/* ========================================
   Horse Racing Prize Money Calculator
   ======================================== */

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-2: #242836;
  --border: #2e3345;
  --text: #e8eaed;
  --text-muted: #9aa0b0;
  --accent: #6c63ff;
  --accent-hover: #7b73ff;
  --green: #34d399;
  --yellow: #fbbf24;
  --orange: #fb923c;
  --red: #f87171;
  --blue: #60a5fa;
  --radius: 8px;
  --radius-lg: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Header ---- */

header {
  text-align: center;
  padding: 1.5rem 1rem 1rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

header .subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* ---- Main ---- */

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem;
}

section {
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

/* ---- Cards ---- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.card-description {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

/* ---- Form Elements ---- */

.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  font-size: 0.9rem;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239aa0b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  cursor: pointer;
}

select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

input[type="number"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  font-size: 0.9rem;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.input-row {
  display: flex;
  gap: 0.5rem;
}

.input-row select.currency-select {
  width: 130px;
  flex-shrink: 0;
}

.input-row input[type="number"] {
  flex: 1;
}

/* ---- Position Breakdown ---- */

.position-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.position-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.75rem;
  background: var(--surface-2);
  border-radius: var(--radius);
  border-left: 3px solid var(--border);
}

.position-row.first {
  border-left-color: var(--yellow);
}

.position-row.second {
  border-left-color: var(--text-muted);
}

.position-row.third {
  border-left-color: var(--orange);
}

.position-label {
  font-size: 0.9rem;
  font-weight: 600;
}

.position-pct {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.position-amount {
  font-size: 0.9rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ---- Winner Total ---- */

.winner-total {
  text-align: center;
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--surface-2);
  border-radius: var(--radius);
  border: 1px solid var(--accent);
}

.winner-total .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.winner-total .amount {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--yellow);
  margin-top: 0.25rem;
}

/* ---- Stakeholder Splits ---- */

.splits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.split-card {
  text-align: center;
  padding: 1rem 0.5rem;
  background: var(--surface-2);
  border-radius: var(--radius);
}

.split-card .role {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.split-card .pct {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.split-card .amount {
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ---- Custom Split Editor ---- */

.split-editor {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.split-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.split-row label {
  width: 60px;
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
}

.slider-group {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--surface-2);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
}

.pct-label {
  width: 40px;
  text-align: right;
  font-size: 0.9rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.split-warning {
  font-size: 0.85rem;
  min-height: 1.3em;
  text-align: center;
}

.split-warning.error {
  color: var(--red);
}

.split-warning.ok {
  color: var(--green);
}

/* ---- Comparison Table ---- */

.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

thead th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--surface-2);
}

tbody tr.active-row {
  background: rgba(108, 99, 255, 0.1);
}

td.race-name {
  font-weight: 600;
  white-space: nowrap;
}

td.amount {
  text-align: right;
  white-space: nowrap;
}

td.currency-col {
  text-align: center;
  color: var(--text-muted);
}

/* ---- Ad Container ---- */

.ad-container {
  margin: 1.25rem 0;
  min-height: 50px;
  text-align: center;
}

/* ---- SEO Content ---- */

.seo-content {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.seo-content h2 {
  color: var(--text);
}

.seo-content h3 {
  color: var(--text);
}

.seo-content p {
  margin-bottom: 0.75rem;
}

.seo-content ul {
  margin-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.seo-content li {
  margin-bottom: 0.35rem;
}

/* ---- Footer ---- */

footer {
  text-align: center;
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ---- Responsive ---- */

@media (max-width: 480px) {
  .splits-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .split-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding: 0.75rem 1rem;
  }

  .split-card .role {
    margin-bottom: 0;
  }

  .split-card .pct {
    margin-bottom: 0;
    margin-left: auto;
    margin-right: 1rem;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .winner-total .amount {
    font-size: 1.25rem;
  }

  table {
    font-size: 0.8rem;
  }

  thead th,
  tbody td {
    padding: 0.5rem;
  }
}

@media (max-width: 360px) {
  .input-row {
    flex-direction: column;
  }

  .input-row select.currency-select {
    width: 100%;
  }
}