/* ===================================================
   PORÓWNAJMY.TO — Nowoczesny Design System v2.0
   =================================================== */

/* Import fonts */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Primary Palette */
  --p: #0F52BA;
  --pd: #0a3d8f;
  --pl: #3b82f6;
  --a: #00C897;
  --ad: #00a87f;

  /* Backgrounds */
  --bg: #F7F9FC;
  --s: #FFFFFF;
  --s2: #F0F4F8;

  /* Text */
  --t: #111827;
  --t2: #6B7280;
  --t3: #9CA3AF;

  /* Borders */
  --b: #E5E7EB;
  --b2: #D1D5DB;

  /* Shadows */
  --sm: 0 1px 3px rgba(0,0,0,.08);
  --md: 0 4px 16px rgba(0,0,0,.10);
  --lg: 0 8px 32px rgba(0,0,0,.14);

  /* Radius */
  --r: 12px;
  --rs: 8px;
  --rl: 16px;
  --rxl: 24px;
}

[data-theme="dark"] {
  --bg: #0D1117;
  --s: #161B22;
  --s2: #1C2128;
  --t: #E6EDF3;
  --t2: #8B949E;
  --t3: #6E7681;
  --b: #30363D;
  --b2: #21262D;
  --sm: 0 1px 3px rgba(0,0,0,.3);
  --md: 0 4px 16px rgba(0,0,0,.4);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--t);
  line-height: 1.5;
  min-height: 100vh;
  transition: background .3s, color .3s;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ===================== TOPBAR ===================== */
.topbar {
  background: var(--s);
  border-bottom: 1px solid var(--b);
  padding: 0 28px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--sm);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--p), var(--pl));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 2.5; stroke-linecap: round; }
.logo-text { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 800; font-size: 17px; color: var(--p); }
.logo-text span { color: var(--a); }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--rs);
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: .2s;
  font-family: 'Inter', sans-serif;
}
.btn-ghost { color: var(--t2); background: transparent; border: 1.5px solid var(--b); }
.btn-ghost:hover { border-color: var(--p); color: var(--p); }
.btn-primary { background: linear-gradient(135deg, var(--p), var(--pd)); color: #fff; box-shadow: 0 4px 14px rgba(15,82,186,.3); }
.btn-primary:hover { box-shadow: 0 6px 20px rgba(15,82,186,.45); transform: translateY(-1px); }
.btn-accent { background: var(--a); color: #fff; }
.btn-accent:hover { background: var(--ad); transform: translateY(-1px); }
.btn-sm { padding: 6px 12px; font-size: 12px; }

.theme-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--s2);
  border: 1px solid var(--b);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  transition: .2s;
}
.theme-btn:hover { border-color: var(--p); }

/* ===================== HERO ===================== */
.hero {
  background: linear-gradient(135deg, #0F52BA 0%, #0a3d8f 55%, #072c6e 100%);
  padding: 72px 28px 88px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(0,200,151,.08) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(59,130,246,.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.9);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}
.hero h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(28px, 5vw, 54px);
  font-weight: 800;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 18px;
  letter-spacing: -.02em;
}
.hero h1 span { color: #00C897; }
.hero p {
  color: rgba(255,255,255,.75);
  font-size: clamp(14px, 2vw, 18px);
  max-width: 500px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.search-box {
  display: flex;
  max-width: 560px;
  margin: 0 auto 36px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: 0 8px 40px rgba(0,0,0,.25);
  overflow: hidden;
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  padding: 16px 20px;
  font-size: 14px;
  color: #111;
  background: transparent;
  font-family: 'Inter', sans-serif;
}
.search-box button {
  background: var(--p);
  color: #fff;
  border: none;
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: .2s;
  font-family: 'Inter', sans-serif;
}
.search-box button:hover { background: var(--pd); }

.hero-stats { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.hero-stat { color: rgba(255,255,255,.75); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.hero-stat strong { color: #fff; font-weight: 700; }

/* ==================== STATS BAR ==================== */
.stats-bar { background: var(--p); padding: 11px 28px; }
.stats-bar-inner { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; max-width: 1260px; margin: 0 auto; }
.stat-item { color: rgba(255,255,255,.8); font-size: 12px; display: flex; align-items: center; gap: 8px; }
.stat-item strong { color: #fff; font-weight: 700; font-size: 14px; }

/* ==================== CONTAINER ==================== */
.container { width: 100%; max-width: 1260px; margin: 0 auto; padding: 0 24px; }

/* ==================== SECTIONS ==================== */
.section { padding: 56px 0; }
.section-alt { padding: 56px 0; background: var(--s2); }
.section-header { margin-bottom: 28px; }
.section-header.center { text-align: center; }
.section-header.flex { display: flex; justify-content: space-between; align-items: center; }
.section-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(18px, 3vw, 26px);
  font-weight: 700;
  color: var(--t);
  margin-bottom: 6px;
}
.section-sub { color: var(--t2); font-size: 14px; }

/* ==================== CATEGORIES ==================== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.cat-card {
  background: var(--s);
  border: 1px solid var(--b);
  border-radius: var(--r);
  padding: 16px 8px 14px;
  text-align: center;
  cursor: pointer;
  color: var(--t);
  transition: .25s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  border-top-width: 3px;
}
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--md); border-color: transparent; }
.cat-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.cat-icon svg { width: 22px; height: 22px; stroke-width: 1.75; fill: none; stroke: #fff; }
.cat-name { font-size: 11px; font-weight: 600; color: var(--t); line-height: 1.3; }
.cat-badge {
  position: absolute; top: 6px; right: 6px;
  background: var(--a); color: #fff;
  font-size: 9px; font-weight: 700;
  padding: 2px 5px; border-radius: 50px;
  letter-spacing: .03em;
}
.cat-badge.soon { background: var(--t3); }

/* ==================== CALCULATOR ==================== */
.calc-card {
  background: var(--s);
  border-radius: var(--rl);
  box-shadow: var(--md);
  overflow: hidden;
  border: 1px solid var(--b);
}
.calc-header {
  background: linear-gradient(135deg, var(--p), var(--pd));
  padding: 22px 26px;
  display: flex; align-items: center; gap: 14px;
}
.calc-header-icon {
  width: 42px; height: 42px;
  background: rgba(255,255,255,.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.calc-header-icon svg { width: 20px; height: 20px; stroke: #fff; fill: none; stroke-width: 2; }
.calc-header h2 { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 18px; font-weight: 700; color: #fff; margin: 0; }
.calc-header p { color: rgba(255,255,255,.7); font-size: 12px; margin-top: 3px; }

.calc-tabs { display: flex; border-bottom: 1px solid var(--b); background: var(--s); overflow-x: auto; }
.calc-tab {
  padding: 13px 18px; font-size: 13px; font-weight: 500; color: var(--t2);
  cursor: pointer; border-bottom: 2px solid transparent; transition: .2s; white-space: nowrap; flex-shrink: 0;
}
.calc-tab.active { color: var(--p); border-bottom-color: var(--p); font-weight: 600; }
.calc-tab:hover:not(.active) { color: var(--t); }

.calc-body { display: grid; grid-template-columns: 3fr 2fr; }
.calc-params { padding: 24px; }
.calc-filters { padding: 24px; border-left: 1px solid var(--b); background: var(--s2); }

.param-row { margin-bottom: 24px; }
.param-label { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 12px; font-weight: 600; color: var(--t3); text-transform: uppercase; letter-spacing: .05em; }
.param-value { color: var(--p); font-weight: 700; font-size: 13px; }

input[type=range] {
  width: 100%; height: 4px; border-radius: 2px; outline: none;
  cursor: pointer; -webkit-appearance: none;
  background: linear-gradient(to right, var(--p) var(--val, 0%), var(--b) var(--val, 0%));
  transition: .1s;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--p);
  box-shadow: 0 2px 6px rgba(15,82,186,.25); cursor: grab; transition: .15s;
}
input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type=range]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--p); cursor: grab;
}

.filter-group { margin-bottom: 18px; }
.filter-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--t3); margin-bottom: 8px; }
.toggle-row { display: flex; background: var(--s2); border-radius: var(--rs); padding: 3px; gap: 2px; border: 1px solid var(--b); }
.toggle-btn {
  flex: 1; padding: 7px 10px; border-radius: 6px; font-size: 12px; font-weight: 500;
  cursor: pointer; border: none; background: transparent; color: var(--t2); transition: .2s; text-align: center;
  font-family: 'Inter', sans-serif;
}
.toggle-btn.active { background: var(--p); color: #fff; box-shadow: 0 2px 8px rgba(15,82,186,.3); }
.chip-row { display: flex; flex-wrap: wrap; gap: 5px; }
.chip {
  padding: 6px 12px; border-radius: 50px; font-size: 12px; font-weight: 500;
  cursor: pointer; border: 1.5px solid var(--b); background: var(--s); color: var(--t2); transition: .2s;
}
.chip:hover, .chip.active { border-color: var(--p); color: var(--p); background: rgba(15,82,186,.06); }

.calc-footer { padding: 18px 24px; border-top: 1px solid var(--b); }
.btn-search {
  width: 100%; padding: 14px; font-size: 15px; font-weight: 700;
  border: none; border-radius: var(--r);
  background: linear-gradient(135deg, var(--p), var(--pd));
  color: #fff; cursor: pointer; transition: .2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 4px 16px rgba(15,82,186,.35);
  font-family: 'Inter', sans-serif;
}
.btn-search:hover { box-shadow: 0 6px 24px rgba(15,82,186,.5); transform: translateY(-1px); }
.btn-search svg { width: 16px; height: 16px; stroke: #fff; fill: none; stroke-width: 2.5; }

/* ==================== RESULTS ==================== */
.results-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-top: 1px solid var(--b);
}
.results-count { font-size: 13px; color: var(--t2); }
.results-count strong { color: var(--t); }
.sort-select { padding: 7px 10px; border-radius: var(--rs); border: 1px solid var(--b); background: var(--s); color: var(--t); font-size: 12px; cursor: pointer; }
.offers-list { padding: 0 24px 24px; display: flex; flex-direction: column; gap: 10px; }
.offer-card {
  display: grid; grid-template-columns: 64px 1fr auto;
  align-items: center; gap: 14px; padding: 14px 16px;
  background: var(--s); border: 1px solid var(--b); border-radius: var(--r);
  transition: .2s; cursor: pointer;
}
.offer-card:hover { border-color: var(--p); box-shadow: 0 4px 14px rgba(15,82,186,.1); }
.offer-card.best { border-color: var(--a); border-width: 2px; position: relative; }
.offer-card.best::before {
  content: 'POLECANA'; position: absolute; top: -1px; left: 14px;
  background: var(--a); color: #fff; font-size: 9px; font-weight: 800;
  padding: 2px 7px; border-radius: 0 0 5px 5px; letter-spacing: .08em;
}
.offer-logo {
  width: 60px; height: 38px; background: var(--s2); border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; color: var(--t3); border: 1px solid var(--b);
}
.offer-name { font-weight: 600; font-size: 13px; color: var(--t); margin-bottom: 4px; }
.offer-tags { display: flex; flex-wrap: wrap; gap: 3px; }
.offer-tag { font-size: 10px; padding: 2px 7px; border-radius: 50px; background: rgba(15,82,186,.07); color: var(--p); font-weight: 500; }
.offer-tag.green { background: rgba(0,200,151,.08); color: #009f76; }
.offer-price-wrap { text-align: right; }
.offer-price { font-size: 21px; font-weight: 800; color: var(--t); line-height: 1; font-family: 'Plus Jakarta Sans', sans-serif; }
.offer-price-sub { font-size: 10px; color: var(--t3); margin-top: 2px; }
.offer-cta { margin-top: 8px; padding: 7px 14px; border-radius: 6px; background: var(--a); color: #fff; border: none; font-size: 12px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: .2s; }
.offer-cta:hover { background: var(--ad); }

/* ==================== FEATURES ==================== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { background: var(--s); border: 1px solid var(--b); border-radius: var(--r); padding: 24px; }
.feature-icon { width: 42px; height: 42px; border-radius: 11px; background: rgba(15,82,186,.08); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.feature-icon svg { width: 20px; height: 20px; stroke: var(--p); fill: none; stroke-width: 2; }
.feature-title { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 700; font-size: 15px; color: var(--t); margin-bottom: 6px; }
.feature-text { font-size: 13px; color: var(--t2); line-height: 1.6; }

/* ==================== NEWS ==================== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.news-card { background: var(--s); border: 1px solid var(--b); border-radius: var(--r); overflow: hidden; transition: .2s; cursor: pointer; }
.news-card:hover { box-shadow: var(--md); transform: translateY(-2px); }
.news-img { height: 130px; display: flex; align-items: center; justify-content: center; font-size: 36px; }
.news-body { padding: 14px; }
.news-date { font-size: 10px; color: var(--t3); margin-bottom: 5px; font-weight: 500; }
.news-title { font-weight: 600; font-size: 13px; line-height: 1.45; color: var(--t); }
.news-excerpt { font-size: 12px; color: var(--t2); margin-top: 5px; line-height: 1.5; }

/* ==================== FOOTER ==================== */
footer { background: #0D1117; color: #8B949E; padding: 48px 24px 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; max-width: 1260px; margin-left: auto; margin-right: auto; }
.footer-brand p { font-size: 12px; margin-top: 10px; line-height: 1.7; }
.footer-col h4 { color: #E6EDF3; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
.footer-col a { display: block; color: #8B949E; font-size: 12px; margin-bottom: 9px; transition: .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #21262D; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 11px; flex-wrap: wrap; gap: 8px; max-width: 1260px; margin: 0 auto; }
.footer-legal { color: #6E7681; }

/* ==================== FAB & PWA ==================== */
.fab {
  position: fixed; bottom: 24px; right: 24px;
  width: 50px; height: 50px; border-radius: 50%;
  background: linear-gradient(135deg, var(--p), var(--pd));
  box-shadow: 0 4px 20px rgba(15,82,186,.4);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 150; border: none; transition: .2s;
}
.fab:hover { transform: scale(1.08); }
.fab svg { width: 20px; height: 20px; stroke: #fff; fill: none; stroke-width: 2; }

.install-banner {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--s); border: 1px solid var(--b); border-radius: var(--r);
  padding: 12px 18px; box-shadow: var(--lg);
  display: flex; align-items: center; gap: 12px; z-index: 200;
  max-width: 380px; width: calc(100% - 32px);
  animation: slideUp .4s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateX(-50%) translateY(20px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }
.install-icon { width: 34px; height: 34px; background: var(--p); border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 16px; }
.install-text { flex: 1; font-size: 12px; font-weight: 500; color: var(--t); }
.install-text span { display: block; font-size: 11px; color: var(--t2); font-weight: 400; margin-top: 1px; }
.install-close { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--t3); line-height: 1; }

/* ==================== SKELETON ==================== */
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.skeleton {
  background: linear-gradient(90deg, var(--s2) 25%, var(--b) 50%, var(--s2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) { .categories-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 768px) {
  .topbar { padding: 0 16px; }
  .hero { padding: 48px 16px 64px; }
  .container { padding: 0 16px; }
  .section, .section-alt { padding: 40px 0; }
  .categories-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .calc-body { grid-template-columns: 1fr; }
  .calc-filters { border-left: none; border-top: 1px solid var(--b); }
  .features-grid { grid-template-columns: 1fr; gap: 10px; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 16px; }
  .stats-bar-inner { gap: 16px; }
}
@media (max-width: 480px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .offer-card { grid-template-columns: 50px 1fr; }
  .offer-price-wrap { grid-column: 1 / -1; text-align: left; }
  .hero h1 { font-size: 28px; }
  .search-box { flex-direction: column; border-radius: var(--r); }
  .search-box button { width: 100%; border-radius: 0 0 var(--r) var(--r); }
}