/* ================================================================
   canvas.css — Canvas surface and draggable element blocks.
   ================================================================ */

/* ===================== CANVAS ===================== */
.canvas {
  width: 1100px;
  min-height: 600px;
  max-width: 100%;
  background: var(--canvasBg);
  border: 1px solid var(--stroke);
  border-radius: var(--r-xl);
  padding: var(--s-6);
  position: relative;
  box-shadow: var(--shadow-xl);
  transform-origin: top center;
  transition: width var(--dur-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}

.canvas.grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
  background-size: 8px 8px;
  background-position: 0 0;
}

.canvas-hint {
  padding: var(--s-16) var(--s-8);
  text-align: center;
  color: var(--muted-2);
  font-size: var(--fz-lg);
  font-weight: 500;
  border: 2px dashed var(--stroke-soft);
  border-radius: var(--r-lg);
  letter-spacing: .01em;
}

/* ===================== ELEMENT BLOCKS ===================== */
.el {
  --bg: rgba(255, 255, 255, .04);
  --text: #eaf1ff;
  --pad: 24px;
  --fs: 16px;
  --radius: 18px;
  --shadow: 12;
  --gradA: #4ea1ff;
  --gradB: #ff8a2a;
  --gradAngle: 135;
  --ff: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --fw: 400;
  --lh: 1.55;
  --ls: 0px;
  --ta: left;

  position: relative;
  padding: var(--pad);
  background: var(--bg);
  color: var(--text);
  font-size: var(--fs);
  font-family: var(--ff);
  font-weight: var(--fw);
  line-height: var(--lh);
  letter-spacing: var(--ls);
  text-align: var(--ta);
  border-radius: var(--radius);
  border: 1px solid transparent;
  box-shadow: 0 calc(var(--shadow) * 1px) calc(var(--shadow) * 2.6px) rgba(0, 0, 0, .18);
  transition:
    box-shadow var(--transition),
    border-color var(--transition),
    transform var(--transition);
  cursor: none;
}

.el.grad {
  background: linear-gradient(calc(var(--gradAngle) * 1deg), var(--gradA), var(--gradB));
}

.el:hover {
  border-color: rgba(255, 255, 255, .06);
  transform: translateY(-1px);
}

.el.selected {
  border-color: var(--brand-blue) !important;
  box-shadow: var(--glow-blue), 0 calc(var(--shadow) * 1px) calc(var(--shadow) * 2.6px) rgba(0, 0, 0, .22);
}

.el.selected::before,
.el.selected::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.el.selected::before {
  top: -8px; left: var(--s-2);
  padding: 2px var(--s-2);
  border-radius: var(--r-xs);
  background: var(--brand-blue);
  color: #001;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  content: attr(data-name);
  text-align: left;
  line-height: 1.4;
}

.el.hidden { opacity: .30; filter: grayscale(.6); }
.el.locked { cursor: not-allowed; }
.el.locked::after {
  content: "🔒";
  position: absolute;
  top: 8px; right: 10px;
  font-size: 11px;
  opacity: .55;
}

.el.dragging { opacity: .5; transform: scale(.98); }

/* Drop indicator between flow elements */
.canvas:not(.no-hint) > .el + .el {
  position: relative;
}

/* ===================== INNER CONTENT ===================== */
.el .inner {
  outline: none;
  cursor: text;
}

.el[contenteditable="true"]:focus,
.el .inner [contenteditable="true"]:focus {
  outline: 2px dashed rgba(78,161,255,.40);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Type-specific styles */
.el.hero .inner h1 {
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin: 0 0 var(--s-4);
}

.el.hero .inner p {
  font-size: calc(var(--fs) * 1.05);
  max-width: 68ch;
  margin: 0;
  color: currentColor;
  opacity: .82;
}

.el.text .inner p { margin: 0; }

.el.card .inner .title {
  font-size: calc(var(--fs) * 1.2);
  font-weight: 700;
  margin-bottom: var(--s-2);
}

.el.card .inner .desc {
  opacity: .78;
  line-height: 1.6;
}

.el.button {
  display: inline-block;
  padding: 0;
}

.el.button .inner {
  display: inline-flex;
  padding: var(--pad);
}

.el.button .inner a {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-6);
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-2));
  border-radius: var(--r-pill);
  color: #fff;
  font-weight: 700;
  transition: transform var(--transition);
  box-shadow: 0 8px 24px rgba(78,161,255,.28);
}

.el.button .inner a:hover { transform: translateY(-2px) scale(1.02); }

.el.image { padding: 0; overflow: hidden; }
.el.image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.el.video { padding: 0; }
.el.video .video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-3);
  height: 240px;
  background: rgba(0,0,0,.30);
  border-radius: inherit;
  color: var(--muted);
}

.el.video .play-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: var(--brand-blue);
}

.el.divider { padding: var(--s-3) var(--s-2); }
.el.divider .line {
  height: 1px;
  background: linear-gradient(90deg, transparent, currentColor, transparent);
  opacity: .30;
}

.el.spacer {
  min-height: 48px;
  color: var(--muted-2);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .15em;
  display: grid;
  place-items: center;
  opacity: .4;
}

.el.form .inner {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  max-width: 480px;
}

.el.form label {
  font-size: calc(var(--fs) * .8);
  font-weight: 600;
  letter-spacing: .02em;
  opacity: .8;
}

.el.form input,
.el.form textarea {
  padding: var(--s-3) var(--s-4);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--stroke);
  border-radius: var(--r-md);
  color: inherit;
  font-size: calc(var(--fs) * .95);
  transition: border-color var(--transition);
}

.el.form input:focus,
.el.form textarea:focus {
  outline: none;
  border-color: var(--brand-blue);
}

.el.form button {
  padding: var(--s-3) var(--s-6);
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-2));
  color: #fff;
  border: none;
  border-radius: var(--r-md);
  font-weight: 700;
  cursor: none;
  transition: transform var(--transition);
  align-self: flex-start;
}

.el.form button:hover { transform: translateY(-1px); }

/* ===================== FREE POSITIONING ===================== */
.el.free {
  position: absolute;
  cursor: move;
  margin: 0 !important;
}

.el.free.selected {
  z-index: 10;
}

.handles {
  position: absolute;
  inset: -6px;
  pointer-events: none;
}

.el.selected .handle,
.el.free.selected .handle {
  pointer-events: auto;
}

.handle {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--brand-blue);
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
  transition: transform var(--transition);
  pointer-events: none;
}

.handle:hover { transform: scale(1.25); }

.handle.nw { top: -6px;    left: -6px;    cursor: nwse-resize; }
.handle.ne { top: -6px;    right: -6px;   cursor: nesw-resize; }
.handle.sw { bottom: -6px; left: -6px;    cursor: nesw-resize; }
.handle.se { bottom: -6px; right: -6px;   cursor: nwse-resize; }

.el:not(.selected) .handle { display: none; }