:root {
  --bg: #10140f;
  --bg-2: #181e16;
  --ink: #e8efe0;
  --muted: #8a9a7c;
  --line: rgba(232, 239, 224, 0.12);
  --accent: #c8f031;
  --accent-2: #6fd3c2;
  --warn: #ffb454;
  --err: #ff6b6b;
  --panel: rgba(24, 30, 22, 0.88);
  --radius: 14px;
  --font-display: "Bricolage Grotesque", "Noto Sans TC", sans-serif;
  --font-body: "Noto Sans TC", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(200, 240, 49, 0.16), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(111, 211, 194, 0.14), transparent 50%),
    linear-gradient(160deg, #0c100b 0%, var(--bg) 45%, #151b13 100%);
  line-height: 1.5;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  z-index: 0;
}

.top,
main,
footer {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1.25rem 1.5rem 0;
  max-width: 1080px;
  margin: 0 auto;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  letter-spacing: -0.03em;
  animation: brand-in 0.7s ease;
}

.tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.hero h1 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  max-width: 12ch;
  animation: rise 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero h1 span {
  color: var(--accent);
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34rem;
  animation: rise 0.75s cubic-bezier(0.16, 1, 0.3, 1) 0.08s;
}

.search {
  display: grid;
  gap: 1rem;
  animation: rise 0.75s cubic-bezier(0.16, 1, 0.3, 1) 0.14s;
}

.fields {
  display: grid;
  grid-template-columns: 1.2fr 1.2fr 0.7fr;
  gap: 0.75rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.85rem 0.95rem;
  font: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus,
.field select:focus {
  border-color: rgba(200, 240, 49, 0.55);
  box-shadow: 0 0 0 3px rgba(200, 240, 49, 0.12);
}

.sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.9rem;
  cursor: pointer;
  user-select: none;
}

.chip input {
  accent-color: var(--accent);
}

.chip.muted {
  opacity: 0.45;
  cursor: not-allowed;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

button[type="submit"] {
  border: 0;
  background: var(--accent);
  color: #10140f;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

button[type="submit"]:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button[type="submit"]:disabled {
  opacity: 0.65;
  cursor: wait;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.hint code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-2);
}

.status {
  margin-top: 1.75rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.status.loading::after {
  content: "";
  display: inline-block;
  width: 0.7em;
  overflow: hidden;
  animation: dots 1.2s steps(4, end) infinite;
}

.status.error {
  color: var(--err);
}

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.stat {
  padding: 1rem 1.1rem;
  border-top: 2px solid var(--accent);
  background: linear-gradient(180deg, rgba(200, 240, 49, 0.08), transparent 70%);
  animation: rise 0.5s ease;
}

.stat.featured {
  border-top-color: var(--accent-2);
  background: linear-gradient(180deg, rgba(111, 211, 194, 0.14), transparent 70%);
}

.stat .label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat .value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.45rem;
  margin-top: 0.25rem;
}

.stat .value.fx {
  font-size: 1rem;
  margin-top: 0.45rem;
}

.table td.price .orig {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 400;
  margin-top: 0.15rem;
}

.results {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.source-block {
  animation: rise 0.55s ease;
}

.source-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.75rem;
}

.source-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.source-meta {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.source-meta.warn {
  color: var(--warn);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  text-align: left;
  padding: 0.7rem 0.35rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.table th {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.table td.price {
  font-family: var(--font-mono);
  font-weight: 500;
  white-space: nowrap;
}

.table a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.table a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.muted-cell {
  color: var(--muted);
}

footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer a {
  color: var(--accent-2);
}

.trend {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.trend-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.trend-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: -0.03em;
}

.trend-lede {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 36rem;
}

.field.days {
  min-width: 7rem;
}

.trend-picks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  min-height: 2rem;
}

.trend-picks .chip {
  max-width: 100%;
}

.trend-picks .chip span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 14rem;
}

.chart-wrap {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1rem 0.5rem;
  min-height: 320px;
}

.chart-wrap canvas {
  width: 100% !important;
  max-height: 360px;
}

.trend-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  pointer-events: none;
}

.trend-empty.hidden {
  display: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes brand-in {
  from {
    opacity: 0;
    letter-spacing: 0.12em;
  }
  to {
    opacity: 1;
    letter-spacing: -0.03em;
  }
}

@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}

@media (max-width: 800px) {
  .fields {
    grid-template-columns: 1fr;
  }

  .top {
    flex-direction: column;
    gap: 0.25rem;
  }

  .table th:nth-child(3),
  .table td:nth-child(3),
  .table th:nth-child(4),
  .table td:nth-child(4) {
    display: none;
  }
}