/* ==========================================================================
   FAKTURIA — aplikacja do fakturowania dla freelancerów
   Autor: Daniel Prajsnar
   1. Motyw (jasny/ciemny)  2. Reset  3. Typografia  4. Komponenty
   5. Nawigacja  6. Hero + mockup  7. Sekcje  8. Cennik  9. Stopka  10. RWD
   ========================================================================== */

/* 1. MOTYW --------------------------------------------------------------- */
:root {
  --tlo:        #ffffff;
  --tlo-2:      #f6f7fb;
  --tlo-3:      #eef0f7;
  --karta:      #ffffff;
  --tekst:      #0f172a;
  --tekst-mut:  #5b6478;
  --linia:      #e4e7f0;
  --akcent:     #4f46e5;
  --akcent-2:   #06b6d4;
  --akcent-mig: rgba(79, 70, 229, .1);
  --sukces:     #0f9d6b;
  --cien:       0 1px 2px rgba(15, 23, 42, .04), 0 12px 32px rgba(15, 23, 42, .07);
  --cien-mocny: 0 24px 60px rgba(15, 23, 42, .14);

  --naglowki: "Manrope", -apple-system, "Segoe UI", sans-serif;
  --tekst-font: "Inter", -apple-system, "Segoe UI", sans-serif;

  --max:    1180px;
  --r:      16px;
  --sekcja: clamp(4rem, 9vw, 7.5rem);
  --ease:   cubic-bezier(.2, .7, .3, 1);
}

html[data-motyw="ciemny"] {
  --tlo:       #0b1020;
  --tlo-2:     #10162b;
  --tlo-3:     #171f38;
  --karta:     #131a30;
  --tekst:     #eef1f8;
  --tekst-mut: #97a1bb;
  --linia:     #232c47;
  --akcent:    #7c74ff;
  --akcent-2:  #22d3ee;
  --akcent-mig:rgba(124, 116, 255, .16);
  --cien:      0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
  --cien-mocny:0 24px 60px rgba(0, 0, 0, .5);
}

/* 2. RESET --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--tlo);
  color: var(--tekst);
  font-family: var(--tekst-font);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background .35s var(--ease), color .35s var(--ease);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--akcent); outline-offset: 3px; border-radius: 6px; }
::selection { background: var(--akcent); color: #fff; }

/* 3. TYPOGRAFIA ---------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--naglowki); font-weight: 800; line-height: 1.12; letter-spacing: -.03em; }

.t-hero  { font-size: clamp(2.4rem, 5.4vw, 4.1rem); }
.t-duzy  { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
.t-sred  { font-size: clamp(1.2rem, 1.9vw, 1.45rem); font-weight: 700; }
.t-maly  { font-size: 1.02rem; font-weight: 700; }

.plakietka {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .42rem .9rem;
  border-radius: 999px;
  background: var(--akcent-mig);
  color: var(--akcent);
  font-size: .8rem;
  font-weight: 600;
}
.plakietka--zielona { background: rgba(15,157,107,.12); color: var(--sukces); }

.lead { font-size: clamp(1.02rem, 1.4vw, 1.16rem); color: var(--tekst-mut); max-width: 56ch; }
.mut  { color: var(--tekst-mut); }
.mala { font-size: .88rem; }
.grad {
  background: linear-gradient(100deg, var(--akcent), var(--akcent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 4. KOMPONENTY ---------------------------------------------------------- */
.kontener { width: min(100% - 2.4rem, var(--max)); margin-inline: auto; }
.sekcja { padding-block: var(--sekcja); }
.naglowek { display: grid; gap: 1rem; justify-items: center; text-align: center; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.naglowek p.lead { text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .9rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--akcent);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
  box-shadow: 0 8px 20px var(--akcent-mig);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px var(--akcent-mig); }
.btn--obrys { background: transparent; color: var(--tekst); border-color: var(--linia); box-shadow: none; }
.btn--obrys:hover { border-color: var(--akcent); color: var(--akcent); }
.btn--duzy { padding: 1.05rem 2rem; font-size: 1rem; }
.btn svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 2; }

.karta {
  background: var(--karta);
  border: 1px solid var(--linia);
  border-radius: var(--r);
  padding: 1.8rem;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.karta--klik:hover { transform: translateY(-4px); box-shadow: var(--cien); border-color: var(--akcent); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.widoczny { opacity: 1; transform: none; }
.reveal[data-op="1"] { transition-delay: .09s; }
.reveal[data-op="2"] { transition-delay: .18s; }
.reveal[data-op="3"] { transition-delay: .27s; }

/* 5. NAWIGACJA ----------------------------------------------------------- */
.pasek {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  padding-block: .9rem;
  transition: background .35s var(--ease), border-color .35s, box-shadow .35s;
  border-bottom: 1px solid transparent;
}
.pasek.przyklejony {
  background: color-mix(in srgb, var(--tlo) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--linia);
}
.pasek__inner { display: flex; align-items: center; gap: 2rem; }

.logo { display: flex; align-items: center; gap: .6rem; font-family: var(--naglowki); font-weight: 800; font-size: 1.16rem; letter-spacing: -.03em; }
.logo__znak {
  display: grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--akcent), var(--akcent-2));
  color: #fff;
  font-size: .95rem;
  font-weight: 800;
}

.menu-gl { display: flex; align-items: center; gap: 1.7rem; margin-left: auto; }
.menu-gl a { font-size: .94rem; font-weight: 500; color: var(--tekst-mut); transition: color .25s; }
.menu-gl a:hover, .menu-gl a[aria-current="page"] { color: var(--tekst); }

.pasek__akcje { display: flex; align-items: center; gap: .7rem; }

.motyw {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--linia);
  border-radius: 11px;
  background: transparent;
  cursor: pointer;
  transition: border-color .25s, color .25s;
}
.motyw:hover { border-color: var(--akcent); color: var(--akcent); }
.motyw svg { width: 19px; height: 19px; stroke: currentColor; fill: none; stroke-width: 1.7; }
.motyw .ikona-ciemny { display: none; }
html[data-motyw="ciemny"] .motyw .ikona-jasny { display: none; }
html[data-motyw="ciemny"] .motyw .ikona-ciemny { display: block; }

.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--linia); border-radius: 11px; background: none; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 11px; width: 17px; height: 1.6px; background: var(--tekst); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s; }
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 19px; }
.burger span:nth-child(3) { top: 24px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 6. HERO ---------------------------------------------------------------- */
.hero { position: relative; padding: clamp(7.5rem, 14vw, 10.5rem) 0 clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  top: -25%; left: 50%;
  width: min(90vw, 900px); height: 620px;
  transform: translateX(-50%);
  background: radial-gradient(circle at 50% 50%, var(--akcent-mig), transparent 68%);
  pointer-events: none;
}
.hero__inner { position: relative; display: grid; gap: 1.5rem; justify-items: center; text-align: center; }
.hero h1 { max-width: 17ch; }
.hero__akcje { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: center; margin-top: .4rem; }
.hero__drobne { display: flex; flex-wrap: wrap; gap: 1.4rem; justify-content: center; font-size: .86rem; color: var(--tekst-mut); }
.hero__drobne span { display: inline-flex; align-items: center; gap: .45rem; }
.hero__drobne svg { width: 16px; height: 16px; stroke: var(--sukces); fill: none; stroke-width: 2.2; }

/* --- mockup aplikacji (czysty CSS) --- */
.mockup {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  border: 1px solid var(--linia);
  border-radius: 18px;
  background: var(--karta);
  box-shadow: var(--cien-mocny);
  overflow: hidden;
}
.mockup__pasek { display: flex; align-items: center; gap: .45rem; padding: .8rem 1rem; border-bottom: 1px solid var(--linia); background: var(--tlo-2); }
.mockup__kropka { width: 10px; height: 10px; border-radius: 50%; background: var(--linia); }
.mockup__adres { margin-left: .8rem; font-size: .76rem; color: var(--tekst-mut); font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.mockup__srodek { display: grid; grid-template-columns: 210px 1fr; min-height: 420px; }

.mock-menu { border-right: 1px solid var(--linia); padding: 1.2rem 1rem; display: grid; gap: .35rem; align-content: start; background: var(--tlo-2); }
.mock-menu b { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--tekst-mut); padding: .4rem .6rem; }
.mock-menu span { display: flex; align-items: center; gap: .6rem; padding: .55rem .6rem; border-radius: 9px; font-size: .88rem; color: var(--tekst-mut); }
.mock-menu span.akt { background: var(--akcent-mig); color: var(--akcent); font-weight: 600; }
.mock-menu i { width: 15px; height: 15px; border-radius: 4px; background: currentColor; opacity: .35; flex: none; }

.mock-panel { padding: 1.4rem 1.5rem; display: grid; gap: 1.2rem; align-content: start; }
.mock-gora { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.mock-kafle { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.mock-kafel { border: 1px solid var(--linia); border-radius: 12px; padding: .9rem 1rem; display: grid; gap: .2rem; }
.mock-kafel span { font-size: .72rem; color: var(--tekst-mut); }
.mock-kafel b { font-family: var(--naglowki); font-size: 1.3rem; letter-spacing: -.02em; }

.wykres { display: flex; align-items: end; gap: .5rem; height: 108px; padding-top: .4rem; }
.wykres div {
  flex: 1;
  background: linear-gradient(180deg, var(--akcent), var(--akcent-2));
  border-radius: 6px 6px 3px 3px;
  opacity: .85;
  animation: slupek 1.1s var(--ease) both;
}
@keyframes slupek { from { height: 0 !important; opacity: 0; } }

.mock-tabela { border: 1px solid var(--linia); border-radius: 12px; overflow: hidden; }
.mock-wiersz { display: grid; grid-template-columns: 1.4fr 1fr .8fr auto; gap: 1rem; padding: .7rem 1rem; font-size: .84rem; border-bottom: 1px solid var(--linia); align-items: center; }
.mock-wiersz:last-child { border-bottom: 0; }
.mock-wiersz--head { background: var(--tlo-2); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--tekst-mut); }
.status { font-size: .72rem; font-weight: 600; padding: .18rem .6rem; border-radius: 999px; justify-self: start; }
.status--ok { background: rgba(15,157,107,.14); color: var(--sukces); }
.status--czeka { background: var(--akcent-mig); color: var(--akcent); }
.status--po { background: rgba(225,72,72,.14); color: #e14848; }

/* --- logotypy klientów --- */
.logotypy { display: flex; flex-wrap: wrap; gap: 2.4rem; justify-content: center; align-items: center; opacity: .62; }
.logotypy span { font-family: var(--naglowki); font-weight: 800; font-size: 1.05rem; letter-spacing: -.02em; }

/* 7. SEKCJE -------------------------------------------------------------- */
.siatka-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.siatka-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }

.funkcja { display: grid; gap: .8rem; align-content: start; }
.funkcja__ikona {
  display: grid; place-items: center;
  width: 46px; height: 46px;
  border-radius: 13px;
  background: var(--akcent-mig);
  color: var(--akcent);
  margin-bottom: .3rem;
}
.funkcja__ikona svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.7; }
.funkcja p { color: var(--tekst-mut); font-size: .96rem; }

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.duo__tresc { display: grid; gap: 1.2rem; align-content: start; }
.duo__foto img { width: 100%; border-radius: var(--r); aspect-ratio: 4 / 3; object-fit: cover; }

.lista-ptaszki { display: grid; gap: .85rem; }
.lista-ptaszki li { display: grid; grid-template-columns: 22px 1fr; gap: .75rem; align-items: start; color: var(--tekst-mut); }
.lista-ptaszki svg { width: 20px; height: 20px; stroke: var(--sukces); fill: none; stroke-width: 2.2; margin-top: .2rem; }
.lista-ptaszki b { color: var(--tekst); }

.liczby { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: center; }
.liczby b { display: block; font-family: var(--naglowki); font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -.03em; }
.liczby span { font-size: .85rem; color: var(--tekst-mut); }

.opinia { display: grid; gap: 1.1rem; align-content: start; }
.opinia p { font-size: 1rem; }
.opinia footer { display: flex; align-items: center; gap: .8rem; }
.awatar {
  display: grid; place-items: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--akcent), var(--akcent-2));
  color: #fff;
  font-weight: 700;
  font-size: .85rem;
  flex: none;
}
.opinia footer b { display: block; font-size: .92rem; }
.opinia footer span { font-size: .82rem; color: var(--tekst-mut); }

/* 8. CENNIK -------------------------------------------------------------- */
.przelacznik {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .3rem;
  border: 1px solid var(--linia);
  border-radius: 999px;
  background: var(--tlo-2);
}
.przelacznik button {
  padding: .55rem 1.2rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  color: var(--tekst-mut);
  transition: background .3s var(--ease), color .3s;
}
.przelacznik button[aria-pressed="true"] { background: var(--karta); color: var(--tekst); box-shadow: var(--cien); }

.plany { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; align-items: start; }
.plan { display: grid; gap: 1.2rem; align-content: start; position: relative; }
.plan--polecany { border-color: var(--akcent); box-shadow: var(--cien); }
.plan__wstega {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  padding: .25rem .85rem;
  border-radius: 999px;
  background: var(--akcent);
  color: #fff;
  font-size: .74rem;
  font-weight: 600;
  white-space: nowrap;
}
.plan__cena { display: flex; align-items: baseline; gap: .35rem; }
.plan__cena b { font-family: var(--naglowki); font-size: clamp(2.1rem, 4vw, 2.8rem); letter-spacing: -.04em; }
.plan__cena span { color: var(--tekst-mut); font-size: .9rem; }
.plan ul { display: grid; gap: .65rem; }
.plan li { display: grid; grid-template-columns: 20px 1fr; gap: .6rem; font-size: .93rem; color: var(--tekst-mut); align-items: start; }
.plan li svg { width: 18px; height: 18px; stroke: var(--sukces); fill: none; stroke-width: 2.2; margin-top: .22rem; }
.plan li.brak { opacity: .55; }
.plan li.brak svg { stroke: var(--tekst-mut); }

.tabela-porownanie { width: 100%; border-collapse: collapse; font-size: .93rem; }
.tabela-porownanie th, .tabela-porownanie td { padding: .95rem 1rem; border-bottom: 1px solid var(--linia); text-align: left; }
.tabela-porownanie th { font-family: var(--naglowki); font-weight: 700; }
.tabela-porownanie td:not(:first-child), .tabela-porownanie th:not(:first-child) { text-align: center; }
.tabela-porownanie tbody tr:hover { background: var(--tlo-2); }
.tak { color: var(--sukces); font-weight: 700; }
.nie { color: var(--tekst-mut); }

/* --- FAQ --- */
.faq { display: grid; gap: .8rem; max-width: 820px; margin-inline: auto; }
.faq details { border: 1px solid var(--linia); border-radius: 12px; background: var(--karta); overflow: hidden; }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1.4rem;
  padding: 1.1rem 1.3rem;
  cursor: pointer;
  font-family: var(--naglowki);
  font-weight: 700;
  font-size: 1rem;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--tekst-mut); transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { padding: 0 1.3rem 1.2rem; color: var(--tekst-mut); font-size: .95rem; }

/* --- formularz --- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.pole { display: grid; gap: .45rem; }
.pole--pelne { grid-column: 1 / -1; }
.pole label { font-size: .85rem; font-weight: 600; }
.pole input, .pole select, .pole textarea {
  width: 100%;
  padding: .8rem .95rem;
  border: 1px solid var(--linia);
  border-radius: 11px;
  background: var(--tlo);
  transition: border-color .25s, box-shadow .25s;
}
.pole input:focus, .pole select:focus, .pole textarea:focus { outline: none; border-color: var(--akcent); box-shadow: 0 0 0 4px var(--akcent-mig); }
.pole textarea { resize: vertical; min-height: 120px; }
.pole__blad { font-size: .8rem; color: #e14848; min-height: 1.1em; }
.pole.blad input, .pole.blad textarea, .pole.blad select { border-color: #e14848; }

.komunikat { display: none; margin-top: 1.2rem; padding: 1.1rem 1.3rem; border-radius: 12px; border: 1px solid var(--sukces); background: rgba(15,157,107,.08); }
.komunikat.pokaz { display: block; }

/* --- pas CTA --- */
.pas-cta {
  border-radius: 22px;
  padding: clamp(2.4rem, 5vw, 4rem);
  background: linear-gradient(120deg, var(--akcent), var(--akcent-2));
  color: #fff;
  display: grid;
  gap: 1.3rem;
  justify-items: center;
  text-align: center;
}
.pas-cta .btn { background: #fff; color: var(--akcent); box-shadow: none; }
.pas-cta .btn:hover { background: rgba(255,255,255,.9); }
.pas-cta p { max-width: 52ch; opacity: .92; }

/* 9. STOPKA -------------------------------------------------------------- */
.stopka { border-top: 1px solid var(--linia); background: var(--tlo-2); padding-top: clamp(3rem, 6vw, 4.5rem); }
.stopka__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 3rem; }
.stopka h4 { font-size: .82rem; margin-bottom: 1rem; }
.stopka__lista { display: grid; gap: .55rem; font-size: .92rem; }
.stopka__lista a { color: var(--tekst-mut); transition: color .25s; }
.stopka__lista a:hover { color: var(--akcent); }
.stopka__dol {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  padding-block: 1.4rem;
  border-top: 1px solid var(--linia);
  font-size: .85rem;
  color: var(--tekst-mut);
}
.stopka__dol a { color: var(--tekst-mut); text-decoration: underline; text-underline-offset: 3px; }
.stopka__dol a:hover { color: var(--akcent); }

/* nagłówek podstrony */
.naglowek-strony { padding: clamp(7.5rem, 13vw, 10rem) 0 clamp(2rem, 4vw, 3rem); text-align: center; display: grid; gap: 1.1rem; justify-items: center; }

/* 10. RWD ---------------------------------------------------------------- */
@media (max-width: 940px) {
  .mockup__srodek { grid-template-columns: 1fr; }
  .mock-menu { display: none; }
  .siatka-3, .plany, .liczby { grid-template-columns: repeat(2, 1fr); }
  .duo { grid-template-columns: 1fr; }
  .stopka__grid { grid-template-columns: 1fr 1fr; }

  .burger { display: block; z-index: 96; }
  .pasek__akcje > .btn { display: none; }  /* CTA zostaje w treści strony, w pasku brakuje miejsca */
  .menu-gl {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 300px);
    flex-direction: column;
    justify-content: center;
    align-items: start;
    gap: 1.6rem;
    padding: 2rem;
    background: var(--tlo);
    border-left: 1px solid var(--linia);
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    z-index: 95;
  }
  .menu-gl.otwarte { transform: none; }
  .menu-gl a { font-size: 1.1rem; }
}

@media (max-width: 620px) {
  .siatka-3, .siatka-2, .plany, .liczby, .form-grid { grid-template-columns: 1fr; }
  .mock-kafle { grid-template-columns: 1fr; }
  .mock-wiersz { grid-template-columns: 1fr auto; gap: .5rem; }
  .mock-wiersz span:nth-child(3) { display: none; }
  .stopka__grid { grid-template-columns: 1fr; }
  .tabela-porownanie { font-size: .84rem; }
  .tabela-porownanie th, .tabela-porownanie td { padding: .7rem .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}