/* ============================================================================
   MockUp-Forge — ultra-premium, minimalist, fluid
   ========================================================================== */
:root {
  --bg: #f7f4ee;
  --ink: #2c333b;
  --ink-soft: #5c656f;
  --muted: #98a1ab;
  --line: #e9e4da;
  --surface: #ffffff;
  --lav: #cbc2ee;
  --lav-deep: #897fd0;
  --sage: #a9d4b8;
  --sage-deep: #5fa77e;
  --sky: #b3d4ec;
  --sky-deep: #6aa2cf;
  --cream: #f0e7d6;
  --r: 18px;
  --r-lg: 28px;
  --shadow-1: 0 2px 10px rgba(50, 60, 74, 0.05);
  --shadow-2: 0 16px 44px -14px rgba(50, 60, 74, 0.18);
  --shadow-3: 0 30px 70px -24px rgba(50, 60, 74, 0.28);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, system-ui, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  overflow-x: hidden; /* iPhone: never let the mockup push the page sideways */
  background:
    radial-gradient(1100px 520px at 12% -8%, #efeafc 0%, transparent 58%),
    radial-gradient(900px 520px at 108% 4%, #e6f2ea 0%, transparent 52%),
    var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }
::selection { background: var(--lav); color: #2b2350; }

.site {
  max-width: 1200px; margin: 0 auto;
  padding: 0 max(24px, env(safe-area-inset-left)) 0 max(24px, env(safe-area-inset-right));
}

/* ---- Top bar ------------------------------------------------------------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(18px + env(safe-area-inset-top)) 4px 18px; position: sticky; top: 0; z-index: 20;
}
.topbar::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(247, 244, 238, 0.7); backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  mask: linear-gradient(#000 60%, transparent);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 750; font-size: 17px; letter-spacing: -0.02em; }
.brand .logo { width: 30px; height: 30px; border-radius: 9px; box-shadow: var(--shadow-1); }
.top-actions { display: flex; align-items: center; gap: 10px; }
.pill-btn {
  padding: 9px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 650; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-1);
  transition: transform 0.15s var(--ease), box-shadow 0.2s;
}
.pill-btn:hover { box-shadow: var(--shadow-2); }
.pill-btn:active { transform: scale(0.97); }

/* ---- Hero ---------------------------------------------------------------- */
.hero { text-align: center; padding: 46px 0 30px; animation: rise 0.7s var(--ease) both; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; font-weight: 650;
  color: var(--lav-deep); background: #efeafc; border: 1px solid #e3ddf6;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 22px; letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 62px); font-weight: 800; letter-spacing: -0.035em; line-height: 1.05;
  background: linear-gradient(135deg, #2c333b 0%, #6a5fb0 55%, #5fa77e 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero .sub { max-width: 560px; margin: 20px auto 0; font-size: clamp(15px, 2.2vw, 18px); color: var(--ink-soft); }

/* ---- Input card ---------------------------------------------------------- */
.input-card {
  max-width: 720px; margin: 34px auto 0; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow-2);
  padding: 12px; animation: rise 0.8s var(--ease) 0.05s both;
}
.mode-tabs { display: flex; gap: 4px; padding: 4px; background: #f2eee6; border-radius: 999px; width: max-content; margin: 6px auto 12px; }
.mode-tab {
  padding: 9px 22px; border-radius: 999px; font-size: 13.5px; font-weight: 650; color: var(--ink-soft);
  transition: color 0.2s, background 0.25s var(--ease), box-shadow 0.2s;
}
.mode-tab.on { color: var(--ink); background: #fff; box-shadow: var(--shadow-1); }

.url-row { display: flex; gap: 10px; padding: 6px; }
.url-row input {
  flex: 1; padding: 15px 18px; font-size: 15.5px; color: var(--ink);
  background: #faf8f4; border: 1.5px solid var(--line); border-radius: 15px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.url-row input:focus { border-color: var(--lav); background: #fff; box-shadow: 0 0 0 4px rgba(203, 194, 238, 0.28); }
.generate {
  flex: none; display: inline-flex; align-items: center; gap: 9px; padding: 15px 24px; font-size: 15px; font-weight: 700;
  color: #2b2350; border-radius: 15px;
  background: linear-gradient(135deg, var(--lav) 0%, var(--sky) 100%);
  box-shadow: 0 10px 24px -8px rgba(138, 127, 208, 0.6); transition: transform 0.15s var(--ease), filter 0.2s;
}
.generate:hover { filter: brightness(1.04); }
.generate:active { transform: scale(0.98); }
.generate[disabled] { opacity: 0.65; cursor: default; }

.code-drop { padding: 6px; }
.code-area {
  width: 100%; min-height: 150px; resize: vertical; padding: 16px 18px; font-size: 13.5px; line-height: 1.6;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: var(--ink);
  background: #faf8f4; border: 1.5px dashed var(--line); border-radius: 15px; outline: none;
  transition: border-color 0.2s, background 0.2s;
}
.code-area:focus { border-color: var(--sage); background: #fff; }
.code-area.drag { border-color: var(--sage-deep); background: #f0f8f2; }
.drop-hint { text-align: center; font-size: 12.5px; color: var(--muted); margin-top: 8px; }

.hero-error { color: #c96b5a; font-size: 13.5px; font-weight: 600; margin-top: 12px; min-height: 18px; }

/* ---- Editor -------------------------------------------------------------- */
.editor {
  display: grid; grid-template-columns: 1fr 312px; gap: 22px; align-items: start;
  padding: 20px 0 70px; scroll-margin-top: 80px;
}
.preview-wrap {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow-1);
  background:
    conic-gradient(from 90deg at 1px 1px, transparent 90deg, rgba(150,160,175,0.05) 0) 0 0 / 22px 22px,
    var(--surface);
}
.preview-canvas {
  display: flex; align-items: center; justify-content: center;
  min-height: 440px; padding: 26px; overflow: auto;
  transition: opacity 0.3s var(--ease);
}
.preview-canvas .mf-stage { max-width: 100%; transition: all 0.35s var(--ease); }
.preview-canvas .mf-frame { transition: border-radius 0.3s var(--ease), box-shadow 0.35s var(--ease); }
.preview-canvas.busy { opacity: 0.45; }
.canvas-loader {
  position: absolute; inset: 0; display: none; align-items: center; justify-content: center; gap: 12px;
  color: var(--ink-soft); font-weight: 600; font-size: 14px;
}
.preview-wrap.loading .canvas-loader { display: flex; }

/* ---- Controls ------------------------------------------------------------ */
.controls {
  position: sticky; top: 86px; display: flex; flex-direction: column; gap: 18px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--shadow-2); padding: 22px; animation: rise 0.6s var(--ease) both;
}
.ctrl-group h4 { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-bottom: 11px; }
.swatches { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.swatch {
  aspect-ratio: 1; border-radius: 11px; border: 2px solid transparent; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.05);
  transition: transform 0.15s var(--ease), border-color 0.2s;
}
.swatch:hover { transform: scale(1.08); }
.swatch.on { border-color: var(--ink); transform: scale(1.06); }

.seg { display: flex; gap: 4px; padding: 4px; background: #f2eee6; border-radius: 12px; }
.seg button {
  flex: 1; padding: 9px 6px; border-radius: 9px; font-size: 12.5px; font-weight: 650; color: var(--ink-soft);
  transition: color 0.2s, background 0.25s var(--ease), box-shadow 0.2s;
}
.seg button.on { color: var(--ink); background: #fff; box-shadow: var(--shadow-1); }

.slider { width: 100%; -webkit-appearance: none; height: 6px; border-radius: 999px; background: #e9e4da; outline: none; }
.slider::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 2px solid var(--lav); box-shadow: var(--shadow-1); cursor: pointer; }
.slider::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 2px solid var(--lav); cursor: pointer; }
.slider-val { float: right; font-size: 12px; color: var(--muted); font-weight: 600; }

.export-btn {
  margin-top: 4px; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 15px; font-size: 15px; font-weight: 750; color: #1c4a34; border-radius: 15px;
  background: linear-gradient(135deg, var(--sage) 0%, var(--sky) 100%);
  box-shadow: 0 12px 26px -10px rgba(95, 167, 126, 0.6); transition: transform 0.15s var(--ease), filter 0.2s;
}
.export-btn:hover { filter: brightness(1.04); }
.export-btn:active { transform: scale(0.98); }
.export-btn[disabled] { opacity: 0.55; cursor: default; filter: grayscale(0.3); }

/* ---- Misc ---------------------------------------------------------------- */
.spinner { width: 20px; height: 20px; border-radius: 50%; border: 2.5px solid rgba(0,0,0,0.1); border-top-color: var(--lav-deep); animation: spin 0.7s linear infinite; }
.spinner.sm { width: 16px; height: 16px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  padding: 13px 22px; border-radius: 999px; color: #fff; font-size: 14px; font-weight: 600;
  background: var(--ink); box-shadow: var(--shadow-3); z-index: 60; animation: toastIn 0.3s var(--ease) both;
}
.toast.good { background: linear-gradient(135deg, #4fa585, #6bb6a0); }
.toast.bad { background: linear-gradient(135deg, #cf7f6b, #d99a86); }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 12px); } }

.foot { text-align: center; color: var(--muted); font-size: 12.5px; padding: 10px 0 40px; }

/* ---- Image upload mode --------------------------------------------------- */
.img-drop {
  padding: 6px; display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.img-zone {
  width: 100%; min-height: 150px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  padding: 26px; text-align: center; color: var(--ink-soft); font-size: 14px;
  background: #faf8f4; border: 1.5px dashed var(--line); border-radius: 15px; cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.img-zone.drag, .img-zone:hover { border-color: var(--sage-deep); background: #f0f8f2; }
.img-zone .up-btn {
  padding: 11px 20px; border-radius: 12px; font-weight: 700; font-size: 14px; color: #2b2350;
  background: linear-gradient(135deg, var(--lav), var(--sky)); box-shadow: var(--shadow-1);
}

/* ---- New controls: custom bg, toggles ------------------------------------ */
.custom-bg { display: flex; align-items: center; gap: 10px; }
.custom-bg input[type="color"] {
  width: 44px; height: 36px; border: 1px solid var(--line); border-radius: 10px; background: none; cursor: pointer; padding: 2px;
}
.custom-bg .cbg-clear { font-size: 12.5px; font-weight: 650; color: var(--ink-soft); padding: 8px 12px; border-radius: 9px; background: #f2eee6; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 4px 0; }
.toggle-row span { font-size: 13.5px; font-weight: 600; color: var(--ink-soft); }
.toggle {
  position: relative; width: 44px; height: 26px; border-radius: 999px; background: #dcd8ce; flex: none;
  transition: background 0.25s var(--ease);
}
.toggle::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-1); transition: transform 0.25s var(--ease); }
.toggle.on { background: var(--sage-deep); }
.toggle.on::after { transform: translateX(18px); }
.export-row { display: flex; gap: 10px; margin-top: 4px; }
.export-row .export-btn { flex: 1; margin-top: 0; }
.copy-btn {
  flex: none; width: 52px; display: grid; place-items: center; border-radius: 15px;
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-1); color: var(--ink);
  transition: box-shadow 0.2s, transform 0.15s var(--ease);
}
.copy-btn:hover { box-shadow: var(--shadow-2); }
.copy-btn:active { transform: scale(0.95); }

/* Preview: aspect stages render responsively (fixed px is for export only). */
.preview-canvas .mf-stage.ar-16x9 { width: 100% !important; max-width: 560px; height: auto !important; aspect-ratio: 16 / 9; }
.preview-canvas .mf-stage.ar-1x1 { width: 100% !important; max-width: 460px; height: auto !important; aspect-ratio: 1 / 1; }
.preview-canvas .mf-stage.ar-9x16 { width: 100% !important; max-width: 300px; height: auto !important; aspect-ratio: 9 / 16; }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 900px) {
  .editor { grid-template-columns: 1fr; }
  .controls { position: static; }
  .swatches { grid-template-columns: repeat(10, 1fr); }
}
@media (max-width: 560px) {
  .site { padding: 0 max(16px, env(safe-area-inset-left)) 0 max(16px, env(safe-area-inset-right)); }
  .url-row { flex-direction: column; }
  .generate { justify-content: center; }
  .swatches { grid-template-columns: repeat(5, 1fr); }
  .preview-canvas { padding: 14px; min-height: 320px; }
  .hero { padding: 30px 0 20px; }
  /* iPhone Safari zooms in when focusing an input < 16px — force 16px. */
  .url-row input, .code-area, .custom-bg input { font-size: 16px; }
  .foot { padding-bottom: calc(40px + env(safe-area-inset-bottom)); }
}
@media (prefers-reduced-motion: reduce) { * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }