/* ═══════════════════════════════════════════════════════════════
   Liquid Glass Studio — app styles
   (the glass effect itself is computed by app.js and applied inline
   to #glass-card; everything below is just the workshop around it)
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg: #0b1220;
  --panel: #111a2e;
  --panel-2: #0e1626;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e6ecf7;
  --text-dim: #93a1bc;
  --accent: #22d3ee;
  --accent-2: #4f46e5;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(79, 70, 229, 0.25), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(34, 211, 238, 0.15), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ── Header ─────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 44px; height: 44px; border-radius: 12px; }
.brand-name { margin: 0; font-size: 18px; letter-spacing: 0.2px; }
.brand-tag { margin: 0; color: var(--text-dim); font-size: 12.5px; }
.topnav { display: flex; gap: 18px; }
.topnav a { color: var(--text-dim); text-decoration: none; font-size: 14px; }
.topnav a:hover { color: var(--text); }
.star { color: #facc15; }

/* ── Presets bar ────────────────────────────────────────────── */
.presets {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
}
.presets-label { color: var(--text-dim); font-size: 13px; }
.preset-list { display: flex; gap: 8px; flex-wrap: wrap; flex: 1; }
.preset {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.preset:hover { transform: translateY(-1px); border-color: var(--accent); }
.preset.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

/* ── Workspace layout ───────────────────────────────────────── */
.workspace {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  padding: 20px 24px;
}
@media (max-width: 860px) {
  .workspace { grid-template-columns: 1fr; }
}

/* ── Controls panel ─────────────────────────────────────────── */
.controls {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  height: fit-content;
}
.controls h2 { margin: 0 0 14px; font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); }

.slider-row { margin-bottom: 14px; }
.slider-row label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 13.5px;
  margin-bottom: 6px;
}
.slider-row .value { color: var(--accent); font-variant-numeric: tabular-nums; font-size: 12.5px; }
.slider-row .hint { display: block; color: var(--text-dim); font-size: 11.5px; }
input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

.control-row { margin: 14px 0; font-size: 13.5px; }
.control-row label { display: block; margin-bottom: 6px; }
.control-row .hint { display: block; color: var(--text-dim); font-size: 11.5px; }
.control-row input[type="color"] {
  width: 100%; height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  cursor: pointer;
}
.control-row.checkbox { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.control-row.checkbox input { margin-top: 3px; accent-color: var(--accent); }
.control-row.checkbox em { color: var(--text-dim); font-style: normal; font-size: 12px; }

.bg-buttons { display: flex; gap: 8px; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 13.5px;
  cursor: pointer;
  color: var(--text);
  background: var(--panel-2);
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.15); }
.btn.primary {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #fff;
}
.btn.primary.small { width: auto; margin: 0; padding: 8px 16px; }
.btn.ghost { background: transparent; border: 1px solid var(--line); }
.btn.ghost.small { padding: 5px 10px; font-size: 12.5px; }

/* ── Preview area ───────────────────────────────────────────── */
.preview-area {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  min-height: 460px;
  background: #0d1526;
  touch-action: none;
}
.bg-image {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
}

/* animated demo blobs */
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.85; }
.blob-1 {
  width: 340px; height: 340px; left: -60px; top: -40px;
  background: #f0f;
  background: radial-gradient(circle at 30% 30%, #ff7ad9, #c026d3);
  animation: drift1 16s ease-in-out infinite alternate;
}
.blob-2 {
  width: 380px; height: 380px; right: -80px; top: 20%;
  background: radial-gradient(circle at 60% 40%, #4f46e5, #22d3ee);
  animation: drift2 20s ease-in-out infinite alternate;
}
.blob-3 {
  width: 300px; height: 300px; left: 30%; bottom: -100px;
  background: radial-gradient(circle at 50% 50%, #fbbf24, #f97316);
  animation: drift3 14s ease-in-out infinite alternate;
}
@keyframes drift1 { to { transform: translate(120px, 80px) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-140px, 60px) scale(0.9); } }
@keyframes drift3 { to { transform: translate(-80px, -70px) scale(1.2); } }

/* the glass card — visual properties are driven inline by app.js */
.glass-card {
  position: absolute;
  left: 50%; top: 46%;
  width: min(340px, 78%);
  padding: 18px;
  cursor: grab;
  user-select: none;
  will-change: transform;
  z-index: 5;
}
.glass-card.dragging { cursor: grabbing; }
.glass-card-inner { display: flex; align-items: center; gap: 14px; }
.demo-avatar {
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  flex-shrink: 0;
}
.demo-text { display: flex; flex-direction: column; flex: 1; }
.demo-text strong { font-size: 15px; }
.demo-text span { color: rgba(255, 255, 255, 0.75); font-size: 12px; }
.demo-pill {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
}
.glass-card-row { display: flex; gap: 8px; margin-top: 14px; }
.glass-card-row span {
  height: 7px; border-radius: 99px;
  background: rgba(255, 255, 255, 0.35);
}
.glass-card-row span:nth-child(1) { width: 55%; }
.glass-card-row span:nth-child(2) { width: 28%; }
.glass-card-row span:nth-child(3) { width: 12%; }

.drag-hint {
  position: absolute;
  bottom: 14px; left: 0; right: 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12.5px;
  pointer-events: none;
}

/* highlight when an image is being dragged over the preview */
.preview-area.drop-target {
  outline: 3px dashed var(--accent);
  outline-offset: -14px;
}
.preview-area.drop-target::after {
  content: "drop the image to set it as background";
  position: absolute;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 12.5px;
  padding: 6px 14px;
  border-radius: 999px;
  pointer-events: none;
  z-index: 10;
}

/* ── Export panel ───────────────────────────────────────────── */
.export-panel {
  margin: 0 24px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.export-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.export-head h2 { margin: 0; font-size: 16px; }
.tabs { display: flex; gap: 6px; }
.tab {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12.5px;
  cursor: pointer;
}
.tab.active { color: var(--text); border-color: var(--accent); }
.export-note { color: var(--text-dim); font-size: 12.5px; margin: 8px 0 12px; }
.code-wrap { position: relative; }
.code-wrap pre {
  margin: 0;
  background: #070d18;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  font: 12.5px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #c9e3ff;
  white-space: pre;
}
.copy-btn { position: absolute; top: 10px; right: 10px; }

/* ── How it works ───────────────────────────────────────────── */
.how { margin: 8px 24px 24px; padding: 22px; }
.how h2 { font-size: 18px; }
.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.how article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.how h3 { margin-top: 0; font-size: 14.5px; }
.how p { color: var(--text-dim); font-size: 13.5px; margin-bottom: 0; }
.how code {
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 12px;
}
.how-footer { color: var(--text-dim); font-size: 12.5px; }

/* ── Footer & toast ─────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  padding: 16px 24px 28px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}
.footer a { color: var(--accent); text-decoration: none; }

.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: #16a34a;
  color: #fff;
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 14px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  z-index: 50;
}