:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #f8faff;
  --line: #d9e1ee;
  --line-soft: #e7edf6;
  --text: #162235;
  --text-soft: #607088;
  --primary: #2563eb;
  --primary-soft: #ebf2ff;
  --warm: #ff8a57;
  --warm-soft: #fff3ec;
  --green: #179d68;
  --green-soft: #e8f8f1;
  --danger: #ce5c6f;
  --danger-soft: #fff1f4;
  --shadow: 0 18px 48px rgba(22, 34, 53, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-ui: "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-display: "Georgia", "Times New Roman", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-ui);
  color: var(--text);
  background: linear-gradient(180deg, #fafcff 0%, #f4f7fb 100%);
}
button, input, select, textarea { font: inherit; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--text);
  padding: 12px 14px;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(37, 99, 235, 0.36);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}
textarea { resize: vertical; }
.hidden { display: none !important; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card,
.app-header,
.top-nav,
.panel,
.modal-card,
.metric-card,
.account-card,
.announcement-card,
.timeline-item,
.stack-item {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow);
}

.auth-card {
  width: min(540px, 100%);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.eyebrow,
.panel-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.auth-card h1,
.app-header h1,
.panel h3,
.modal-card h3 {
  margin: 0;
  font-family: var(--font-display);
  color: var(--text);
}

.auth-card h1 {
  margin-top: 10px;
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.auth-copy,
.page-subtitle,
.small-meta,
.stack-item p,
.timeline-item .subtext {
  color: var(--text-soft);
  line-height: 1.7;
}

.auth-tabs,
.auth-footer,
.header-meta,
.top-nav,
.toolbar,
.button-row,
.field-grid,
.preset-row,
.inline-actions,
.account-meta {
  display: flex;
  gap: 10px;
}

.auth-tabs { margin-top: 22px; }
.auth-tab,
.nav-item,
.ghost-btn,
.primary-btn,
.preset-btn,
.mini-btn {
  border-radius: 999px;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: background 180ms ease, transform 180ms ease, border-color 180ms ease;
}
.auth-tab,
.nav-item,
.ghost-btn,
.preset-btn,
.mini-btn {
  background: #fff;
  color: var(--text);
}
.auth-tab,
.nav-item { padding: 10px 15px; }
.auth-tab.active,
.nav-item.active {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: rgba(37, 99, 235, 0.18);
}
.primary-btn {
  background: linear-gradient(135deg, #2563eb, #4f84f7);
  color: #fff;
  border-color: transparent;
  padding: 12px 16px;
  font-weight: 700;
}
.primary-btn.warm { background: linear-gradient(135deg, #ff8a57, #ffb05c); }
.ghost-btn,
.preset-btn,
.mini-btn { padding: 10px 14px; }
.small-btn { padding: 9px 12px; }
.small-primary { padding: 10px 14px; }
.preset-btn.muted { color: var(--text-soft); }
.auth-form { display: none; margin-top: 18px; gap: 16px; }
.auth-form.active,
.stack-form,
.stack-list,
.card-list,
.timeline-list { display: flex; flex-direction: column; }
.auth-form.active,
.stack-form { display: flex; }
.auth-footer { margin-top: 18px; justify-content: space-between; align-items: center; color: var(--text-soft); }
label { display: flex; flex-direction: column; gap: 8px; color: var(--text-soft); font-size: 13px; }

.app-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 20px;
}
.app-header {
  border-radius: var(--radius-xl);
  padding: 22px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.app-header h1 { margin-top: 8px; font-size: clamp(1.9rem, 3vw, 2.8rem); }
.header-meta { align-items: center; }
.status-chip,
.admin-chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
}
.admin-chip { border-radius: 18px; }
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--warm);
  box-shadow: 0 0 0 7px rgba(255, 138, 87, 0.14);
}
.top-nav {
  margin-top: 14px;
  padding: 10px;
  border-radius: var(--radius-xl);
  flex-wrap: wrap;
}
.view { display: none; margin-top: 16px; }
.view.active { display: block; }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.metric-card {
  border-radius: var(--radius-lg);
  padding: 18px;
}
.metric-card strong {
  display: block;
  margin-top: 10px;
  font-size: 1.8rem;
  font-family: var(--font-display);
}
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}
.panel {
  border-radius: var(--radius-xl);
  padding: 20px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.split-head { align-items: center; }
.panel h3 { margin-top: 6px; font-size: 1.45rem; }
.compact-toolbar { flex-wrap: wrap; justify-content: flex-end; }
.compact-input { min-width: 150px; }
.account-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.account-card,
.announcement-card,
.stack-item,
.timeline-item {
  border-radius: var(--radius-lg);
  padding: 16px;
}
.account-card header,
.announcement-card header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
}
.account-meta,
.inline-actions {
  flex-wrap: wrap;
}
.tag-pill,
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
.tag-pill { background: var(--panel-soft); color: var(--text-soft); }
.status-pill.active,
.status-pill.published { background: var(--green-soft); color: var(--green); }
.status-pill.expired { background: var(--danger-soft); color: var(--danger); }
.status-pill.disabled,
.status-pill.locked,
.status-pill.archived { background: var(--warm-soft); color: var(--warm); }
.status-pill.grace { background: var(--primary-soft); color: var(--primary); }
.status-pill.draft { background: var(--panel-soft); color: var(--text-soft); }
.mini-btn.alt { background: var(--primary-soft); color: var(--primary); border-color: rgba(37, 99, 235, 0.16); }
.mini-btn.warn { background: var(--danger-soft); color: var(--danger); border-color: rgba(206, 92, 111, 0.18); }
.table-shell { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th,
.data-table td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.data-table th { color: var(--text-soft); font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; }
.modal-shell {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 40;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(22, 34, 53, 0.26);
  backdrop-filter: blur(4px);
}
.modal-card {
  position: relative;
  z-index: 1;
  width: min(620px, calc(100vw - 28px));
  max-height: calc(100vh - 32px);
  overflow: auto;
  border-radius: var(--radius-xl);
  padding: 20px;
}
.modal-head { margin-bottom: 14px; }
.modal-form { gap: 14px; }
.field-grid.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.expiry-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--panel-soft);
}
.preset-row { flex-wrap: wrap; }
.checkbox-line {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  background: #fff;
}
.checkbox-line input { width: auto; }
.end-row { justify-content: flex-end; }
.toast-shell {
  position: fixed;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 60;
}
.toast {
  min-width: 220px;
  max-width: 320px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.toast.error { border-color: rgba(206, 92, 111, 0.24); }
.reveal { opacity: 0; transform: translateY(10px); animation: rise .42s ease forwards; }
.delay-1 { animation-delay: .08s; }
.delay-2 { animation-delay: .14s; }
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

@media (max-width: 1180px) {
  .metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .account-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .app-header { flex-direction: column; align-items: flex-start; }
  .header-meta { flex-wrap: wrap; }
  .dashboard-grid,
  .field-grid.two,
  .metric-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .app-shell,
  .auth-shell { padding: 14px; }
  .header-meta,
  .compact-toolbar,
  .top-nav,
  .auth-tabs,
  .auth-footer,
  .button-row,
  .preset-row { flex-direction: column; align-items: stretch; }
}