/* ============================================================
   BAZOWY STYL APLIKACJI — Luksusowe złoto
   (wspólny dla wszystkich aplikacji)
   ============================================================ */
:root {
  --bg: #0a0a0a;
  --bg-2: #100f0c;
  --border: #1a1815;
  --border-strong: #2a2620;

  --gold: #c9a96a;
  --gold-light: #e0c48a;
  --gold-soft: rgba(201, 169, 106, 0.06);
  --gold-glow: rgba(201, 169, 106, 0.35);

  --text: #f5f1e8;
  --text-dim: #8b8578;
  --text-faint: #5c574c;

  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

/* ============================================================
   NAWIGACJA
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border: 1px solid var(--gold);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 1.5px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text b {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
}

.brand-text em {
  font-style: normal;
  font-size: 0.66rem;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--text-dim);
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--gold); }

/* ============================================================
   NAGŁÓWEK APLIKACJI
   ============================================================ */
.app-header {
  padding: 70px 32px 40px;
  border-bottom: 1px solid var(--border);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 24px;
}

.tag::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--gold);
}

.app-header h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  color: var(--text);
}

.app-header h1 em {
  font-style: italic;
  color: var(--gold);
}

.app-header .lead {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 560px;
}

/* ============================================================
   APLIKACJA
   ============================================================ */
.app-body {
  padding: 60px 32px 100px;
  flex: 1;
}

.calc-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 720px;
  margin: 0 auto;
}

/* ---- Segmenty ---- */
.segmented {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.segmented button {
  background: var(--bg);
  color: var(--text-dim);
  border: none;
  padding: 14px 16px;
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}

.segmented button:hover { color: var(--text); }

.segmented button.active {
  background: var(--gold);
  color: #0a0a0a;
}

/* ---- Pola ---- */
.calc-field {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-field label {
  font-size: 0.72rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-wrapper:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-soft);
}

.input-wrapper input,
.input-wrapper select {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 700;
  padding: 16px 20px;
  letter-spacing: -0.01em;
  width: 100%;
}

.input-wrapper input::placeholder {
  color: var(--text-faint);
  font-weight: 400;
}

.input-wrapper.small input,
.input-wrapper.small select {
  font-size: 1rem;
  padding: 12px 16px;
  font-family: var(--sans);
  font-weight: 600;
}

.input-suffix {
  padding: 0 20px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 1px;
  border-left: 1px solid var(--border);
  align-self: stretch;
  display: flex;
  align-items: center;
}

.input-wrapper.small .input-suffix {
  padding: 0 14px;
  font-size: 0.75rem;
}

/* ---- Stawki ---- */
.rate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.rate-btn {
  background: var(--bg);
  color: var(--text-dim);
  border: none;
  padding: 16px 8px;
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.5px;
}

.rate-btn:hover { color: var(--gold); background: #12100c; }

.rate-btn.active {
  background: var(--gold);
  color: #0a0a0a;
}

/* ---- Wynik ---- */
.calc-result {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

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

.result-label {
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}

.result-value {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

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

.result-row.highlight .result-value {
  font-family: var(--serif);
  font-size: 1.8rem;
  color: var(--gold);
  letter-spacing: -0.02em;
}

/* ---- Tabela wyników ---- */
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.result-table th {
  text-align: left;
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.result-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.88rem;
}

.result-table tr:last-child td { border-bottom: none; }

.result-table td:first-child {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--text);
}

.result-table td.date {
  color: var(--gold);
  font-weight: 700;
}

/* ---- Akcje ---- */
.calc-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 26px;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1;
  flex: 1;
}

.btn-gold {
  background: var(--gold);
  color: #0a0a0a;
  border-color: var(--gold);
}

.btn-gold:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  box-shadow: 0 12px 32px -12px var(--gold-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold);
}

.btn-outline:hover {
  background: var(--gold-soft);
  transform: translateY(-2px);
}

/* ============================================================
   STOPKA
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 32px;
  background: var(--bg);
  margin-top: auto;
}

.footer .container {
  max-width: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.footer-sep { color: var(--gold); }

/* ============================================================
   RESPONSYWNOŚĆ
   ============================================================ */
@media (max-width: 720px) {
  .container,
  .nav-inner { padding-left: 20px; padding-right: 20px; }
  .nav-links { display: none; }
  .app-header,
  .app-body { padding-left: 20px; padding-right: 20px; }
  .app-header { padding-top: 50px; padding-bottom: 30px; }
  .app-body { padding-top: 40px; padding-bottom: 60px; }
  .calc-card { padding: 26px 22px; gap: 24px; }
  .input-wrapper input,
  .input-wrapper select { font-size: 1.35rem; padding: 14px 16px; }
  .calc-actions { flex-direction: column; }
  .btn { flex: none; }
}