:root {
  --ink: #1d1c1a;
  --muted: #69635d;
  --paper: #f4f1ea;
  --surface: #fffdfa;
  --line: rgba(29, 28, 26, 0.14);
  --sage: #65705a;
  --wine: #793b4a;
  --brass: #a88755;
  --blue: #7f94a0;
  --shadow: 0 22px 60px rgba(29, 28, 26, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

.auth-screen {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(300px, 0.95fr) minmax(300px, 440px);
  gap: clamp(26px, 7vw, 86px);
  align-items: center;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0;
}

.auth-copy h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.4rem, 7vw, 6.6rem);
  font-weight: 500;
  line-height: 0.96;
}

.auth-copy p:not(.eyebrow) {
  max-width: 460px;
  color: var(--muted);
}

.auth-panel,
.editor-pane,
.list-pane,
.hero-preview {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.auth-panel {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.manager-shell {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 236px 1fr;
}

.side-rail {
  position: sticky;
  top: 0;
  height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 22px;
  padding: 22px;
  background: var(--ink);
  color: var(--surface);
}

.studio-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  width: fit-content;
  font-weight: 800;
}

.studio-logo small {
  opacity: 0.68;
}

.rail-nav {
  display: grid;
  align-content: start;
  gap: 8px;
}

.rail-nav button,
.bottom-tabs button {
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: inherit;
}

.rail-nav button {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  padding: 10px;
  text-align: left;
}

.rail-nav button[aria-selected="true"] {
  background: rgba(255, 253, 250, 0.12);
}

.nav-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 253, 250, 0.2);
  border-radius: 50%;
}

.workspace {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 22px clamp(18px, 3vw, 34px) 42px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar h2,
.pane-heading h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  line-height: 1.08;
}

.topbar h2 {
  font-size: clamp(2.1rem, 4vw, 4.2rem);
}

.pane-heading h3 {
  font-size: 1.55rem;
}

.topbar-actions,
.action-row,
.pane-heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pane-heading {
  justify-content: space-between;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brass);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.primary-action,
.ghost-action,
.danger-action,
.text-action {
  min-height: 42px;
  border-radius: var(--radius);
  padding: 9px 14px;
}

.primary-action {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--surface);
}

.primary-action.compact,
.ghost-action {
  min-height: 38px;
}

.ghost-action {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.danger-action {
  border: 1px solid var(--wine);
  background: var(--wine);
  color: var(--surface);
}

.text-action {
  border: 1px solid rgba(255, 253, 250, 0.2);
  background: transparent;
  color: var(--surface);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  min-height: 128px;
  display: grid;
  align-content: space-between;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px;
}

.metric-card span {
  color: var(--muted);
}

.metric-card strong {
  font-size: clamp(2.4rem, 5vw, 4.3rem);
  line-height: 1;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

.hero-preview {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: end;
  overflow: hidden;
  margin-top: 14px;
  color: var(--surface);
}

.hero-preview img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-preview::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(0deg, rgba(29, 28, 26, 0.68), rgba(29, 28, 26, 0.08));
}

.hero-preview div {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 24px;
}

.hero-preview h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  font-weight: 500;
}

.split-view {
  display: grid;
  grid-template-columns: minmax(310px, 0.84fr) minmax(420px, 1.16fr);
  gap: 16px;
}

.list-pane,
.editor-pane {
  min-width: 0;
  padding: 18px;
}

.editor-pane.wide {
  max-width: 980px;
}

.search-line {
  margin-bottom: 12px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  padding: 11px 12px;
}

textarea {
  resize: vertical;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.switch {
  display: inline-flex;
  grid-auto-flow: column;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 8px;
  color: var(--ink);
}

.switch input {
  width: auto;
}

.product-list,
.member-list {
  display: grid;
  gap: 10px;
}

.product-item,
.member-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.product-item {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  padding: 10px;
}

.product-item[aria-current="true"] {
  outline: 2px solid var(--brass);
}

.product-item img {
  width: 76px;
  height: 92px;
  border-radius: 6px;
  object-fit: cover;
  background: #e8e6df;
}

.product-item h4,
.product-item p {
  margin: 0;
}

.product-item p,
.member-item p,
.form-status {
  color: var(--muted);
}

.product-item button {
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  padding: 7px 10px;
}

.image-preview-strip {
  min-height: 82px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.image-preview-strip img {
  flex: 0 0 72px;
  width: 72px;
  height: 72px;
  border-radius: 6px;
  object-fit: cover;
  background: #e8e6df;
}

.content-preview img {
  width: 100%;
  max-height: 260px;
  border-radius: var(--radius);
  object-fit: cover;
  background: #e8e6df;
}

.member-item {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1fr) minmax(110px, 0.8fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
}

.member-item strong,
.member-item span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.member-item button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--wine);
  padding: 7px 10px;
}

.bottom-tabs {
  display: none;
}

@media (max-width: 980px) {
  .manager-shell {
    grid-template-columns: 1fr;
  }

  .side-rail {
    display: none;
  }

  .workspace {
    padding-bottom: 92px;
  }

  .split-view,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .bottom-tabs {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 30;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    padding: 6px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 253, 250, 0.92);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
  }

  .bottom-tabs button {
    min-height: 42px;
    color: var(--muted);
  }

  .bottom-tabs button[aria-selected="true"] {
    background: var(--ink);
    color: var(--surface);
  }
}

@media (max-width: 680px) {
  .auth-screen {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .topbar-actions,
  .action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .hero-preview {
    min-height: 300px;
  }

  .member-item {
    grid-template-columns: 1fr;
  }
}