:root {
  color-scheme: light dark;
  --bg: #edf1ee;
  --text: #16201c;
  --muted: #65706b;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: #ffffff;
  --line: rgba(25, 41, 35, 0.14);
  --accent: #326d82;
  --accent-2: #b95c6d;
  --good: #267257;
  --warn: #9b6b1f;
  --shadow: 0 18px 48px rgba(24, 39, 34, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111612;
    --text: #f1f4ed;
    --muted: #a5b0a8;
    --panel: rgba(25, 31, 26, 0.88);
    --panel-strong: #1a211c;
    --line: rgba(224, 235, 219, 0.14);
    --accent: #58a6a6;
    --accent-2: #d27c8d;
    --good: #7dd7ac;
    --warn: #e4b166;
    --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  }
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #edf1ee;
  --text: #16201c;
  --muted: #65706b;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: #ffffff;
  --line: rgba(25, 41, 35, 0.14);
}

body[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111612;
  --text: #f1f4ed;
  --muted: #a5b0a8;
  --panel: rgba(25, 31, 26, 0.88);
  --panel-strong: #1a211c;
  --line: rgba(224, 235, 219, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--bg), var(--accent) 10%), var(--bg) 42%, color-mix(in srgb, var(--bg), var(--accent-2) 9%)),
    repeating-linear-gradient(90deg, transparent 0 34px, color-mix(in srgb, var(--line), transparent 80%) 34px 35px);
}

button, input, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1040px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 20px 14px calc(92px + env(safe-area-inset-bottom));
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 2px 16px;
  backdrop-filter: blur(18px);
}

.brand h1,
.brand p {
  margin: 0;
}

.brand h1 {
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: 0;
}

.brand p {
  max-width: 680px;
  color: var(--muted);
  line-height: 1.45;
}

.shell-chip {
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--panel);
  white-space: nowrap;
}

.grid {
  display: grid;
  gap: 14px;
}

.section-title {
  margin: 22px 0 10px;
  font-size: 22px;
}

.panel, .accordion, .feed-card, .metric-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.panel {
  padding: 16px;
}

.accordion summary {
  list-style: none;
  display: grid;
  gap: 5px;
  padding: 16px;
}

.accordion summary::-webkit-details-marker { display: none; }

.accordion-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
}

.descriptor {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.accordion-body {
  padding: 0 16px 16px;
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  font-weight: 700;
  font-size: 13px;
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--text);
  background: color-mix(in srgb, var(--panel-strong), transparent 10%);
}

textarea {
  min-height: 136px;
  resize: vertical;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.btn {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  background: var(--panel-strong);
  font-weight: 800;
}

.btn.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-2), var(--accent) 35%));
  color: #fff;
}

.btn.ghost {
  color: var(--muted);
  background: transparent;
}

.notice {
  margin: 10px 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: var(--panel);
}

.tabbar {
  position: fixed;
  left: max(8px, env(safe-area-inset-left));
  right: max(8px, env(safe-area-inset-right));
  bottom: max(8px, env(safe-area-inset-bottom));
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  width: min(760px, calc(100% - 16px));
  margin: 0 auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel-strong), transparent 6%);
  box-shadow: var(--shadow);
}

.tabbar button {
  min-width: 0;
  border: 0;
  border-radius: 8px;
  padding: 9px 4px;
  color: var(--muted);
  background: transparent;
  font-weight: 800;
  font-size: 12px;
}

.tabbar button.active {
  color: var(--text);
  background: color-mix(in srgb, var(--accent), transparent 82%);
}

.feed-card {
  padding: 14px;
}

.feed-card h3,
.feed-card p {
  margin: 0;
}

.feed-card p {
  color: var(--muted);
  line-height: 1.45;
  white-space: pre-wrap;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.metric-card {
  padding: 14px;
}

.metric-card b {
  display: block;
  margin-bottom: 6px;
}

.metric-value {
  font-size: 22px;
  font-weight: 900;
}

.quality-ring {
  width: min(280px, 70vw);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 12px auto;
  background:
    conic-gradient(var(--accent) calc(var(--score, 0) * 1%), color-mix(in srgb, var(--panel-strong), var(--line) 30%) 0);
}

.quality-inner {
  width: 72%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  background: var(--panel-strong);
}

.quality-inner strong {
  display: block;
  font-size: 42px;
}

.hidden {
  display: none !important;
}

.loading-screen {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
}

.brand-mark {
  font-size: 42px;
  color: var(--text);
  font-weight: 900;
}

@media (max-width: 520px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
  .tabbar button {
    font-size: 11px;
  }
}