/* ChatUGC frontend — calm premium, light, Inter. No gradients, no fake
   placeholders. Real video thumbnails / character images are the colour. */
:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --sidebar-bg: #f4f4f2;
  --ink: #111111;
  --muted: #6b6b6b;
  --faint: #9a9a9a;
  --line: #e6e6e2;
  --line-strong: #d8d8d2;
  --accent: #111111;
  --accent-ink: #ffffff;
  --good: #1a7f37;
  --bad: #b3261e;
  --warn-bg: #fff7e6;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 4px 16px rgba(0, 0, 0, 0.05);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }
a { color: inherit; }

/* ---------------------------------------------------------------- layout */
.app { display: flex; height: 100vh; overflow: hidden; }
.sidebar {
  width: 264px; flex: 0 0 264px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
  transition: margin-left 0.22s ease;
}
.sidebar.collapsed { margin-left: -264px; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--bg); }

.sidebar-top { padding: 14px 12px 8px; }
.brand { display: flex; align-items: center; gap: 8px; padding: 2px 6px 12px; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ink); display: inline-block; }
.brand small { font-weight: 500; color: var(--muted); font-size: 12px; margin-left: 2px; }
.btn {
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink);
  border-radius: var(--radius-sm); padding: 8px 12px; font-size: 14px; font-weight: 500;
}
.btn:hover { border-color: var(--ink); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { background: #000; }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--ink); border-color: var(--line); }
.btn-block { width: 100%; text-align: left; }
.btn-sm { padding: 5px 9px; font-size: 13px; }

.chat-list { flex: 1; overflow-y: auto; padding: 4px 8px; }
.chat-list-label { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); padding: 8px 8px 4px; }
.chat-item {
  display: block; width: 100%; text-align: left;
  padding: 8px 10px; margin: 1px 0; border: 0; border-radius: var(--radius-sm);
  background: transparent; color: var(--ink); font-size: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chat-item:hover { background: #e9e9e6; }
.chat-item.active { background: #e9e9e6; font-weight: 600; }
.chat-item .sub { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
.empty-note { color: var(--muted); font-size: 13px; padding: 8px 10px; }

.sidebar-bottom { border-top: 1px solid var(--line); padding: 12px; }
.balance-row { display: flex; justify-content: space-between; align-items: baseline; padding: 2px 2px 8px; }
.balance-row .label { font-size: 13px; color: var(--muted); }
.balance-row .value { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.topup-row { display: flex; gap: 6px; }
.topup-row .btn { flex: 1; padding: 7px 0; text-align: center; }
.user-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; font-size: 13px; color: var(--muted); min-height: 20px; }
.user-row .email { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }

/* ---------------------------------------------------------------- header */
.topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--bg);
}
.topbar h1 { font-size: 15px; font-weight: 600; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar .spacer { flex: 1; }
.topbar .status { font-size: 12px; color: var(--muted); }
.status.ok { color: var(--good); }
.status.bad { color: var(--bad); }

/* ---------------------------------------------------------------- banners */
.banner {
  margin: 12px 16px 0; padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--warn-bg); border: 1px solid #f0d9a0; font-size: 13.5px; color: #5c4300;
}
.banner.error { background: #fdecea; border-color: #f3c1bd; color: #7a1f1a; }
.banner.info { background: #eef4ff; border-color: #c3d5f5; color: #1d3a6e; }

/* ---------------------------------------------------------------- chat */
.chat-scroll { flex: 1; overflow-y: auto; padding: 8px 0 24px; }
.centered { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.greeting { text-align: center; padding: 72px 20px 0; }
.greeting h2 { font-size: 30px; font-weight: 650; letter-spacing: -0.03em; margin: 0 0 8px; }
.greeting p { color: var(--muted); margin: 0 auto 22px; max-width: 520px; font-size: 15px; }
.greeting .examples { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.chip {
  border: 1px solid var(--line-strong); background: var(--surface); border-radius: 999px;
  padding: 7px 13px; font-size: 13.5px; color: var(--ink);
}
.chip:hover { border-color: var(--ink); }
.chip.selected { background: var(--ink); color: #fff; border-color: var(--ink); }

.msg { display: flex; gap: 10px; padding: 14px 0; }
.msg .avatar {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--ink); color: #fff; font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.msg.user .avatar { background: #e9e9e6; color: var(--ink); }
.msg .body { flex: 1; min-width: 0; }
.msg .who { font-size: 12.5px; font-weight: 600; color: var(--muted); margin-bottom: 2px; }
.msg .text { white-space: pre-wrap; word-break: break-word; }
.msg .text a { text-decoration: underline; }

/* quick replies / choices inside a message */
.choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

/* hook cards — real data only: hook text + views/likes/author from research */
.hook-list { display: grid; gap: 8px; margin-top: 10px; }
.hook-card {
  display: flex; gap: 10px; align-items: flex-start; text-align: left;
  border: 1px solid var(--line-strong); background: var(--surface);
  border-radius: var(--radius); padding: 12px 14px; width: 100%;
}
.hook-card:hover { border-color: var(--ink); }
.hook-card.selected { border-color: var(--ink); box-shadow: var(--shadow); }
.hook-card input { margin-top: 3px; accent-color: #111; }
.hook-card .hook-text { font-weight: 550; }
.hook-card .hook-meta { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.hook-card .hook-pattern { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; border: 1px solid var(--line); border-radius: 999px; padding: 1px 7px; margin-top: 5px; color: var(--muted); }

/* progress — steps only move when the real call starts / finishes */
.progress { border: 1px solid var(--line-strong); background: var(--surface); border-radius: var(--radius); padding: 14px 16px; margin-top: 10px; box-shadow: var(--shadow); }
.progress h4 { margin: 0 0 10px; font-size: 14px; }
.progress ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.progress li { display: flex; gap: 9px; align-items: baseline; color: var(--faint); font-size: 14px; }
.progress li .mark { flex: 0 0 18px; text-align: center; font-weight: 700; }
.progress li.active { color: var(--ink); font-weight: 550; }
.progress li.active .mark { animation: pulse 1.1s ease-in-out infinite; }
.progress li.done { color: var(--ink); }
.progress li.done .mark { color: var(--good); }
.progress li.failed { color: var(--bad); }
.progress .detail { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* media — real images / videos only */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin-top: 10px; }
.media-card { border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.media-card img, .media-card video { display: block; width: 100%; aspect-ratio: 9 / 16; object-fit: cover; background: #111; }
.media-card .cap { padding: 8px 10px; font-size: 12.5px; color: var(--muted); }
.media-card .cap b { color: var(--ink); font-weight: 600; display: block; font-size: 13px; }
.media-card a { color: var(--ink); }

/* ---------------------------------------------------------------- composer */
.composer-wrap { padding: 0 16px 16px; background: var(--bg); }
.composer-wrap.centered-mode { padding-top: 8px; }
.composer { max-width: 760px; margin: 0 auto; }
.composer-box {
  display: flex; align-items: flex-end; gap: 8px;
  background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: 22px; padding: 8px 8px 8px 16px; box-shadow: var(--shadow);
}
.composer-box:focus-within { border-color: var(--ink); }
.composer-box textarea {
  flex: 1; border: 0; outline: 0; resize: none; background: transparent;
  font-size: 15px; line-height: 1.5; max-height: 160px; padding: 6px 0; color: var(--ink);
}
.send-btn {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%; border: 0;
  background: var(--ink); color: #fff; font-size: 16px; line-height: 1;
}
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.composer-note { text-align: center; font-size: 12px; color: var(--faint); margin-top: 8px; }
.composer-note b { color: var(--muted); font-weight: 600; }

@media (max-width: 720px) {
  .sidebar { position: fixed; z-index: 20; height: 100%; box-shadow: var(--shadow); }
  .sidebar.collapsed { margin-left: -264px; }
  .greeting h2 { font-size: 24px; }
}