/* =============================================================
   NURT — wariant „Blueprint”
   Estetyka rysunku technicznego / teczki projektowej.
   Tokeny:
     --paper    #0f1f2d  tło — głęboki granat pruski (cyjanotypia)
     --panel    #142838  wyniesione arkusze / tabelki
     --grid     #24384a  linie pomocnicze, obramowania
     --ink      #eaf1f5  tusz — biel papieru
     --ink-dim  #a9bdcb  tusz wtórny (opisy)
     --redline  #ff5c38  czerwień korektorska — rewizje i wymiary
   Typografia: Archivo 700/500 (nagłówki, tekst), IBM Plex Mono
   400/500 (etykiety, dane, wymiarowanie).
   ============================================================= */

:root {
  --paper: #0f1f2d;
  --panel: #142838;
  --grid: #24384a;
  --ink: #eaf1f5;
  --ink-dim: #a9bdcb;
  --redline: #ff5c38;
  --mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;
  --grotesk: 'Archivo', system-ui, 'Segoe UI', sans-serif;
  --wrap: 1200px;
  --pad: clamp(20px, 4vw, 48px);
}

/* ---------- baza ---------- */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--grotesk);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
  /* siatka pomocnicza: moduł główny 128 px, podział 32 px */
  background-image:
    linear-gradient(rgba(234, 241, 245, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 241, 245, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(234, 241, 245, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 241, 245, 0.022) 1px, transparent 1px);
  background-size: 128px 128px, 128px 128px, 32px 32px, 32px 32px;
  overflow-x: clip;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3, p, ul, ol, figure, table { margin: 0; }

a { color: inherit; }

::selection {
  background: var(--redline);
  color: var(--paper);
}

:focus-visible {
  outline: 2px solid var(--redline);
  outline-offset: 3px;
}

[id] { scroll-margin-top: 96px; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---------- skip-link ---------- */

.skip-link {
  position: fixed;
  left: 20px;
  top: 20px;
  z-index: 200;
  transform: translateY(-200%);
  background: var(--redline);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  padding: 10px 16px;
}

.skip-link:focus {
  transform: none;
}

/* ---------- rama arkusza (dekoracja) ---------- */

.sheet-frame {
  position: fixed;
  inset: 12px;
  border: 1px solid var(--grid);
  pointer-events: none;
  z-index: 120;
}

.sheet-frame::before,
.sheet-frame::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  background:
    linear-gradient(var(--redline), var(--redline)) center / 100% 1px no-repeat,
    linear-gradient(var(--redline), var(--redline)) center / 1px 100% no-repeat;
}

.sheet-frame::before { top: -8px; left: -8px; }
.sheet-frame::after  { bottom: -8px; right: -8px; }

@media (max-width: 720px) {
  .sheet-frame { display: none; }
}

/* ---------- nagłówek ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 31, 45, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--grid);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .05em;
  color: var(--ink);
  text-decoration: none;
}

.brand span { color: var(--redline); }

.brand-mark {
  width: 26px;
  height: auto;
  filter: invert(1) brightness(0.96);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(14px, 2.5vw, 30px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-dim);
  padding: 6px 2px;
}

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

.nav a.nav-cta {
  color: var(--redline);
  border: 1px solid var(--redline);
  padding: 6px 14px;
}

.nav a.nav-cta:hover {
  background: var(--redline);
  color: var(--paper);
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(48px, 9vh, 104px) clamp(40px, 7vh, 80px);
  border-bottom: 1px solid var(--grid);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--redline);
  margin-bottom: 20px;
}

h1 {
  font-weight: 700;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.07;
  letter-spacing: -0.015em;
}

h1 em {
  font-style: normal;
  color: var(--redline);
  background: linear-gradient(var(--redline), var(--redline)) 0 96% / 100% 2px no-repeat;
  padding-bottom: 3px;
}

.lead {
  margin-top: 22px;
  color: var(--ink-dim);
  font-size: clamp(16px, 1.6vw, 19px);
  max-width: 46ch;
}

.hero-cta {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 24px;
  border: 1px solid var(--redline);
  background: var(--redline);
  color: var(--paper);
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.btn:hover {
  background: transparent;
  color: var(--redline);
}

.btn-line {
  background: transparent;
  border-color: var(--grid);
  color: var(--ink);
}

.btn-line:hover {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.hero-fig { margin: 0; }

.hero-fig .tf { border: 1px solid var(--grid); }

.dim-under { display: block; margin-top: 14px; }

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
}

/* ---------- warstwa techniczna zdjęć (sygnatura) ---------- */

.tf {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--panel);
}

.tf img { width: 100%; }

/* nakładka: siatka + linie wymiarowe (redline) */
.tf::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 92, 56, 0.85), rgba(255, 92, 56, 0.85)) 0 21% / 100% 1px no-repeat,
    linear-gradient(rgba(255, 92, 56, 0.85), rgba(255, 92, 56, 0.85)) 79% 0 / 1px 100% no-repeat,
    repeating-linear-gradient(to right, rgba(234, 241, 245, 0.26) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(to bottom, rgba(234, 241, 245, 0.26) 0 1px, transparent 1px 40px),
    rgba(15, 31, 45, 0.42);
  opacity: 0;
  transition: opacity .25s ease;
}

/* etykieta rysunku */
.tf::after {
  content: attr(data-rys);
  position: absolute;
  left: 10px;
  bottom: 10px;
  z-index: 2;
  pointer-events: none;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  line-height: 1;
  color: var(--ink);
  background: rgba(15, 31, 45, 0.9);
  border: 1px solid var(--grid);
  border-left: 2px solid var(--redline);
  padding: 6px 9px;
  opacity: 0;
  transition: opacity .25s ease;
}

@media (hover: hover) and (pointer: fine) {
  .tf img { transition: filter .25s ease; }
  .tf:hover img { filter: saturate(0.6) contrast(1.04); }
  .tf:hover::before,
  .tf:hover::after { opacity: 1; }
}

/* dotyk / brak hovera: dyskretna etykieta zawsze widoczna, bez warstwy */
@media (hover: none), (pointer: coarse) {
  .tf::after { opacity: .85; }
}

/* ---------- wymiarowanie / separatory ---------- */

.dim-wrap { margin-block: clamp(48px, 8vh, 88px); }

.dim-sep {
  position: relative;
  height: 28px;
}

.dim-sep svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  display: block;
}

.dim-sep line {
  stroke: var(--grid);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.dim-sep line.ext { stroke: var(--ink-dim); opacity: .55; }

.dim-sep line.main { stroke: var(--redline); }

/* znaczniki architektoniczne 45° na końcach linii */
.dim-sep .tick {
  position: absolute;
  top: 50%;
  width: 13px;
  height: 1px;
  background: var(--redline);
}

.tick-l { left: -6px; transform: translateY(-50%) rotate(-45deg); }
.tick-r { right: -6px; transform: translateY(-50%) rotate(-45deg); }

.dim-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  max-width: calc(100% - 48px);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  background: var(--paper);
  padding: 2px 14px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* ---------- nagłówki sekcji ---------- */

h2 {
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.sec-no {
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--redline);
  margin-bottom: 14px;
}

.sec-no::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--redline);
  vertical-align: middle;
  margin-right: 10px;
}

/* ---------- projekty ---------- */

.projects { padding-block: clamp(56px, 9vh, 104px) 0; }

.projects > .wrap > .dim-sep { margin-top: 34px; }

.project { padding-block: clamp(48px, 8vh, 88px); }

.project + .project { border-top: 1px solid var(--grid); }

.project-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 20px clamp(24px, 4vw, 56px);
  align-items: start;
  margin-bottom: 30px;
}

.project-no {
  font-family: var(--mono);
  font-weight: 500;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 0.95;
  color: rgba(169, 189, 203, 0.4);
}

@supports (-webkit-text-stroke: 1px #fff) {
  .project-no {
    color: transparent;
    -webkit-text-stroke: 1px rgba(169, 189, 203, 0.75);
  }
}

.project-no::before {
  content: "RYS.";
  display: block;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .22em;
  color: var(--redline);
  -webkit-text-stroke: 0;
  margin-bottom: 8px;
}

.project-head > div { color: var(--ink-dim); }

.sheet-meta {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 12px;
}

.project h3 {
  color: var(--ink);
  font-weight: 700;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.project-tags {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--redline);
  margin-bottom: 14px;
}

.project-head > div > p:last-child { max-width: 64ch; }

.gallery {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.gallery .tf { border: 1px solid var(--grid); }

@media (min-width: 560px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 920px) {
  .gallery { grid-template-columns: repeat(3, 1fr); }
}

/* widok główny (pierwszy rysunek arkusza) na całą szerokość */
.gallery .tf:first-child { grid-column: 1 / -1; }

@media (max-width: 640px) {
  .project-head { grid-template-columns: 1fr; gap: 16px; }
}

/* ---------- pracownia ---------- */

.studio {
  background: var(--panel);
  border-block: 1px solid var(--grid);
  padding-block: clamp(56px, 9vh, 104px);
}

.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.studio-logo {
  width: min(200px, 55%);
  height: auto;
  margin-top: 20px;
}

.big {
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.studio-grid > div > p:last-child { color: var(--ink-dim); }

@media (max-width: 820px) {
  .studio-grid { grid-template-columns: 1fr; }
}

/* ---------- proces ---------- */

.process { padding-block: clamp(56px, 9vh, 104px); }

.steps {
  list-style: none;
  margin-top: 44px;
  padding: 0;
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3vw, 40px);
}

.steps li {
  counter-increment: step;
  position: relative;
  border-top: 1px solid var(--grid);
  padding-top: 20px;
}

/* redline nad linią — znacznik fazy */
.steps li::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 40px;
  height: 1px;
  background: var(--redline);
}

.steps li::before {
  content: "FAZA " counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--redline);
  margin-bottom: 14px;
}

.steps h3 {
  font-weight: 700;
  font-size: 19px;
  margin-bottom: 8px;
}

.steps p {
  color: var(--ink-dim);
  font-size: 15px;
}

@media (max-width: 980px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}

/* ---------- kontakt ---------- */

.contact { padding-block: clamp(56px, 10vh, 120px); }

.contact-person {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 40px;
}

.contact-phone {
  display: block;
  width: fit-content;
  font-weight: 700;
  font-size: clamp(38px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  margin-top: 10px;
}

.contact-phone:hover { color: var(--redline); }

.contact-mail {
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(15px, 2vw, 18px);
  color: var(--redline);
  text-decoration: underline;
  text-underline-offset: 5px;
  margin-top: 14px;
}

.contact-mail:hover { color: var(--ink); }

/* tabelka rysunkowa z danymi */
.contact-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 52px;
  border: 1px solid var(--grid);
  background: var(--panel);
}

.contact-meta > div { padding: 22px 26px; }

.contact-meta > div + div { border-left: 1px solid var(--grid); }

.contact-meta h3 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--redline);
  margin-bottom: 10px;
}

.contact-meta p {
  color: var(--ink-dim);
  font-size: 15px;
}

@media (max-width: 640px) {
  .contact-meta { grid-template-columns: 1fr; }
  .contact-meta > div + div {
    border-left: 0;
    border-top: 1px solid var(--grid);
  }
}

/* tabelka rewizji */
.rev-table {
  width: 100%;
  margin-top: 28px;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
}

.rev-table th,
.rev-table td {
  border: 1px solid var(--grid);
  padding: 9px 14px;
  text-align: left;
  font-weight: 400;
}

.rev-table th {
  font-weight: 500;
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  background: var(--panel);
}

.rev-table tbody tr:last-child { color: var(--ink); }

.rev-table tbody tr:last-child td:first-child {
  color: var(--redline);
  font-weight: 500;
}

@media (max-width: 640px) {
  .rev-table { font-size: 11px; }
  .rev-table th,
  .rev-table td { padding: 7px 8px; }
}

/* ---------- stopka ---------- */

.site-footer {
  background: var(--panel);
  border-top: 1px solid var(--grid);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 32px;
  padding-block: 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-dim);
}

.footer-inner a {
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 2px;
}

.footer-inner a:hover {
  color: var(--ink);
  border-bottom-color: var(--redline);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
}

/* ---------- podstrony prawne ---------- */

.legal { padding-block: clamp(48px, 8vh, 96px); }

.legal .wrap { max-width: 860px; }

.legal .sec-no::before { background: var(--redline); }

.legal h1 {
  font-weight: 700;
  font-size: clamp(30px, 4.5vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}

.legal-meta {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--redline);
  border: 1px solid var(--grid);
  border-left: 2px solid var(--redline);
  background: var(--panel);
  padding: 7px 12px;
  margin: 12px 0 36px;
}

.legal h2 {
  font-size: 21px;
  letter-spacing: 0;
  border-top: 1px solid var(--grid);
  padding-top: 20px;
  margin: 40px 0 14px;
  position: relative;
}

.legal h2::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 40px;
  height: 1px;
  background: var(--redline);
}

.legal p,
.legal li {
  color: var(--ink-dim);
  font-size: 15.5px;
  margin-bottom: 14px;
}

.legal strong { color: var(--ink); font-weight: 700; }

.legal ul {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
}

.legal li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
}

.legal li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--redline);
}

.legal a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--redline);
  text-underline-offset: 3px;
}

.legal a:hover { color: var(--redline); }

/* ---------- animacje (tylko z JS i bez reduced-motion) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .js .reveal,
  .js .steps li {
    opacity: 0;
    transform: translateY(14px);
  }

  .js .reveal.in,
  .js .steps li.in {
    opacity: 1;
    transform: none;
    transition: opacity .6s ease, transform .6s ease;
  }

  .js .steps li:nth-child(2).in { transition-delay: .08s; }
  .js .steps li:nth-child(3).in { transition-delay: .16s; }
  .js .steps li:nth-child(4).in { transition-delay: .24s; }

  /* rysowanie linii wymiarowych (stroke-dashoffset) */
  .js .dim-sep line.main {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
  }

  .js .dim-sep.in line.main {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1.2s cubic-bezier(.4, 0, .2, 1) .1s;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}