:root {
  --bg: #faf6f0;
  --panel: #ffffff;
  --panel-inset: #f6efe4;
  --border: #ecdfd0;
  --text: #2c2a45;
  --muted: #948b7c;
  --accent: #ec8b7f;
  --accent-dark: #d96f63;
  --navy: #454f8f;
  --green: #1f9d67;
  --red: #d6524a;
  --shadow: 0 2px 10px rgba(72, 55, 40, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

header .brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: var(--text);
}

header .brand img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  object-fit: cover;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 24px;
  font-size: 14px;
}

nav a:hover, nav a.active {
  color: var(--accent-dark);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px;
}

.hero {
  text-align: center;
  padding: 0 0 56px;
}

.hero h1 {
  font-size: 40px;
  margin-bottom: 12px;
  color: var(--navy);
}

.hero p {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 28px;
}

/* Full-bleed background image: breaks out of the centered `main` column
   to span the full viewport width, regardless of where it sits in the page. */
.hero-bg {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  margin-bottom: 40px;
  min-height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('rocket-hero.png');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
}

.hero-content {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(6px);
  border-radius: 20px;
  padding: 32px 40px;
  box-shadow: 0 10px 30px rgba(72, 55, 40, 0.12);
  max-width: 560px;
  margin: 24px;
}

.tagline {
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 6px 16px rgba(236, 139, 127, 0.35);
}

.btn:hover {
  background: var(--accent-dark);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel h2 {
  margin-top: 0;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.field input, .field select {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
}

.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
}

.result-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.result-row:last-child { border-bottom: none; }

.result-row .label { color: var(--muted); }

.result-row .value {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.price-big {
  text-align: center;
  padding: 20px 0 28px;
}

.price-big .amount {
  font-size: 40px;
  font-weight: 700;
}

.price-big .amount.call { color: var(--green); }
.price-big .amount.put { color: var(--red); }

.price-big .sub {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

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

/* ---- Wide layout for strategy builder ---- */
.wide {
  max-width: 1180px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 860px) {
  .row-2 { grid-template-columns: 1fr; }
}

/* ---- Sliders ---- */
.slider-field {
  margin-bottom: 18px;
}

.slider-field .slider-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.slider-field label {
  font-size: 13px;
  color: var(--muted);
}

.slider-field .slider-value {
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--navy);
}

.slider-field input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  margin: 8px 0;
}

.slider-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #ffffff;
  box-shadow: 0 1px 4px rgba(72, 55, 40, 0.3);
}

.slider-field input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #ffffff;
  box-shadow: 0 1px 4px rgba(72, 55, 40, 0.3);
}

/* ---- Strategy selector ---- */
.strategy-select-row {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.strategy-select-row select {
  flex: 1;
  min-width: 220px;
}

.btn-small {
  background: var(--panel-inset);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}

.btn-small:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.btn-small.danger:hover {
  border-color: var(--red);
  color: var(--red);
}

/* ---- Legs table ---- */
table.legs {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 8px;
}

table.legs th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

table.legs td {
  padding: 6px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

table.legs select, table.legs input {
  width: 100%;
  padding: 7px 8px;
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
}

table.legs .premium-cell {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

table.legs .remove-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
}

table.legs .remove-btn:hover {
  color: var(--red);
}

/* ---- Summary stat grid ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  margin-top: 4px;
}

.stat-box {
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.stat-box .stat-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.stat-box .stat-value {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--navy);
}

.stat-box .stat-value.positive { color: var(--green); }
.stat-box .stat-value.negative { color: var(--red); }

/* ---- Chart legend note ---- */
.chart-note {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
  flex-wrap: wrap;
}

.chart-note .dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 6px;
}