:root {
  --bg: #f4efe8;
  --bg-strong: #efe7dc;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --ink: #1f1713;
  --muted: #8a776c;
  --line: rgba(55, 38, 27, 0.08);
  --shadow: 0 24px 70px rgba(84, 58, 34, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.75), transparent 35%),
    radial-gradient(circle at bottom right, rgba(230,211,193,0.55), transparent 30%),
    linear-gradient(135deg, #f8f5ef 0%, #f2ebdf 40%, #eee4d7 100%);
}
.page-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 320px 1fr;
}
.history-panel {
  border-right: 1px solid var(--line);
  padding: 28px 22px;
  background: linear-gradient(180deg, rgba(255,255,255,0.56), rgba(255,255,255,0.28));
  backdrop-filter: blur(18px);
}
.brand-row { display:flex; align-items:center; gap:10px; margin-bottom: 18px; }
.brand-mark { font-weight: 700; font-size: 28px; letter-spacing: -0.03em; }
.brand-sub { color: var(--muted); font-size: 15px; }
.primary-button, .generate-button {
  border: 0; cursor: pointer; color: #fff; background: #171210; border-radius: 999px;
  padding: 16px 24px; font-size: 16px; font-weight: 600; box-shadow: var(--shadow);
}
.primary-button.wide { width: 100%; }
.history-empty { color: var(--muted); font-size: 15px; line-height: 1.7; margin-top: 28px; }
.history-list { display:flex; flex-direction:column; gap:14px; margin-top: 18px; }
.history-item {
  background: rgba(255,255,255,0.66); border: 1px solid rgba(31,23,19,0.06); border-radius: 20px; padding: 14px;
}
.history-item strong { display:block; font-size:14px; margin-bottom: 8px; }
.history-item span { color: var(--muted); font-size: 13px; }
.workspace { padding: 26px 40px 40px; display:flex; flex-direction:column; gap: 28px; }
.topbar { display:flex; justify-content:space-between; align-items:center; gap:20px; }
.topbar-title { font-weight:700; font-size: 18px; }
.topbar-subtitle { color: var(--muted); font-size: 14px; margin-top: 4px; }
.topbar-right { display:flex; align-items:center; gap: 12px; }
.ghost-link, .ghost-button {
  text-decoration:none; color: var(--ink); border: 1px solid var(--line); background: rgba(255,255,255,0.55); border-radius: 999px;
  padding: 10px 16px; font-size: 14px; cursor:pointer;
}
.hero-block { padding: 8vh 0 3vh; text-align: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: 12px; color: var(--muted); }
.hero-block h1 {
  margin: 14px 0 16px; font-size: clamp(54px, 7vw, 96px); line-height: .96; font-family: var(--serif); letter-spacing: -0.045em;
}
.hero-copy { max-width: 640px; margin: 0 auto; color: #7f6c61; font-size: 22px; line-height: 1.6; font-family: var(--serif); }
.gallery-section {
  min-height: 280px; border-radius: 34px; border: 1px solid rgba(31,23,19,0.05); background: rgba(255,255,255,0.32);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6); padding: 26px;
}
.gallery-placeholder { min-height: 220px; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; }
.placeholder-title { font-family: var(--serif); font-size: 34px; line-height: 1.1; max-width: 560px; }
.placeholder-subtitle { margin-top: 12px; color: var(--muted); font-size: 16px; }
.gallery-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.gallery-card { background: var(--panel-strong); border-radius: 22px; padding: 12px; box-shadow: var(--shadow); }
.gallery-card img { width: 100%; display:block; border-radius: 16px; aspect-ratio: 1 / 1; object-fit: cover; background:#ece4d8; }
.gallery-card a { display:inline-block; margin-top:10px; color:#2b211c; font-size:14px; }
.composer-card {
  margin-top: auto; background: var(--panel-strong); border: 1px solid rgba(31,23,19,0.05); box-shadow: var(--shadow);
  border-radius: 34px; padding: 24px;
}
.composer-head { display:flex; justify-content:space-between; align-items:flex-start; gap:20px; }
.field-label { font-size: 15px; color: var(--muted); }
.field-help { font-size: 13px; color: #aa978b; margin-top: 6px; }
.wallet-chip, .model-chip {
  border-radius: 999px; padding: 10px 16px; background: #f5f1ea; border: 1px solid var(--line); color: #2c211c; font-size: 14px;
}
.prompt-input {
  width: 100%; min-height: 150px; margin-top: 16px; resize: vertical; border: 0; outline: none; background: transparent; font: 500 24px/1.6 var(--serif);
  color: var(--ink);
}
.prompt-input::placeholder { color: #b4a397; }
.composer-footer { display:flex; justify-content:space-between; align-items:center; gap:18px; margin-top: 14px; flex-wrap: wrap; }
.control-row { display:flex; align-items:center; gap: 14px; flex-wrap: wrap; }
.count-control { display:flex; align-items:center; gap: 10px; border: 1px solid var(--line); border-radius: 999px; padding: 10px 14px; background:#f7f2eb; }
.count-control select { border:0; background:transparent; font-size:14px; outline:none; }
.generate-button { min-width: 140px; }
.status-bar { min-height: 24px; margin-top: 12px; color: var(--muted); font-size: 14px; }
.login-overlay {
  position: fixed; inset: 0; display:flex; align-items:center; justify-content:center; padding: 24px;
  background: rgba(243, 236, 228, 0.86); backdrop-filter: blur(18px);
}
.login-overlay.hidden { display:none; }
.login-card {
  width:min(460px, 100%); background: rgba(255,255,255,0.88); border:1px solid rgba(31,23,19,0.06); border-radius: 28px; padding: 28px; box-shadow: var(--shadow);
}
.login-eyebrow { color: var(--muted); font-size: 13px; letter-spacing: .16em; text-transform: uppercase; }
.login-card h2 { font-family: var(--serif); font-size: 38px; line-height: 1.04; margin: 12px 0; }
.login-card p { color: var(--muted); line-height: 1.7; }
.login-field { display:flex; flex-direction:column; gap:8px; margin-top: 16px; }
.login-field input {
  border-radius: 18px; border: 1px solid rgba(31,23,19,0.1); background:#fcfaf7; padding: 14px 16px; font-size: 16px; outline:none;
}
.login-hint { margin-top: 14px; color: var(--muted); font-size: 13px; }
@media (max-width: 980px) {
  .page-shell { grid-template-columns: 1fr; }
  .history-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .workspace { padding: 22px; }
  .hero-block h1 { font-size: clamp(44px, 12vw, 74px); }
  .hero-copy { font-size: 18px; }
}