/* Layout: full-bleed canvas with floating pills and cards on top. Colors come only from tokens.css. */
html, body { height: 100%; margin: 0; overflow: hidden; }
body { position: relative; }
*, *::before, *::after { box-sizing: border-box; }
button { font: inherit; color: inherit; }

/* Canvas fills the viewport behind everything; static dot grid */
#canvas-area {
  position: fixed;
  inset: 0 0 var(--footer-h) 0;
  z-index: 0;
  overflow: hidden;
  background-color: var(--canvas-bg);
  background-image: radial-gradient(var(--canvas-dot) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Floating pills and cards (pills sit above cards so their menus are never covered) */
.pill, .card {
  position: fixed;
  z-index: 10;
}
.pill { z-index: 12; }
.pill, .card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-float);
}
.pill { display: flex; align-items: center; gap: 4px; padding: 4px; border-radius: var(--radius-pill); }
.pill { --chevron-right: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b8b94' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 5l7 7-7 7'/%3E%3C/svg%3E"); --chevron-left: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b8b94' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 5l-7 7 7 7'/%3E%3C/svg%3E"); }
.pill-divider { flex: 0 0 auto; width: 1px; height: 20px; margin: 0 4px; background: var(--border-strong); }
.pill-top { top: 12px; left: 12px; right: 12px; padding: 4px 4px 4px 10px; }
/* Everything in the top bar scrolls sideways when the screen is too narrow (chevron fades like the tool pill); the project name takes the free space */
.top-scroll { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.top-scroll::-webkit-scrollbar { display: none; }
.top-history { flex: 0 0 auto; margin-left: auto; display: flex; align-items: center; gap: 4px; }
.top-scroll > :not(.project-name), .top-history > * { flex: 0 0 auto; }
.brand-name { font-size: var(--fs-body); font-weight: 600; white-space: nowrap; }
.project-name { flex: 1 1 140px; min-width: 96px; width: auto; height: 28px; padding: 0 8px; font: inherit; font-size: var(--fs-small); color: var(--text); background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm); text-overflow: ellipsis; }
.project-name:hover { background: var(--surface-2); }
.project-name:focus { outline: none; background: var(--surface); border-color: var(--accent); }
.logo { flex: 0 0 auto; display: block; }
.logo-slot { display: flex; border-radius: 6px; }
.logo-slot:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.logo-bg { fill: var(--accent); }
.logo-line { stroke: var(--logo-glyph); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.logo-fill { fill: var(--logo-glyph); }
.pill-tools { bottom: calc(var(--footer-h) + 8px); left: 0; right: 0; margin-inline: auto; width: max-content; max-width: calc(100vw - 24px); overflow-x: auto; scrollbar-width: none; }
/* Floating toolbar (dragged away from the bottom dock) */
.pill-tools.is-floating { bottom: auto; right: auto; margin-inline: 0; max-width: calc(100vw - 8px); }
.pill-tools.is-dragging { cursor: grabbing; box-shadow: 0 8px 28px rgb(0 0 0 / 0.35); }
.tool-more { width: 24px; padding: 0; justify-content: center; margin-left: -6px; }
.tool-lock { width: 32px; padding: 0; justify-content: center; }
.pill-tools:not(.is-floating) .tool-grip { display: none; }
.tool-grip { flex: 0 0 auto; align-self: stretch; width: 16px; margin-left: 2px; border-radius: var(--radius-sm); cursor: grab; touch-action: none; color: var(--text-faint); background: radial-gradient(circle, currentColor 1.3px, transparent 1.6px) center / 6px 6px repeat-y; background-clip: content-box; padding: 0 5px; }
.tool-grip:hover { color: var(--text-muted); }
.pill-tools::-webkit-scrollbar { display: none; }
/* Edge hints that the tool pill scrolls: a solid fade with a small chevron, only on a side that has hidden tools */
.pill-tools::before, .pill-tools::after, .top-scroll::before, .top-scroll::after { content: ''; position: sticky; flex: 0 0 40px; align-self: stretch; opacity: 0; pointer-events: none; transition: opacity 150ms; background-repeat: no-repeat; background-size: 12px, 100%; }
.pill-tools::before, .top-scroll::before { left: -4px; margin-right: -40px; background-image: var(--chevron-left), linear-gradient(to right, var(--surface) 60%, transparent); background-position: left 8px center, 0 0; }
.pill-tools::after, .top-scroll::after { right: -4px; margin-left: -40px; background-image: var(--chevron-right), linear-gradient(to left, var(--surface) 60%, transparent); background-position: right 8px center, 0 0; }
.pill-tools.fade-start::before, .pill-tools.fade-end::after, .top-scroll.fade-start::before, .top-scroll.fade-end::after { opacity: 1; }
.pill-colors { bottom: calc(var(--footer-h) + 64px); left: 0; right: 0; margin-inline: auto; width: max-content; gap: 8px; padding: 8px 12px; animation: pop-in 150ms ease-out; }
.pill-colors[hidden] { display: none; }
@keyframes pop-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Buttons: flat ghost, hover = surface-2, no borders */
.menu-btn, .tool-btn, .icon-btn, .menu button, #code-actions button, .seg button, .empty-card button, #message-bar button, #import-dialog button, #feedback-dialog button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  font-size: var(--fs-small);
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background-color 120ms, color 120ms, border-color 120ms, box-shadow 120ms;
}
.icon-btn { width: 32px; padding: 0; justify-content: center; }
.menu-btn { font-weight: 500; }
.menu-btn[aria-expanded="true"], .icon-btn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }
.menu-btn:hover, .tool-btn:hover, .icon-btn:hover:not(:disabled), .menu button:hover, #code-actions button:hover, .seg button:hover, .empty-card .ghost:hover, #message-bar button:hover,
#import-dialog button:hover:not(.primary, #import-replace), #feedback-dialog button:hover:not(.primary) { background: var(--surface-2); }
.icon-btn[aria-pressed="true"]:hover { background: var(--accent-soft); }
.icon-btn:disabled { opacity: 0.35; cursor: default; pointer-events: none; }
.icon { flex: 0 0 auto; }
.tool-btn { flex: 0 0 auto; }
.tool-btn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }
.tool-btn[data-tool="step"] .icon { color: var(--tool-step); }
.tool-btn[data-tool="decision"] .icon { color: var(--tool-decision); }
.tool-btn[data-tool="start"] .icon { color: var(--tool-start); }
.tool-btn[data-tool="end"] .icon { color: var(--tool-end); }
.empty-card .primary, #import-dialog button.primary, #feedback-dialog button.primary { background: var(--accent); color: var(--on-accent); font-weight: 500; }
.empty-card .primary:hover, #import-dialog button.primary:hover, #feedback-dialog button.primary:hover { background: var(--accent-hover); }
#import-dialog #import-replace { border-color: var(--accent); color: var(--accent); }
#import-dialog #import-replace:hover { background: var(--accent-soft); }

/* Focus ring: accent outline + soft halo on every interactive element */
button:focus-visible, textarea:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* Dropdown menus */
.menu-wrap { position: relative; }
.menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 20;
  min-width: 220px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-float);
}
.menu[hidden] { display: none; }
/* Popover: a menu placed by JS above a tool-pill button (fixed, so the scrolling pill cannot clip it) */
.menu.popover { position: fixed; top: 0; left: 0; min-width: 240px; }
.popover-hint { margin: 2px 0 0; padding: 6px 10px 4px; border-top: 1px solid var(--border); }
.menu button { width: 100%; justify-content: flex-start; }
.menu button kbd { margin-left: auto; font: inherit; font-size: var(--fs-small); color: var(--text-faint); }
.menu button.has-desc { height: auto; min-height: 32px; padding: 6px 10px; align-items: flex-start; white-space: normal; text-align: left; }
.menu button.has-desc .icon { margin-top: 2px; flex: 0 0 auto; }
.menu-text { display: flex; flex-direction: column; gap: 1px; }
.menu-desc { font-size: var(--fs-small); line-height: 1.35; color: var(--text-muted); }
#menu-export { width: 300px; max-width: calc(100vw - 24px); }
.menu button .icon { color: var(--text-muted); }

/* Right-click menu (same look as the dropdowns, placed at the cursor) */
.context-menu { position: fixed; top: 0; left: 0; z-index: 30; min-width: 200px; }
.menu-label { padding: 6px 10px 2px; font-size: var(--fs-micro); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-faint); }
.menu-sep { height: 1px; margin: 3px 4px; background: var(--border); }
.menu button.danger, .menu button.danger .icon { color: var(--danger); }
.tool-btn[aria-disabled="true"] { opacity: 0.4; cursor: default; }
.tool-btn[aria-disabled="true"]:hover { background: transparent; }
.tool-btn[data-tool="trash"]:not([aria-disabled="true"]):hover { color: var(--danger); }