:root {
  --bg: #e8eef2;
  --ink: #1c2430;
  --muted: #5a6675;
  --panel: #f7fafc;
  --line: #c5d0da;
  --accent: #0f6a5c;
  --accent-2: #b85c38;
  --warn: #8a4b00;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

/* Prevent display:grid/flex from overriding the hidden attribute */
[hidden] { display: none !important; }

html, body {
  height: 100%;
}
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d7e8e4 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #f0e2d6 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 32px;
}

.topbar { margin-bottom: 18px; flex-shrink: 0; }
.product-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--ink);
  font-size: clamp(1.45rem, 2.6vw, 1.9rem);
  line-height: 1.3;
}

/* —— 未登录：仅入口页 —— */
body:not(.is-logged-in) .page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
body:not(.is-logged-in) .entry {
  align-items: stretch;
}
body:not(.is-logged-in) .site-footer {
  margin-top: auto;
}

.entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 400px);
  gap: 22px;
  align-items: stretch;
  margin-bottom: 16px;
}
@media (max-width: 860px) {
  .entry { grid-template-columns: 1fr; }
}
.entry-intro {
  display: grid;
  grid-template-rows: auto auto;
  gap: 14px;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px;
}
.entry-visual {
  margin: 0;
  line-height: 0;
}
.entry-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(56vh, 520px);
  object-fit: contain;
  object-position: center top;
}
.entry-copy {
  display: grid;
  gap: 10px;
}
.entry-label {
  display: inline-block;
  margin-right: 8px;
  color: var(--accent);
  font-weight: 650;
  letter-spacing: 0.04em;
  font-size: 0.82rem;
}
.lede,
.entry-guide {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.95rem;
}
.entry-guide {
  font-size: 0.9rem;
}
.entry-side {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  min-height: 100%;
}

.gate {
  display: grid;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px 16px;
}
.gate label { display: grid; gap: 6px; font-size: 0.9rem; }
.gate input { padding: 10px 12px; border: 1px solid var(--line); background: #fff; font: inherit; }
.gate button { justify-self: start; }
.gate-msg {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.45;
  min-height: 1.2em;
}
.gate-msg.ok { color: var(--accent); }
.gate-msg.err { color: #b42318; }

.auth-panel.is-locked {
  opacity: 0.42;
  filter: grayscale(0.35);
  pointer-events: none;
  user-select: none;
}
.auth-panel.is-locked .auth-note {
  color: var(--muted);
}

/* —— 已登录：视口内工作台 —— */
body.is-logged-in {
  overflow: hidden;
}
body.is-logged-in .page {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-top: 16px;
  padding-bottom: 10px;
  overflow: hidden;
}
body.is-logged-in .topbar { margin-bottom: 10px; }
body.is-logged-in .product-title {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}
body.is-logged-in .site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-top: 8px;
  padding-top: 8px;
  flex-shrink: 0;
}
body.is-logged-in .footer-copy,
body.is-logged-in .footer-meta {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 500;
}

.studio {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: 14px;
  align-items: stretch;
}
@media (max-width: 860px) {
  body.is-logged-in { overflow: auto; }
  body.is-logged-in .page {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
  }
  .layout {
    grid-template-columns: 1fr;
    flex: none;
  }
  .panel {
    max-height: min(70vh, 640px);
  }
}

.panel, .canvas-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px 16px 20px;
  min-height: 0;
}
.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-bottom: 12px;
}
.panel-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
}
.panel-actions {
  flex-shrink: 0;
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}
.panel h2 {
  margin: 18px 0 10px;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.panel-scroll > h2:first-child { margin-top: 0; }

.canvas-panel {
  display: flex;
  flex-direction: column;
  overflow: auto;
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 0.86rem;
  color: var(--muted);
}
input, select, button {
  font: inherit;
  color: var(--ink);
}
input, select {
  padding: 9px 10px;
  border: 1px solid var(--line);
  background: #fff;
}
#themeSelect {
  width: 100%;
  min-height: 96px;
  max-height: 132px;
}

.file span {
  display: inline-block;
  padding: 10px 12px;
  border: 1px dashed var(--line);
  background: #fff;
  cursor: pointer;
}
.file input { display: none; }
.file-name { margin: 0 0 12px; font-size: 0.82rem; color: var(--muted); }

.actions { display: grid; gap: 8px; margin-top: 16px; }
.panel-actions.actions { margin-top: 0; }
button {
  border: 1px solid var(--line);
  background: #fff;
  padding: 11px 14px;
  cursor: pointer;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.accent { background: var(--accent-2); color: #fff; border-color: var(--accent-2); }

.status-row { margin-bottom: 12px; flex-shrink: 0; }
.progress {
  height: 8px;
  background: #d9e2ea;
  overflow: hidden;
  margin-bottom: 8px;
}
#progressBar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #2a9a86);
  transition: width 0.25s ease;
}
#statusText { margin: 0; font-size: 0.9rem; color: var(--muted); }

.preview-wrap {
  flex: 1;
  min-height: 220px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.7), rgba(255,255,255,0.35)),
    repeating-linear-gradient(0deg, transparent, transparent 19px, rgba(197,208,218,0.35) 20px);
  border: 1px solid var(--line);
}
#previewImage {
  max-width: 100%;
  max-height: min(520px, 55vh);
  display: block;
}
#previewPlaceholder { color: var(--muted); }

.log {
  margin: 12px 0 0;
  max-height: 140px;
  overflow: auto;
  padding: 12px;
  background: #121820;
  color: #d7e0ea;
  font-size: 0.78rem;
  line-height: 1.45;
  white-space: pre-wrap;
  flex-shrink: 0;
}
.download { margin: 12px 0 0; flex-shrink: 0; }
.download a { color: var(--accent); font-weight: 600; }

.auth-panel, .user-bar {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 14px 16px;
  margin-bottom: 16px;
}
.entry-side .auth-panel { margin-bottom: 0; }
.studio .user-bar {
  margin-bottom: 0;
  flex-shrink: 0;
}

.auth-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.auth-tabs .tab {
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 12px;
}
.auth-tabs .tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.auth-note, .hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}
.auth-note.err { color: #b42318; }
.user-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.user-bar p { margin: 0; }
.user-bar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.user-hint {
  margin: 0;
  max-width: min(360px, 52vw);
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.35;
  text-align: right;
}
.user-hint.warn { color: #9a6700; }
.user-hint.err { color: #b42318; }
.user-hint.ok { color: var(--accent); }
.badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  font-size: 0.78rem;
  border: 1px solid var(--line);
  background: #fff;
}
.badge.ok {
  border-color: var(--accent);
  color: var(--accent);
}
.cred-dialog {
  width: min(520px, calc(100vw - 32px));
  max-height: min(90vh, 720px);
  margin: auto;
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 18px 48px rgba(20, 28, 36, 0.18);
}
.cred-dialog::backdrop {
  background: rgba(20, 28, 36, 0.42);
}
.cred-dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.cred-dialog-head h2 {
  margin: 0;
  font-size: 1.05rem;
}
.cred-dialog-close {
  flex-shrink: 0;
}
.cred-dialog > .hint {
  margin: 0 0 12px;
}
.cred-dialog label {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 0.9rem;
}
.cred-dialog input {
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: #fff;
  font: inherit;
}
.cred-dialog .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.cred-status {
  margin: 10px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.45;
}
.cred-status.ok { color: var(--accent); }
.cred-status.err { color: var(--accent-2); }

.site-footer {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}
.footer-copy {
  margin: 0 0 4px;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.82rem;
}
.footer-meta { margin: 0; opacity: 0.85; }