/* === Optyka morska — Zdrowe Oczy Gdynia === */

  /* Palette: salmon-apricot · coastal blue */
:root {
  --ink: #0A2540;
  --ink-bg: #2E6AA8;
  --ink-soft: #2A4561;
  --muted: #7A6A5C;
  --line: #E6CFB7;
  --hairline: #EFDDC9;

  --primary: #2563A6;
  --primary-deep: #173E6E;
  --primary-soft: #6FA8D6;
  --mist: #F2D2B2;
  --wash: #FAE7D5;

  --paper: #F1D2B0;
  --paper-soft: #F6DDC2;
  --bg: #FCEFE2;

  --accent: #C99A4A;

  /* Deep blue gradient — dark → lighter → dark */
  --blue-grad: linear-gradient(180deg, #0F2A4D 0%, #1F4F86 18%, #3D86C6 50%, #1F4F86 82%, #0F2A4D 100%);
  --blue-grad-btn: linear-gradient(180deg, #173E6E 0%, #3D86C6 50%, #173E6E 100%);

  /* Type */
  --font-display: "Newsreader", "Source Serif 4", Georgia, serif;
  --font-body: "Geist", "Plus Jakarta Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Layout */
  --container: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 6px;

  /* Vertical rhythm between sections */
  --section-pad: 24px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
/* Offset in-page anchor jumps so targets clear the 72px sticky header */
html { scroll-padding-top: 88px; }
body {
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Display type */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.05;
  color: var(--ink);
}
.display em { font-style: italic; color: var(--primary-deep); font-weight: 300; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 24px; height: 1px; background: var(--primary);
  display: inline-block;
}

.lede { font-size: 21px; color: var(--ink-soft); line-height: 1.55; max-width: 56ch; }

/* === Header / Nav === */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(252, 239, 226, 0.82);
  border-bottom: 1px solid var(--hairline);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-size: 20px; letter-spacing: -0.01em;
  color: var(--ink);
}
.logo-mark {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  flex-shrink: 0;
}
.logo-name { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name b { font-weight: 600; }
.logo-name small { font-size: 11px; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; font-family: var(--font-body); }

.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  font-size: 16px; color: var(--ink-soft); font-weight: 500;
  position: relative; padding: 6px 0;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--primary); transition: width .25s ease;
}
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: var(--blue-grad-btn);
  color: #fff;
  border-radius: 999px;
  font-size: 15px; font-weight: 500;
  transition: filter .15s ease, transform .15s ease;
}
.nav-cta:hover { filter: brightness(1.08); transform: translateY(-1px); }
.nav-cta svg { width: 14px; height: 14px; }

.nav-toggle { display: none; }

@media (max-width: 960px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle {
    display: grid; place-items: center;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: var(--wash);
    border: 1px solid var(--line);
    position: relative;
  }
  .nav-toggle .icon-close { display: none; }
  .site-header.open .nav-toggle .icon-menu { display: none; }
  .site-header.open .nav-toggle .icon-close { display: block; }
  .site-header.open .nav-toggle { background: var(--blue-grad-btn); color: #fff; border-color: var(--primary-deep); }
  .site-header.open .mobile-menu { display: flex; }
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid var(--hairline);
  background: var(--bg);
}
.mobile-menu a {
  padding: 16px;
  border-bottom: 1px solid var(--hairline);
  font-size: 17px;
  color: #fff;
  background: var(--blue-grad-btn);
  border-radius: 4px;
  margin-bottom: 4px;
  display: flex; justify-content: space-between; align-items: center;
}
.mobile-menu a:last-of-type { border-bottom: none; }
.mobile-menu .nav-cta { display: inline-flex; margin-top: 12px; align-self: flex-start; padding: 14px 22px; }