:root {
  color-scheme: dark;
  --bg: #07110f;
  --surface: #0c1916;
  --surface-2: #10221d;
  --line: #1b352e;
  --text: #e9f5ef;
  --muted: #91aaa0;
  --accent: #69e6ac;
  --accent-deep: #1cad75;
  --call: #4bd1a0;
  --put: #f06f6b;
  --warning: #f1c76c;
  --shadow: 0 24px 70px rgb(0 0 0 / 28%);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgb(38 105 78 / 20%), transparent 35%),
    radial-gradient(circle at 90% 20%, rgb(41 93 83 / 14%), transparent 28%),
    var(--bg);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgb(105 230 172 / 10%);
  background: rgb(7 17 15 / 88%);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgb(105 230 172 / 35%);
  border-radius: 12px;
  color: var(--accent);
  background: rgb(105 230 172 / 8%);
  font-family: Georgia, serif;
  font-size: 25px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  letter-spacing: 0.02em;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.shell {
  width: min(1480px, calc(100% - 32px));
  min-height: calc(100vh - 150px);
  margin: 0 auto;
  padding: 52px 0 72px;
}

.auth-layout {
  display: grid;
  min-height: 62vh;
  place-items: center;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(145deg, rgb(16 34 29 / 96%), rgb(10 24 20 / 96%));
  box-shadow: var(--shadow);
}

.auth-card {
  width: min(620px, 100%);
  padding: clamp(28px, 6vw, 58px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 16px;
  font-size: clamp(32px, 5vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 18px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.lede {
  max-width: 760px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.stack {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input,
select {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid #26473d;
  border-radius: 11px;
  outline: none;
  color: var(--text);
  background: #081411;
  text-transform: none;
}

input:focus,
select:focus {
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 3px rgb(105 230 172 / 12%);
}

.button {
  min-height: 44px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-weight: 800;
}

.button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.button-primary {
  color: #032318;
  background: var(--accent);
}

.button-primary:hover:not(:disabled) {
  background: #8aefc1;
}

.button-quiet {
  color: var(--muted);
  border-color: var(--line);
  background: transparent;
}

.button-danger {
  color: #ffc4c1;
  border-color: rgb(240 111 107 / 40%);
  background: rgb(240 111 107 / 8%);
}

.form-error {
  min-height: 1.4em;
  margin: 14px 0 0;
  color: #ff9d98;
  font-size: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 10px;
  border: 1px solid;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-neutral {
  color: var(--muted);
  border-color: var(--line);
}

.badge-good {
  color: var(--accent);
  border-color: rgb(105 230 172 / 35%);
  background: rgb(105 230 172 / 7%);
}

.badge-warn {
  color: var(--warning);
  border-color: rgb(241 199 108 / 35%);
  background: rgb(241 199 108 / 7%);
}

.notice {
  margin-bottom: 24px;
  padding: 14px 16px;
  border: 1px solid rgb(105 230 172 / 28%);
  border-radius: 12px;
  color: #bdf4da;
  background: rgb(105 230 172 / 7%);
}

.notice.error {
  color: #ffc4c1;
  border-color: rgb(240 111 107 / 35%);
  background: rgb(240 111 107 / 8%);
}

.hero-row,
.panel-heading {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  justify-content: space-between;
}

.hero-row {
  margin-bottom: 28px;
}

.hero-row h1 {
  margin-bottom: 12px;
}

.control-grid {
  display: grid;
  grid-template-columns: minmax(130px, 0.8fr) repeat(2, minmax(170px, 1fr)) minmax(130px, 0.7fr) auto;
  gap: 15px;
  align-items: end;
  padding: 20px;
}

.source-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 26px 0 14px;
  color: var(--muted);
  font-size: 13px;
}

.source-strip strong {
  color: var(--text);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.metric-card {
  min-height: 128px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgb(12 25 22 / 90%);
}

.metric-label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.metric-value {
  display: block;
  margin-top: 13px;
  font-size: clamp(22px, 2vw, 31px);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.035em;
}

.metric-detail {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(310px, 0.8fr);
  gap: 12px;
}

.chart-panel,
.side-stack .panel,
.methodology {
  padding: 22px;
}

.side-stack {
  display: grid;
  gap: 12px;
}

.legend {
  display: flex;
  gap: 14px;
  color: var(--muted);
  font-size: 12px;
}

.legend span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
}

.legend-call {
  background: var(--call);
}

.legend-put {
  background: var(--put);
}

.exposure-chart {
  max-height: 720px;
  overflow: auto;
  padding: 6px 6px 6px 0;
}

.chart-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 70px minmax(0, 1fr);
  min-height: 27px;
  align-items: center;
}

.bar-side {
  display: flex;
  align-items: center;
}

.bar-side.left {
  justify-content: flex-end;
}

.bar {
  min-width: 1px;
  height: 12px;
  border-radius: 4px;
  opacity: 0.86;
}

.bar.call {
  background: linear-gradient(90deg, #1a8a66, var(--call));
}

.bar.put {
  background: linear-gradient(90deg, var(--put), #a84442);
}

.strike-label {
  color: #cfe0d8;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.chart-row.spot-near .strike-label {
  color: var(--warning);
  font-weight: 900;
}

.wall-card {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.wall-card:first-child {
  padding-top: 0;
  border-top: 0;
}

.wall-card-header {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

.wall-strike {
  display: block;
  margin: 7px 0 4px;
  font-size: 28px;
  font-weight: 750;
  letter-spacing: -0.03em;
}

.wall-detail,
.coverage-line {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.coverage-line {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}

.coverage-line:first-child {
  border-top: 0;
}

.coverage-warning {
  margin-top: 12px;
  color: var(--warning);
  font-size: 12px;
  line-height: 1.5;
}

.methodology {
  margin-top: 12px;
}

.methodology p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.loading-state {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 18px;
  padding: 18px 22px;
}

.loading-state p {
  margin: 0;
  color: var(--muted);
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgb(105 230 172 / 25%);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

footer {
  padding: 24px;
  border-top: 1px solid var(--line);
  color: #668177;
  font-size: 12px;
  text-align: center;
}

[hidden] {
  display: none !important;
}

@media (max-width: 1100px) {
  .control-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric-grid {
    grid-template-columns: repeat(3, minmax(150px, 1fr));
  }

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

@media (max-width: 680px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand small,
  .header-actions .button {
    display: none;
  }

  .shell {
    width: min(100% - 20px, 1480px);
    padding-top: 28px;
  }

  .hero-row,
  .panel-heading {
    display: block;
  }

  .hero-row .button {
    width: 100%;
  }

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

  .legend {
    margin-bottom: 12px;
  }

  .chart-row {
    grid-template-columns: minmax(0, 1fr) 54px minmax(0, 1fr);
  }
}