important; }

@media (max-width: 820px) {
  .intro-nav {
    height: 64px;
    grid-template-columns: 1fr auto;
    padding: 0 18px;
  }
  .intro-nav-meta { display: none; }
  .intro-logo { width: 106px; }
  .intro-hero h1 { font-size: 62px; }
  .intro-hero p { margin-top: 20px; font-size: 14px; }
  .intro-coordinate { display: none; }
}

@media (max-width: 520px) {
  .intro-guide { display: none; }
  .intro-nav { grid-template-columns: 1fr; }
  .intro-hero { width: calc(100% - 30px); }
  .intro-hero h1 { font-size: 48px; line-height: .94; }
  .intro-hero p { font-size: 13px; }
}

/* ============ 顶栏 ============ */
  .topbar {
    height: 48px;
    background: var(--bg-1);
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 16px;
    position: relative;
    z-index: 10;
  }

.brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
  }

.brand-mark {
    font-family: var(--font-display);
    font-weight: 500;
    font-style: italic;
    font-size: 18px;
    letter-spacing: -0.01em;
    color: var(--text-0);
  }

.brand-sub {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.15em;
  }

.topbar-divider {
    width: 1px;
    height: 20px;
    background: var(--line);
  }

.topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
  }

/* ============ 主区 ============ */
  .main {
    display: grid;
    grid-template-columns: 320px 1fr 280px;
    height: calc(100vh - 48px);
  }

/* ============ 左栏：生成面板 ============ */
  .left-panel {
    background: var(--bg-1);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

.panel-header {
    padding: 14px 16px 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

.scroll-area {
    flex: 1;
    overflow-y: auto;
    padding: 0 16px 16px;
  }

/* ============ 中间画布 ============ */
  .canvas-area {
    background:
      radial-gradient(circle at 20% 30%, rgba(212,255,58,0.025), transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(255,122,79,0.02), transparent 50%),
      var(--bg-0);
    background-image:
      radial-gradient(circle at 20% 30%, rgba(212,255,58,0.025), transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(255,122,79,0.02), transparent 50%),
      linear-gradient(var(--line-soft) 1px, transparent 1px),
      linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 32px 32px, 32px 32px;
    background-position: 0 0, 0 0, 0 0, 0 0;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }

.canvas-toolbar {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 4px;
    display: flex;
    align-items: center;
    gap: 2px;
    box-shadow: var(--shadow-sm);
    z-index: 5;
  }

.canvas-status {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    gap: 8px;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    background: var(--bg-2);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--line);
    z-index: 5;
  }

.canvas-zoom {
    position: absolute;
    bottom: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-2);
    padding: 4px;
    border-radius: 6px;
    border: 1px solid var(--line);
    z-index: 5;
  }

.canvas-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: default;
  }

.canvas-viewport.tool-pan { cursor: grab; }

.canvas-viewport.tool-pan.grabbing { cursor: grabbing; }

.canvas-viewport.tool-move { cursor: default; }

.canvas-viewport.tool-wand { cursor: crosshair; }

.canvas-stage {
    position: absolute;
    transform-origin: 0 0;
    will-change: transform;
  }

.canvas-doc {
    background: white;
    box-shadow: 0 30px 80px -20px rgba(0,0,0,0.8), 0 0 0 1px rgba(255,255,255,0.05);
    position: relative;
    overflow: visible;
    background-image:
      linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
      linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
      linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
      linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: white;
  }

.canvas-ruler {
    position: absolute;
    background: rgba(10,10,11,0.84);
    color: var(--text-3);
    font-family: var(--font-mono);
    font-size: 9px;
    pointer-events: none;
    z-index: 3;
  }

.canvas-ruler.top {
    left: 0; top: -20px; right: 0; height: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }

.canvas-ruler.left {
    left: -20px; top: 0; bottom: 0; width: 20px;
    border-right: 1px solid rgba(255,255,255,0.04);
  }

.canvas-ruler.top .ruler-line { width: 1px; bottom: 0; }

.canvas-ruler.left .ruler-line { height: 1px; right: 0; }

.canvas-guide {
    position: absolute;
    pointer-events: none;
    z-index: 2;
  }

.canvas-guide.h {
    left: 0; right: 0; height: 1px; background: rgba(212,255,58,0.22);
  }

.canvas-guide.v {
    top: 0; bottom: 0; width: 1px; background: rgba(212,255,58,0.22);
  }

/* ============ 右栏：图层 ============ */
  .right-panel {
    background: var(--bg-1);
    border-left: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

.right-tabs {
    display: flex;
    border-bottom: 1px solid var(--line);
  }

.layer-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
  }

/* ============ 历史 ============ */
  .history-grid {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    align-content: start;
  }

.runtime-log {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

.runtime-log-empty {
    margin: auto 0;
    text-align: center;
    color: var(--text-2);
    font-size: 12px;
  }

.runtime-log-item {
    border: 1px solid var(--line);
    background: var(--bg-2);
    border-radius: 8px;
    padding: 8px 10px;
  }

.runtime-log-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

.runtime-log-msg {
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text-1);
    font-size: 12px;
    line-height: 1.6;
  }

/* ============ 模态框 ============ */
  .modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
  }

.modal-backdrop.open { opacity: 1; pointer-events: auto; }

.modal {
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 24px;
    width: 480px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
    transform: translateY(8px);
    transition: transform 0.2s;
  }

.modal-backdrop.open .modal { transform: translateY(0); }

.modal-title {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 22px;
    margin-bottom: 4px;
    color: var(--text-0);
  }

.modal-subtitle {
    font-size: 12px;
    color: var(--text-2);
    margin-bottom: 18px;
  }

.modal-row {
    margin-bottom: 14px;
  }

.modal-row label {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-3);
    margin-bottom: 6px;
  }

.modal-row .input { background: var(--bg-2); }

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
  }

.modal-btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 12px;
    transition: all 0.1s;
  }

.modal-btn.primary { background: var(--accent); color: var(--bg-0); }

.modal-btn.primary:hover { background: #e1ff5c; }

.modal-btn.ghost { background: var(--bg-3); color: var(--text-1); }

.modal-btn.ghost:hover { background: var(--bg-4); }

/* ============ 通知 ============ */
  .toast-stack {
    position: fixed;
    top: 60px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
  }

/* ============ 进度条 ============ */
  .progress-overlay {
    position: absolute;
    top: 62px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px 16px;
    z-index: 50;
    display: none;
    min-width: 280px;
    box-shadow: var(--shadow-lg);
    pointer-events: none;
  }

.progress-overlay.show { display: block; }

/* 紧凑滚动条 */
  .scroll-area::-webkit-scrollbar { width: 6px; }

.scroll-area::-webkit-scrollbar-thumb { background: var(--bg-3); }

.scroll-area::-webkit-scrollbar-thumb:hover { background: var(--bg-4); }

.topbar {
    position: relative;
    height: 58px;
    padding: 0 14px 0 18px;
    gap: 10px;
    background: rgba(255, 255, 255, 0.96);
    border-bottom-color: #e5e7ea;
    box-shadow: 0 1px 0 rgba(31, 35, 40, 0.025);
  }

.brand {
    align-items: center;
    gap: 10px;
    min-width: 220px;
  }

.brand-logo {
    width: 104px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    flex: 0 0 auto;
    background: transparent;
  }

.brand-emblem {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 7px;
    background: #17191d;
    color: var(--accent);
    font-size: 16px;
    font-weight: 700;
    transform: skewX(-7deg);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
  }

.brand-copy { display: flex; flex-direction: column; gap: 1px; }

.brand-copy { display: none; }

.brand-mark {
    font-family: var(--font-sans);
    font-style: normal;
    font-weight: 700;
    font-size: 14px;
    line-height: 1.05;
    letter-spacing: 0;
  }

.brand-sub {
    font-family: var(--font-sans);
    font-size: 9px;
    font-weight: 500;
    color: var(--text-3);
    letter-spacing: 0;
    text-transform: none;
  }

.topbar-divider { height: 24px; background: #e5e7ea; }

.workspace-name {
    display: flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
    color: var(--text-2);
    font-size: 11px;
  }

.workspace-name strong {
    max-width: 180px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: var(--text-0);
    font-weight: 500;
  }

.workspace-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--lime); }

.topbar-actions { gap: 6px; }

.topbar-actions > .icon-btn {
    border: 1px solid #e1e4e8;
    background: #fff;
  }

.main {
    grid-template-columns: 256px minmax(360px, 1fr) 280px;
    height: calc(100vh - 58px);
    transition: grid-template-columns .32s cubic-bezier(.2,.75,.25,1);
  }

body.left-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 280px; }

body.right-collapsed .main { grid-template-columns: 256px minmax(360px, 1fr) 0; }

body.left-collapsed.right-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 0; }

.left-panel, .right-panel {
    background: #fff;
    transition: opacity .22s ease, transform .3s cubic-bezier(.2,.75,.25,1);
  }

.left-panel { border-right-color: #e4e6e9; }

.right-panel { border-left-color: #e4e6e9; }

body.left-collapsed .left-panel { opacity: 0; transform: translateX(-16px); pointer-events: none; }

body.right-collapsed .right-panel { opacity: 0; transform: translateX(16px); pointer-events: none; }

.panel-header {
    min-height: 54px;
    padding: 15px 16px 9px;
  }

.scroll-area { padding: 0 14px 20px; }

.canvas-area {
    background-color: #eef0f2;
    background-image:
      linear-gradient(rgba(70, 76, 86, .055) 1px, transparent 1px),
      linear-gradient(90deg, rgba(70, 76, 86, .055) 1px, transparent 1px);
    background-size: 24px 24px;
    background-position: -1px -1px;
  }

.canvas-area::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 50% 45%, rgba(255,255,255,.62), transparent 62%);
  }

.canvas-toolbar {
    top: 14px;
    max-width: calc(100% - 28px);
    overflow-x: auto;
    scrollbar-width: none;
    padding: 5px;
    gap: 2px;
    border-color: rgba(31,35,40,.08);
    border-radius: 12px;
    background: rgba(255,255,255,.96);
    box-shadow: 0 10px 32px rgba(34,38,45,.13), 0 2px 7px rgba(34,38,45,.08);
    animation: toolbarEnter .48s cubic-bezier(.2,.8,.25,1) both;
  }

.canvas-toolbar::-webkit-scrollbar { display: none; }

.canvas-viewport { z-index: 1; }

.canvas-stage { transition: transform .12s cubic-bezier(.2,.7,.3,1); }

.canvas-doc {
    background: #fff;
    border: 1px solid rgba(31,35,40,.08);
    box-shadow: 0 18px 55px rgba(36,40,47,.16), 0 2px 8px rgba(36,40,47,.08);
  }

.canvas-ruler { background: rgba(244,245,246,.96); color: #8d939c; border-color: #dde0e4; }

.canvas-guide { background: rgba(116,104,238,.55); }

.canvas-status, .canvas-zoom {
    bottom: 14px;
    border-color: rgba(31,35,40,.08);
    border-radius: 8px;
    background: rgba(255,255,255,.94);
    box-shadow: 0 5px 18px rgba(34,38,45,.09);
    color: var(--text-2);
  }

.canvas-status { left: 14px; font-family: var(--font-sans); }

.canvas-zoom { right: 14px; }

.right-tabs {
    padding: 10px 10px 0;
    gap: 3px;
    border-bottom-color: #e6e8eb;
  }

.layer-list { padding: 9px; }

.text-panel, .wand-panel {
    bottom: 66px;
    max-width: calc(100% - 32px);
    overflow-x: auto;
    border-color: rgba(31,35,40,.08);
    border-radius: 10px;
    background: rgba(255,255,255,.97);
    box-shadow: var(--shadow-sm);
    color: var(--text-0);
    animation: contextualEnter .25s cubic-bezier(.2,.8,.25,1) both;
  }

.text-panel .group + .group, .wand-panel .group + .group { border-left-color: #e2e4e7; }

.text-panel select, .text-panel input[type='number'], .wand-panel button { background: #f3f4f5; border-color: #e3e5e8; color: var(--text-1); }

.text-panel button.active, .wand-panel .seg button.active { background: #efedff; color: var(--accent-dim); }

.wand-panel button.primary { background: var(--accent); color: #fff; }

.modal-backdrop { background: rgba(30,33,39,.36); backdrop-filter: blur(8px); }

.modal {
    background: #fff;
    border-color: rgba(31,35,40,.09);
    border-radius: 12px;
    color: var(--text-0);
    box-shadow: var(--shadow-lg);
  }

.modal-btn.primary { background: linear-gradient(100deg, #6558e9, #ff755f); color: #fff; }

.modal-btn.primary:hover { color: #fff; filter: saturate(1.08); }

.modal-btn.ghost { background: #f1f2f3; color: var(--text-1); }

.modal-btn.ghost:hover { background: #e8eaed; }

.progress-overlay {
    top: 70px;
    background: rgba(255,255,255,.97);
    border-color: rgba(31,35,40,.08);
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
  }

@media (max-width: 1180px) {
    .main { grid-template-columns: 244px minmax(340px, 1fr) 260px; }
    body.left-collapsed .main { grid-template-columns: 0 minmax(340px, 1fr) 260px; }
    body.right-collapsed .main { grid-template-columns: 244px minmax(340px, 1fr) 0; }
    .brand { min-width: 180px; }
    .workspace-name span:not(.workspace-dot) { display: none; }
  }

@media (max-width: 860px) {
    .main, body.left-collapsed .main, body.right-collapsed .main, body.left-collapsed.right-collapsed .main {
      grid-template-columns: 0 minmax(0, 1fr) 0;
    }
    .left-panel, .right-panel { opacity: 0; pointer-events: none; }
    .brand { min-width: 0; }
    .brand-sub, .workspace-name, .topbar-divider, .key-status { display: none; }
    .topbar { padding-inline: 10px; }
    .canvas-size-select { min-width: 108px; max-width: 120px; }
    .canvas-toolbar { left: 12px; right: 12px; transform: none; }
    @keyframes toolbarEnter {
      from { opacity: 0; transform: translateY(-8px) scale(.98); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }
    .canvas-empty { width: min(340px, calc(100% - 28px)); }
  }

/* Screenshot-aligned workspace chrome */
.canvas-side-tools {
  position: absolute;
  z-index: 12;
  top: 70px;
  left: 10px;
  width: 52px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 7px 5px;
  border: 1px solid rgba(31, 35, 40, .08);
  border-radius: 8px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 7px 24px rgba(34, 38, 45, .1);
  backdrop-filter: blur(12px);
  animation: sideToolsEnter .42s cubic-bezier(.2,.8,.25,1) both;
}

/* The main tool rail remains available; selected-element settings appear beside the object. */
.canvas-toolbar { display: flex !important; }

.topbar-history {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px;
  border-left: 1px solid #e7e9ec;
  border-right: 1px solid #e7e9ec;
}

@keyframes sideToolsEnter {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.canvas-toolbar {
  top: 14px;
  width: auto;
  max-width: calc(100% - 150px);
  overflow: visible;
  border-radius: 8px;
  padding: 5px 7px;
}

/* Embedded creator platforms need a practical working width. */
body.platform-open .main { grid-template-columns: 430px minmax(360px, 1fr) 280px; }
body.platform-open.right-collapsed .main { grid-template-columns: 430px minmax(360px, 1fr) 0; }
body.platform-open.left-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 280px; }
body.platform-open.left-collapsed.right-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 0; }
body.platform-open .platform-panel { min-width: 0; }

/* User-resizable left rail. */
:root { --left-panel-width: 340px; }
.main { grid-template-columns: var(--left-panel-width) minmax(360px, 1fr) 280px !important; }
body.right-collapsed .main { grid-template-columns: var(--left-panel-width) minmax(360px, 1fr) 0 !important; }
body.left-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 280px !important; }
body.left-collapsed.right-collapsed .main { grid-template-columns: 0 minmax(360px, 1fr) 0 !important; }
.left-panel { position: relative; }
.left-panel-resizer { position: absolute; z-index: 30; top: 0; right: -5px; width: 10px; height: 100%; cursor: col-resize; touch-action: none; }
.left-panel-resizer::after { content: ''; position: absolute; top: 50%; left: 4px; width: 2px; height: 42px; border-radius: 3px; background: transparent; transform: translateY(-50%); transition: background .15s ease; }
.left-panel-resizer:hover::after, body.resizing-left-panel .left-panel-resizer::after { background: #7367ee; }
body.resizing-left-panel { cursor: col-resize; user-select: none; }

.toolbar-more { position: relative; display: flex; }

.toolbar-more-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: -7px;
  display: none;
  grid-template-columns: repeat(4, 32px);
  gap: 4px;
  padding: 7px;
  border: 1px solid rgba(31, 35, 40, .09);
  border-radius: 8px;
  background: rgba(255,255,255,.98);
  box-shadow: 0 12px 30px rgba(34,38,45,.16);
}

.toolbar-more-menu.open { display: grid; animation: moreMenuIn .16s ease both; }
.toolbar-more-menu .tool-divider { display: none; }

@keyframes moreMenuIn {
  from { opacity: 0; transform: translateY(-4px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.properties-shell { flex: 1; overflow: auto; }

@media (max-width: 860px) {
  .canvas-side-tools { left: 8px; top: 66px; }
  .canvas-toolbar { left: 72px; right: 8px; max-width: none; }
}