:root {
  color-scheme: dark;
  --bg: #0f1720;
  --surface: #13212b;
  --surface-2: #182b36;
  --surface-3: #0a1118;
  --text: #f3f7f8;
  --muted: #9cacb4;
  --line: rgba(255, 255, 255, .12);
  --green: #36d68c;
  --red: #ff6577;
  --yellow: #ffd166;
  --blue: #6db9ff;
  --cyan: #5eead4;
  --ink: #071018;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  background: linear-gradient(180deg, #12303a 0, var(--bg) 210px);
  color: var(--text);
}

button, input, select { font: inherit; }
button, .file-button { touch-action: manipulation; }
button:disabled { opacity: .55; }
h1, h2, p { margin: 0; }
h1 { font-size: 27px; line-height: 1.08; letter-spacing: 0; }
h2 { font-size: 17px; line-height: 1.25; letter-spacing: 0; }

.app-shell {
  width: min(100%, 540px);
  margin: 0 auto;
  padding: max(16px, env(safe-area-inset-top)) 12px max(28px, env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.eyebrow, .section-kicker {
  margin: 0 0 4px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
}

.icon-button, button, .file-button {
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: var(--ink);
  font-weight: 800;
  min-height: 44px;
  padding: 0 14px;
}

.icon-button {
  width: 44px;
  padding: 0;
  font-size: 24px;
}

.hero-panel, .panel, .status-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .18);
}

.hero-panel {
  background: linear-gradient(180deg, rgba(30, 55, 67, .98), rgba(18, 33, 43, .98));
  padding: 14px;
  margin-bottom: 10px;
}

.panel {
  background: rgba(19, 33, 43, .96);
  padding: 14px;
  margin: 10px 0;
}

.section-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.section-title.compact { align-items: center; }
.section-title > span, .status-pill {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.status-pill {
  border: 1px solid rgba(94, 234, 212, .35);
  border-radius: 999px;
  padding: 5px 8px;
  color: var(--cyan);
}

.signal-card {
  border-radius: 8px;
  padding: 14px;
  border: 1px solid rgba(255, 209, 102, .38);
  background: rgba(10, 17, 24, .72);
}
.signal-card.long { border-color: rgba(54, 214, 140, .62); }
.signal-card.short { border-color: rgba(255, 101, 119, .66); }
.signal-card.neutral { border-color: rgba(255, 209, 102, .42); }
.signal-head span, .signal-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.signal-card strong {
  display: block;
  margin: 5px 0 8px;
  font-size: 22px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}
.signal-card p, .hint, .risk-note {
  color: var(--muted);
  line-height: 1.5;
  font-size: 12px;
}
.risk-note { margin-top: 10px; }

.primary-actions, .button-row, .cloud-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.primary-actions { margin-top: 12px; }
.primary-button { background: var(--green); }
.accent-button, .wide-button { background: var(--yellow); }
.wide-button { width: 100%; }
.cloud-actions { margin-top: 8px; }
.cloud-actions button { background: var(--surface-2); color: var(--text); border: 1px solid var(--line); }
.secondary-row { margin-top: 8px; }

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.status-grid article {
  background: rgba(10, 17, 24, .72);
  padding: 12px;
}
.status-grid span, .metric-list span, label {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.status-grid strong {
  display: block;
  margin-top: 6px;
  font-size: 21px;
  line-height: 1.1;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.market-picker { margin-bottom: 10px; }
label input, label select {
  width: 100%;
  min-height: 42px;
  margin-top: 6px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface-3);
  color: var(--text);
  padding: 0 10px;
}
.file-button {
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.advanced-box {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: rgba(10, 17, 24, .45);
}
.advanced-box summary {
  cursor: pointer;
  color: var(--blue);
  font-weight: 800;
  min-height: 28px;
}

.text-button {
  min-height: 32px;
  padding: 0;
  background: transparent;
  color: var(--blue);
}
.metric-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.metric-list div {
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}
.metric-list strong {
  display: block;
  margin-top: 6px;
  font-size: 17px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.trade-log, .feedback-log, .leaderboard {
  display: grid;
  gap: 8px;
  max-height: 420px;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}
.feedback-log {
  margin-top: 10px;
  max-height: 210px;
}
.feedback-item, .rank-item, .trade-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-3);
}
.feedback-item {
  padding: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}
.rank-item {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 10px;
  align-items: start;
  padding: 10px;
}
.rank-no {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(109, 185, 255, .14);
  color: var(--blue);
  font-weight: 900;
  font-size: 13px;
}
.rank-main strong {
  display: block;
  font-size: 14px;
  line-height: 1.25;
}
.rank-main span, .rank-side span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  margin-top: 2px;
}
.rank-side {
  text-align: right;
  min-width: 54px;
}
.rank-side strong {
  display: block;
  color: var(--green);
  font-size: 20px;
  line-height: 1.1;
}
.trade-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px;
}
.trade-item strong { font-size: 14px; }
.trade-item span, .trade-item small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}
.trade-item .profit { color: var(--green); }
.trade-item .loss { color: var(--red); }
.empty { color: var(--muted); font-size: 13px; }

@media (max-width: 380px) {
  .app-shell { padding-left: 10px; padding-right: 10px; }
  .form-grid, .metric-list { grid-template-columns: 1fr; }
  h1 { font-size: 24px; }
  h2 { font-size: 16px; }
  .rank-item { grid-template-columns: 30px 1fr; }
  .rank-side { grid-column: 2; text-align: left; }
  .rank-side strong { font-size: 18px; }
}