:root {
  /* Spoločné tokeny s konfigurátorom (/konfigurator/app.css) — jeden dizajn pre celý web. */
  --navy: #245C43;        /* primárna zelená (bývalá navy) */
  --navy-800: #1c4a36;
  --rust: #245C43;        /* akcent = primárna (bývalá hrdzavá) */
  --rust-dark: #1c4a36;
  --bg: #F5F6F3;
  --surface: #ffffff;
  --border: #DCE2DC;
  --ctrl: #7A877E;
  --selected: #EAF3ED;
  --text: #18221D;
  --muted: #526058;
  --ok: #1f7a4d;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(24, 34, 29, .05), 0 12px 32px rgba(24, 34, 29, .08);
  --maxw: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .6rem; }
h1 { font-size: clamp(1.9rem, 5vw, 2.9rem); }
h2 { font-size: clamp(1.3rem, 3.4vw, 1.75rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }
a { color: var(--rust-dark); }
.muted { color: var(--muted); }
.small { font-size: .87rem; }

/* ---------- header (rovnaká ako v konfigurátore) ---------- */
.site-header {
  background: var(--surface); color: var(--text);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
}
.site-header .container { width: min(100% - 3rem, 1680px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 56px; }
.brand {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--text); text-decoration: none; font-size: 1.05rem; font-weight: 600;
}
.brand strong { color: var(--text); font-weight: 700; }
.brand-icon { width: 26px; height: 26px; color: var(--navy); }
.header-note { font-size: .85rem; color: var(--muted); }
.header-nav { display: flex; gap: .25rem; font-size: 1rem; overflow-x: auto; }
.header-nav a { color: var(--muted); text-decoration: none; padding: .5rem .75rem; border-radius: 8px; white-space: nowrap; }
.header-nav a:hover { color: var(--text); background: var(--bg); }
.header-nav a[aria-current="page"] { color: var(--navy); background: var(--selected); font-weight: 600; }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(170deg, var(--navy) 0%, var(--navy-800) 100%);
  color: #fff;
  padding: 3.2rem 0 4.6rem;
  text-align: center;
}
.hero h1 { color: #fff; }
.hero-sub { font-size: 1.1rem; color: #d6e6dc; max-width: 44ch; margin-inline: auto; }
.trust-row {
  list-style: none; display: flex; flex-wrap: wrap; justify-content: center;
  gap: .5rem 1.4rem; padding: 0; margin: 1.5rem 0 0; font-size: .92rem; color: #b9d1c2;
}

/* ---------- calc card ---------- */
.calc-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.25rem, 4vw, 2.4rem);
  margin-top: -3rem;
  position: relative;
}

.progress {
  list-style: none; display: flex; gap: .35rem; padding: 0;
  margin: 0 0 2rem; overflow-x: auto; scrollbar-width: none;
}
.progress::-webkit-scrollbar { display: none; }
.progress li {
  display: flex; align-items: center; gap: .45rem;
  font-size: .82rem; color: var(--muted); white-space: nowrap; flex: 1;
  padding-bottom: .6rem; border-bottom: 3px solid var(--border);
}
.progress li span {
  display: grid; place-items: center; width: 22px; height: 22px; flex: none;
  border-radius: 50%; background: var(--border); color: var(--muted);
  font-size: .75rem; font-weight: 700;
}
.progress li.is-active { color: var(--navy); font-weight: 600; border-bottom-color: var(--rust); }
.progress li.is-active span { background: var(--rust); color: #fff; }
.progress li.is-done { color: var(--ok); border-bottom-color: var(--ok); }
.progress li.is-done span { background: var(--ok); color: #fff; }

.step { display: none; }
.step.is-active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- options ---------- */
.option-grid {
  display: grid; gap: .8rem; margin: 1.2rem 0 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.option-grid-4 { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }

.option {
  display: flex; flex-direction: column; gap: .3rem; align-items: flex-start;
  text-align: left; font: inherit; cursor: pointer;
  padding: 1rem; border: 2px solid var(--border); border-radius: 12px;
  background: var(--surface); color: var(--text);
  transition: border-color .15s, background .15s, transform .1s;
}
.option:hover { border-color: var(--ctrl); }
.option:active { transform: scale(.99); }
.option.is-selected { border-color: var(--rust); background: var(--selected); }
.option svg { width: 42px; height: 42px; color: var(--navy); margin-bottom: .15rem; }
.option.is-selected svg { color: var(--rust); }
.option strong { font-size: 1rem; }
.option small { color: var(--muted); font-size: .85rem; line-height: 1.35; }
.option .price-tag {
  margin-top: .35rem; font-style: normal; font-size: .82rem; font-weight: 700;
  color: var(--navy); background: var(--selected); padding: .15rem .5rem; border-radius: 5px;
}
.option.is-selected .price-tag { color: var(--rust-dark); background: var(--selected); }
.option-grid-4 .option { align-items: center; text-align: center; }

/* ---------- fields ---------- */
.dim-row { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); margin-bottom: 1rem; }
.field { display: flex; flex-direction: column; gap: .35rem; font-size: .9rem; font-weight: 600; color: var(--navy); }
.field input[type="number"], .field input[type="text"], .field input[type="tel"] {
  font: inherit; font-weight: 400; padding: .7rem .85rem;
  border: 1.5px solid var(--border); border-radius: 9px; background: #fff; color: var(--text);
  width: 100%;
}
:focus-visible { outline: 3px solid var(--navy); outline-offset: 2px; }
.field-slope { grid-column: 1 / -1; }
input[type="range"] { width: 100%; accent-color: var(--rust); height: 1.6rem; }
#slopeOut { font-weight: 700; color: var(--rust-dark); }

.area-preview {
  background: var(--selected); border-radius: 9px; padding: .7rem .95rem;
  font-size: .95rem; margin-bottom: 0;
}
.area-preview strong { color: var(--navy); font-size: 1.05rem; }

/* ---------- addons ---------- */
.addon-list { display: grid; gap: .7rem; margin: 1.2rem 0 1.5rem; }
.addon {
  display: flex; align-items: center; gap: .85rem; cursor: pointer;
  padding: .9rem 1rem; border: 1.5px solid var(--border); border-radius: 11px; background: #fff;
}
.addon:hover { border-color: var(--ctrl); }
.addon:has(input:checked) { border-color: var(--rust); background: var(--selected); }
.addon input[type="checkbox"] { width: 21px; height: 21px; accent-color: var(--rust); flex: none; }
.addon span { display: flex; flex-direction: column; }
.addon small { color: var(--muted); font-size: .85rem; }
.addon-number { justify-content: space-between; }
.addon-number input { width: 84px; font: inherit; padding: .5rem .6rem; border: 1.5px solid var(--border); border-radius: 8px; }

/* ---------- buttons ---------- */
.step-nav { display: flex; justify-content: space-between; align-items: center; gap: .8rem; margin-top: 1.6rem; }
.btn {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 8px; min-height: 44px;
  padding: .8rem 1.5rem; border: 1.5px solid transparent; transition: background .15s, transform .1s;
}
.btn:active { transform: scale(.985); }
.btn-primary { background: var(--rust); color: #fff; }
.btn-primary:hover { background: var(--rust-dark); }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--navy); border-color: var(--ctrl); }
.btn-lg { width: 100%; padding: .95rem 1.5rem; font-size: 1.05rem; }

/* ---------- result ---------- */
.result-box {
  background: linear-gradient(165deg, var(--navy) 0%, var(--navy-800) 100%);
  color: #fff; border-radius: 12px; padding: 1.8rem 1.2rem; text-align: center; margin: 1.2rem 0 1.4rem;
}
.result-label { color: #b9d1c2; font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 .4rem; }
.result-price { font-size: clamp(1.7rem, 6vw, 2.7rem); font-weight: 700; letter-spacing: -.03em; margin: 0 0 .5rem; }
.result-meta { color: #d6e6dc; font-size: .9rem; margin: 0; }
.result-meta strong { color: #fff; }

.breakdown { width: 100%; border-collapse: collapse; margin-bottom: 1rem; font-size: .95rem; }
.breakdown td { padding: .65rem .2rem; border-bottom: 1px solid var(--border); }
.breakdown td:last-child { text-align: right; font-weight: 600; white-space: nowrap; color: var(--navy); }
.breakdown tr.is-total td { border-bottom: none; border-top: 2px solid var(--navy); font-weight: 700; padding-top: .8rem; }

/* ---------- CTA ---------- */
.cta-box {
  background: var(--selected); border: 2px solid #c7dccd; border-radius: 12px;
  padding: clamp(1.1rem, 3vw, 1.8rem); margin: 1.8rem 0 0;
}
.cta-box h3 { color: var(--navy); }
.lead-row { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: 1rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-hint { margin: .55rem 0 0; text-align: center; }
.form-msg { margin: .8rem 0 0; font-size: .92rem; font-weight: 600; min-height: 1.3em; }
.form-msg.is-ok { color: var(--ok); }
.form-msg.is-err { color: #b3261e; }
.cta-alt { margin: 1rem 0 0; font-size: .92rem; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { margin: 3.5rem auto; }
.faq details {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: .9rem 1.1rem; margin-bottom: .7rem;
}
.faq summary { cursor: pointer; font-weight: 600; color: var(--navy); }
.faq details[open] summary { margin-bottom: .6rem; }
.faq p { margin: 0; color: var(--muted); }

/* ---------- footer ---------- */
.site-footer { background: var(--surface); color: var(--muted); border-top: 1px solid var(--border); padding: 2rem 0; font-size: .88rem; }
.site-footer p { margin: 0 0 .3rem; }
.site-footer a { color: var(--navy); }

@media (max-width: 560px) {
  .progress li { font-size: 0; gap: 0; justify-content: center; }
  .progress li span { font-size: .78rem; }
  .step-nav { flex-direction: column-reverse; }
  .step-nav .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}