/* Bitcoin Loans — Stylesheet */
/* Mirrors the Dutch lenen.css design system exactly */

:root {
  --bg: #FAFAF7;
  --bg-warm: #F5F3EE;
  --card: #FFFFFF;
  --text: #1C1917;
  --text-secondary: #57534E;
  --muted: #A8A29E;
  --accent: #E8740C;
  --accent-hover: #D16A0B;
  --accent-soft: rgba(232, 116, 12, 0.08);
  --accent-softer: rgba(232, 116, 12, 0.04);
  --green: #15803D;
  --green-soft: rgba(21, 128, 61, 0.08);
  --green-text: #166534;
  --red: #B91C1C;
  --red-soft: rgba(185, 28, 28, 0.06);
  --amber: #B45309;
  --amber-soft: rgba(180, 83, 9, 0.08);
  --amber-border: #FDE68A;
  --border: #E7E5E4;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --radius: 16px;
  --radius-sm: 10px;
}

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

body {
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 32px;
  background: rgba(250, 250, 247, 0.88);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.logo-mark {
  width: 32px; height: 32px; background: var(--accent); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 16px;
}
.logo-text { font-family: 'Source Serif 4', Georgia, serif; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }
.nav-right { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--muted); }
.btc-price {
  display: flex; align-items: center; gap: 6px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-secondary);
  background: var(--bg-warm); padding: 5px 12px; border-radius: 100px; border: 1px solid var(--border);
}
.btc-price .dot { width: 6px; height: 6px; background: var(--green); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* === LAYOUT === */
.page { max-width: 860px; margin: 0 auto; padding: 0 24px; }

/* === HERO === */
.hero { text-align: center; padding: 52px 0 36px; }
.hero h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 42px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; margin-bottom: 10px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p { font-size: 17px; color: var(--text-secondary); max-width: 480px; margin: 0 auto; }
.disclaimer {
  display: inline-block; font-size: 11px; color: var(--muted);
  background: var(--bg-warm); border: 1px solid var(--border);
  padding: 3px 12px; border-radius: 100px; margin-top: 14px;
}

/* === INPUT BAR === */
.input-bar {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 28px; box-shadow: var(--shadow-md); margin-bottom: 40px;
}
.input-main {
  display: flex; align-items: flex-end; gap: 16px;
}
.input-primary { flex: 1; }
.input-arrow {
  font-size: 20px; color: var(--muted); padding-bottom: 8px;
  font-family: 'JetBrains Mono', monospace;
}
.input-result { flex: 1; }
.result-value {
  height: 40px; display: flex; align-items: center; padding: 0 12px;
  background: var(--accent-soft); border: 1px solid rgba(232, 116, 12, 0.15);
  border-radius: 8px; font-family: 'JetBrains Mono', monospace;
  font-size: 16px; font-weight: 600; color: var(--accent);
}
.input-group { flex: 1; min-width: 120px; }
.input-group label {
  display: block; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 5px;
}
.input-group input, .input-group select {
  width: 100%; height: 40px; padding: 0 12px;
  border: 1px solid var(--border); border-radius: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 14px; font-weight: 500;
  color: var(--text); background: var(--bg); outline: none; transition: border-color 0.15s;
}
.input-group input:focus, .input-group select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232, 116, 12, 0.08);
}
.input-prefix {
  display: flex; align-items: center; height: 40px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--bg);
  overflow: hidden; transition: border-color 0.15s;
}
.input-prefix:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232, 116, 12, 0.08); }
.input-prefix span {
  padding: 8px 0 8px 12px; font-family: 'JetBrains Mono', monospace;
  font-size: 14px; color: var(--muted); user-select: none;
}
.input-prefix input {
  border: none; background: transparent; padding-left: 4px; flex: 1; min-width: 0; height: 100%;
}
.input-prefix input:focus { border-color: transparent; box-shadow: none; }

/* Advanced toggle */
.advanced-toggle {
  display: flex; align-items: center; gap: 6px;
  margin-top: 16px; padding: 0; border: none; background: none;
  font-family: inherit; font-size: 12px; font-weight: 600;
  color: var(--muted); cursor: pointer; transition: color 0.15s;
}
.advanced-toggle:hover { color: var(--text-secondary); }
.advanced-toggle svg { transition: transform 0.2s; }
.advanced-toggle.open svg { transform: rotate(180deg); }

/* Advanced settings panel */
.advanced-settings {
  display: none; gap: 12px; margin-top: 16px;
  padding-top: 16px; border-top: 1px solid var(--border);
}
.advanced-settings.open { display: flex; }

/* === STEPS === */
.step {
  display: flex; align-items: center; gap: 14px;
  margin: 48px 0 8px;
}
.step-number {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--text); color: var(--card);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; flex-shrink: 0;
}
.step h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 24px; font-weight: 700; letter-spacing: -0.02em;
}
.step-subtitle {
  font-size: 15px; color: var(--text-secondary);
  margin: 4px 0 20px 50px;
}

/* === RESULT CARDS === */
.result-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 28px; box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  animation: fadeUp 0.4s ease both;
}
.result-card:hover { border-color: #D6D3D1; box-shadow: var(--shadow-md); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* === THERMOMETER === */
.thermometer { display: flex; flex-direction: column; gap: 0; margin: 8px 0; }
.thermo-row {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 0; border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.thermo-row:last-child { border-bottom: none; }
.thermo-label { flex: 1; color: var(--text-secondary); }
.thermo-price { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 15px; }
.thermo-badge {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 3px 10px; border-radius: 100px;
}
.badge-safe { background: var(--green-soft); color: var(--green-text); }
.badge-warning { background: var(--amber-soft); color: var(--amber); }
.badge-danger { background: var(--red-soft); color: var(--red); }
.badge-neutral { background: var(--bg-warm); color: var(--text-secondary); }

.thermo-row.current .thermo-price { color: var(--text); font-size: 18px; }
.thermo-row.floor .thermo-price { color: var(--green); }
.thermo-row.margin-call .thermo-price { color: var(--amber); }
.thermo-row.liquidation .thermo-price { color: var(--red); }

.thermo-verdict {
  margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm);
  font-size: 14px; line-height: 1.5;
}
.thermo-verdict.safe { background: var(--green-soft); color: var(--green-text); }
.thermo-verdict.danger { background: var(--red-soft); color: var(--red); }
.thermo-verdict strong { font-weight: 700; }

/* === COMPARISON GRID (Step 2) === */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
}
.compare-card-title {
  font-size: 13px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; margin-bottom: 16px;
}
.compare-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px;
}
.compare-row:last-child { border-bottom: none; }
.compare-label { color: var(--text-secondary); }
.compare-value { font-family: 'JetBrains Mono', monospace; font-weight: 500; }

.verdict-box {
  margin-top: 16px; padding: 20px; border-radius: var(--radius-sm);
  text-align: center;
}
.verdict-box.borrow { background: var(--green-soft); border: 1px solid rgba(21, 128, 61, 0.12); }
.verdict-box.sell { background: var(--red-soft); border: 1px solid rgba(185, 28, 28, 0.1); }
.verdict-box.neutral { background: var(--accent-softer); border: 1px solid rgba(232, 116, 12, 0.12); }
.verdict-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; margin-bottom: 4px;
}
.verdict-box.borrow .verdict-label { color: var(--green); }
.verdict-box.sell .verdict-label { color: var(--red); }
.verdict-box.neutral .verdict-label { color: var(--accent); }
.verdict-text { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }
.verdict-text strong { color: var(--text); }

/* === SCENARIO GRID (Step 3) === */
.scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.scenario-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
}
.scenario-title {
  font-size: 14px; font-weight: 700; margin-bottom: 14px;
}
.scenario-stat {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px;
}
.scenario-stat:last-of-type { border-bottom: none; }
.scenario-stat .label { color: var(--text-secondary); }
.scenario-stat .value { font-family: 'JetBrains Mono', monospace; font-weight: 500; }

.scenario-callout {
  margin-top: 14px; padding: 14px 16px; border-radius: var(--radius-sm);
  font-size: 13px; line-height: 1.5;
}
.scenario-callout strong { font-weight: 700; }
.callout-green { background: var(--green-soft); color: var(--green-text); }
.callout-red { background: var(--red-soft); color: var(--red); }
.callout-neutral { background: var(--bg-warm); color: var(--text-secondary); }
.callout-neutral strong { color: var(--text); }

/* Liquidation vs Floor display */
.liq-vs-floor {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.liq-side { flex: 1; }
.liq-side .liq-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 2px; }
.liq-side .liq-price { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 600; }
.liq-vs { font-size: 20px; color: var(--muted); }

/* === CTA === */
.cta-card {
  background: var(--card); border: 2px solid var(--accent); border-radius: var(--radius);
  padding: 36px; text-align: center; margin-top: 48px;
  box-shadow: 0 4px 20px rgba(232, 116, 12, 0.08);
}
.cta-card h3 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px;
}
.cta-card p { font-size: 14px; color: var(--text-secondary); max-width: 420px; margin: 0 auto 24px; line-height: 1.55; }
.cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; background: var(--accent); color: white; border: none;
  border-radius: 100px; font-size: 15px; font-weight: 600;
  cursor: pointer; font-family: inherit; transition: all 0.2s; text-decoration: none;
}
.cta-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232, 116, 12, 0.25); }
.cta-details { display: flex; justify-content: center; gap: 24px; margin-top: 16px; font-size: 12px; color: var(--muted); }
.cta-details span { display: flex; align-items: center; gap: 4px; }

/* === CYCLE / HISTOGRAM CARD === */
.cycle-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 28px; box-shadow: var(--shadow-sm); margin-top: 16px;
  animation: fadeUp 0.4s ease both;
}
.cycle-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px;
}
.cycle-label {
  font-size: 13px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--muted);
}
.cycle-tag {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 12px; border-radius: 100px;
}
.cycle-tag.discount { background: var(--green-soft); color: var(--green-text); }
.cycle-tag.premium { background: var(--red-soft); color: var(--red); }
.cycle-tv {
  font-family: 'JetBrains Mono', monospace; font-size: 32px; font-weight: 700;
  letter-spacing: -0.03em; margin-bottom: 8px;
}
.cycle-stats {
  display: flex; gap: 20px; font-size: 13px; color: var(--text-secondary);
  margin-bottom: 16px; flex-wrap: wrap;
}
.cycle-stats strong { color: var(--text); font-weight: 600; }
.histogram-wrap { margin: 0 -8px; }

/* === NAV LINK === */
.nav-link {
  font-size: 13px; font-weight: 600; color: var(--accent);
  text-decoration: none; padding: 5px 14px; border-radius: 100px;
  border: 1px solid rgba(232, 116, 12, 0.2); transition: all 0.15s;
}
.nav-link:hover { background: var(--accent-soft); border-color: var(--accent); }

/* === BRIDGE CARD === */
.bridge-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 24px; margin-top: 32px; box-shadow: var(--shadow-sm);
  animation: fadeUp 0.4s ease both;
}
.bridge-icon { font-size: 24px; flex-shrink: 0; }
.bridge-text { flex: 1; font-size: 14px; color: var(--text-secondary); line-height: 1.5; }
.bridge-text strong { color: var(--text); }
.bridge-btn {
  flex-shrink: 0; font-size: 13px; font-weight: 600; color: var(--accent);
  text-decoration: none; padding: 8px 18px; border-radius: 100px;
  border: 1px solid rgba(232, 116, 12, 0.25); white-space: nowrap; transition: all 0.15s;
}
.bridge-btn:hover { background: var(--accent-soft); border-color: var(--accent); }

/* === FOOTER === */
footer {
  padding: 32px 24px; text-align: center; font-size: 11px;
  color: var(--muted); line-height: 1.8;
  border-top: 1px solid var(--border); margin-top: 48px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  nav { padding: 12px 16px; flex-wrap: wrap; justify-content: center; gap: 8px; }
  .logo { width: 100%; justify-content: center; }
  .nav-right { width: 100%; justify-content: center; }
  .page { padding: 0 16px; }
  .input-main { flex-direction: column; align-items: stretch; }
  .input-arrow { display: none; }
  .advanced-settings { flex-direction: column; }
  .input-group { min-width: 100%; }
  .compare-grid, .scenario-grid { grid-template-columns: 1fr; }
  .step h2 { font-size: 20px; }
  .liq-side .liq-price { font-size: 18px; }
  .bridge-card { flex-direction: column; text-align: center; }
  .bridge-btn { width: 100%; text-align: center; }
}