:root {
  --bg: #f6f2ea;
  --surface: #fffdf8;
  --ink: #2d2a24;
  --muted: #8a8275;
  --line: #e4dccd;
  --oak: #b08d57;
  --oak-dark: #8f6f3f;
  --accent: #2b2b2b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(45, 42, 36, .04), 0 8px 24px rgba(45, 42, 36, .06);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-mark { font-weight: 700; letter-spacing: -.02em; font-size: 20px; }
.brand-sub { color: var(--oak-dark); font-weight: 500; font-size: 14px; }
.header-link { color: var(--muted); text-decoration: none; font-size: 14px; }
.header-link:hover { color: var(--ink); }
.header-nav { display: flex; gap: 6px; }
.header-nav a { color: var(--muted); text-decoration: none; font-size: 14px; padding: 6px 12px; border-radius: 999px; }
.header-nav a:hover { color: var(--ink); }
.header-nav a.active { background: var(--accent); color: #fff; }

.auth-status { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.auth-status .auth-credits { background: #fbf3e3; color: var(--oak-dark); font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.auth-status .auth-email { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-status .auth-out { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 8px; padding: 4px 10px; font-size: 12px; cursor: pointer; }
.auth-status .auth-out:hover { border-color: var(--oak); }
.auth-status .auth-link { color: var(--oak-dark); text-decoration: none; font-weight: 500; padding: 4px 10px; border: 1px solid var(--line); border-radius: 8px; }
.auth-status .auth-link:hover { border-color: var(--oak); }

.rule { border: none; border-top: 1px solid var(--line); margin: 4px 0; }
.verify-note { font-size: 12px; color: var(--muted); margin: 0; line-height: 1.45; }
input[type=text] { width: 100%; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); padding: 9px 10px; font: inherit; font-size: 14px; }
input[type=text]:focus { outline: none; border-color: var(--oak); }
.flyer-frame { width: 100%; height: 560px; border: 1px solid var(--line); border-radius: var(--radius); margin-top: 14px; background: #cfd3da; }
.dropzone.sm { min-height: 110px; }
.cost-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; background: #fbf8f1; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; }
.cost-row strong { font-size: 16px; color: var(--oak-dark); }
video.flyer-frame { object-fit: contain; }
.prompt-box ul { margin: 8px 0 0; padding-left: 18px; }
.prompt-box li { word-break: break-all; margin-bottom: 4px; }

main { max-width: 1180px; margin: 0 auto; padding: 0 20px 56px; }
.hero { text-align: center; padding: 44px 0 28px; }
.hero h1 { font-size: clamp(28px, 4vw, 40px); margin: 0 0 8px; letter-spacing: -.02em; }
.hero p { color: var(--muted); margin: 0; font-size: 17px; }

.studio { display: grid; grid-template-columns: 380px 1fr; gap: 22px; align-items: start; }
@media (max-width: 880px) { .studio { grid-template-columns: 1fr; } }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.controls { display: flex; flex-direction: column; gap: 16px; }

.dropzone {
  border: 1.5px dashed var(--line); border-radius: var(--radius);
  background: #fbf8f1; min-height: 168px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  transition: border-color .15s, background .15s; position: relative;
}
.dropzone.drag, .dropzone:hover { border-color: var(--oak); background: #f7f1e6; }
.dropzone:focus-visible { outline: 2px solid var(--oak); outline-offset: 2px; }
.dz-inner { text-align: center; padding: 18px; }
.dz-icon { font-size: 28px; color: var(--oak); transform: translateY(2px); }
.dz-title { margin: 8px 0 2px; font-weight: 600; }
.dz-hint { margin: 0; color: var(--muted); font-size: 13px; }
.preview { width: 100%; height: 100%; object-fit: cover; max-height: 280px; }

.group { border: none; padding: 0; margin: 0; }
.group legend, .lbl { font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 0; margin-bottom: 8px; display: block; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.chk { display: flex; align-items: flex-start; gap: 9px; padding: 6px 0; cursor: pointer; font-size: 15px; }
.chk input { margin-top: 3px; accent-color: var(--oak); width: 16px; height: 16px; }
.chk small { display: block; color: var(--muted); font-size: 12px; }

select, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); color: var(--ink); padding: 9px 10px; font: inherit; font-size: 14px;
}
select:focus, textarea:focus { outline: none; border-color: var(--oak); }
textarea { resize: vertical; min-height: 56px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  border-radius: 999px; padding: 7px 13px; font-size: 13px; cursor: pointer; transition: all .12s;
}
.chip:hover { border-color: var(--oak); }
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }

input[type=range] { width: 100%; accent-color: var(--oak); }
.range-labels { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 2px; }

.btn-primary {
  background: var(--accent); color: #fff; border: none; border-radius: 11px;
  padding: 13px; font-size: 16px; font-weight: 600; cursor: pointer; transition: opacity .15s;
}
.btn-primary:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary:not(:disabled):hover { background: #1c1c1c; }
.btn-secondary {
  flex: 1; background: var(--surface); color: var(--ink); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px; font-weight: 600; cursor: pointer; font-size: 14px;
}
.btn-secondary:hover { border-color: var(--oak); }

.status { font-size: 13px; color: var(--muted); margin: 0; min-height: 18px; text-align: center; }
.status.err { color: #b4452f; }

.result { min-height: 420px; display: flex; flex-direction: column; }
.result-empty { margin: auto; text-align: center; color: var(--muted); }
.result-empty .muted { font-size: 13px; }

.ba { position: relative; width: 100%; border-radius: var(--radius); overflow: hidden; user-select: none; }
.ba-img { display: block; width: 100%; }
.ba-before-wrap { position: absolute; inset: 0; width: 50%; overflow: hidden; border-right: 2px solid #fff; }
.ba-before-wrap .ba-img { width: 100%; max-width: none; }
#ba-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.ba-tag { position: absolute; bottom: 10px; background: rgba(0,0,0,.55); color: #fff; font-size: 11px; padding: 3px 9px; border-radius: 999px; pointer-events: none; }
.ba-tag-l { left: 10px; } .ba-tag-r { right: 10px; }

.result-actions { display: flex; gap: 10px; margin-top: 14px; }
.prompt-box { margin-top: 14px; font-size: 13px; color: var(--muted); }
.prompt-box summary { cursor: pointer; }
.prompt-box p { background: #fbf8f1; border: 1px solid var(--line); border-radius: 10px; padding: 10px; margin-top: 8px; line-height: 1.5; }

.disclaimer { text-align: center; color: var(--muted); font-size: 12px; max-width: 640px; margin: 28px auto 0; }

.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--line); border-top-color: var(--oak); border-radius: 50%; animation: s .8s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes s { to { transform: rotate(360deg); } }