/* ============================================
   PROBET – The Blueprint Aesthetic
   Industrial Design System
   ============================================ */

/* --- TOKENS --- */
:root {
  --carbon: #0F1115;
  --carbon-light: #1a1d24;
  --structural-gray: #E2E8F0;
  --structural-gray-mid: #94A3B8;
  --cold-concrete: #F8FAFC;
  --concrete-warm: #f6f7f9;
  --caution-yellow: #FACC15;
  --caution-yellow-hover: #EAB308;
  --signal-white: #FFFFFF;
  --text-dark: #111827;
  --text-light: #e5e7eb;
  --text-muted: #64748B;
  --border-light: #E2E8F0;
  --border-dark: #2a2d35;
  --shadow-card: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-card-hover: 0 10px 25px rgba(0,0,0,.12), 0 4px 10px rgba(0,0,0,.08);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', 'Fira Code', monospace;
  --radius: 2px;
  --radius-lg: 4px;
  --max-w: 1200px;
  --transition: 180ms ease;
}

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--signal-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }
.text-yellow { color: var(--caution-yellow); }
.text-muted { color: var(--text-muted); }

/* --- LAYOUT --- */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4rem 0; }
.section--dark { background: var(--carbon); color: var(--signal-white); }
.section--concrete { background: var(--cold-concrete); }
.section--warm { background: var(--concrete-warm); }
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .container { padding: 0 2rem; }
  .section { padding: 5rem 0; }
}
@media (min-width: 1200px) {
  .container { padding: 0 2.5rem; }
  .section { padding: 6rem 0; }
}

/* --- TOPBAR --- */
.topbar {
  background: var(--carbon);
  color: var(--structural-gray);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-dark);
}
.topbar .container { display: flex; justify-content: flex-end; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.topbar a { color: var(--structural-gray); transition: color var(--transition); display: inline-flex; align-items: center; gap: 0.375rem; }
.topbar a:hover { color: var(--caution-yellow); }
.topbar svg { width: 14px; height: 14px; flex-shrink: 0; }

/* --- HEADER --- */
.header { position: sticky; top: 0; z-index: 100; background: var(--carbon); border-bottom: 2px solid var(--caution-yellow); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--signal-white); letter-spacing: 0.05em; text-transform: uppercase; display: flex; align-items: center; gap: 0.5rem; }
.logo .accent { color: var(--caution-yellow); }

/* --- NAV --- */
.nav-list { display: flex; align-items: center; gap: 0; }
.nav-list a { color: var(--structural-gray); font-size: 0.875rem; font-weight: 500; padding: 0.5rem 1rem; text-transform: uppercase; letter-spacing: 0.04em; transition: color var(--transition), background var(--transition); position: relative; }
.nav-list a:hover, .nav-list a.active { color: var(--caution-yellow); }
.nav-list a::after { content: ''; position: absolute; bottom: 0; left: 1rem; right: 1rem; height: 2px; background: var(--caution-yellow); transform: scaleX(0); transition: transform var(--transition); }
.nav-list a:hover::after, .nav-list a.active::after { transform: scaleX(1); }

/* --- HAMBURGER --- */
.hamburger-toggle { display: none; }
.hamburger-label { display: none; cursor: pointer; width: 48px; height: 48px; align-items: center; justify-content: center; position: relative; z-index: 110; }
.hamburger-icon, .hamburger-icon::before, .hamburger-icon::after { display: block; width: 24px; height: 2px; background: var(--signal-white); transition: transform var(--transition), opacity var(--transition); }
.hamburger-icon { position: relative; }
.hamburger-icon::before, .hamburger-icon::after { content: ''; position: absolute; left: 0; }
.hamburger-icon::before { top: -7px; }
.hamburger-icon::after { top: 7px; }
.hamburger-toggle:checked ~ .hamburger-label .hamburger-icon { background: transparent; }
.hamburger-toggle:checked ~ .hamburger-label .hamburger-icon::before { transform: rotate(45deg); top: 0; background: var(--caution-yellow); }
.hamburger-toggle:checked ~ .hamburger-label .hamburger-icon::after { transform: rotate(-45deg); top: 0; background: var(--caution-yellow); }

@media (max-width: 959px) {
  .hamburger-label { display: flex; }
  .nav { position: fixed; top: 0; right: -100%; width: 80%; max-width: 320px; height: 100vh; background: var(--carbon); padding: 5rem 2rem 2rem; transition: right 0.3s ease; z-index: 105; border-left: 2px solid var(--caution-yellow); }
  .hamburger-toggle:checked ~ .nav { right: 0; }
  .nav-list { flex-direction: column; align-items: flex-start; gap: 0; }
  .nav-list a { display: block; padding: 0.75rem 0; font-size: 1rem; width: 100%; border-bottom: 1px solid var(--border-dark); }
  .nav-list a::after { display: none; }
  .nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 102; }
  .hamburger-toggle:checked ~ .nav-overlay { display: block; }
}

/* --- HERO --- */
.hero { position: relative; background: var(--carbon); color: var(--signal-white); overflow: hidden; min-height: 70vh; display: flex; align-items: center; }
.hero__bg { position: absolute; inset: 0; z-index: 1; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.3; }
.hero__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,17,21,0.92) 0%, rgba(15,17,21,0.7) 100%); z-index: 2; }
.hero__content { position: relative; z-index: 3; padding: 4rem 0; }
.hero h1 { margin-bottom: 1.25rem; max-width: 720px; }
.hero p { font-size: 1.125rem; color: var(--structural-gray); max-width: 560px; margin-bottom: 2rem; line-height: 1.7; }
.hero .mono { font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.1em; }

/* --- USP STRIP --- */
.usp-strip { background: var(--carbon-light); border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark); padding: 1rem 0; overflow: hidden; }
.usp-strip__inner { display: flex; align-items: center; gap: 2rem; font-family: var(--font-mono); font-size: 0.8125rem; color: var(--structural-gray-mid); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; animation: scroll-usp 20s linear infinite; }
.usp-strip__inner .sep { color: var(--caution-yellow); }
@keyframes scroll-usp { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .usp-strip__inner { animation: none; flex-wrap: wrap; white-space: normal; } }

/* --- BUTTONS --- */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-sans); font-weight: 600; font-size: 0.9375rem; padding: 0.875rem 1.75rem; border: none; cursor: pointer; text-transform: uppercase; letter-spacing: 0.04em; transition: background var(--transition), color var(--transition), transform var(--transition); clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px)); min-height: 48px; text-decoration: none; }
.btn--primary { background: var(--caution-yellow); color: var(--carbon); }
.btn--primary:hover { background: var(--caution-yellow-hover); transform: translateY(-1px); }
.btn--outline { background: transparent; color: var(--signal-white); border: 2px solid var(--structural-gray-mid); }
.btn--outline:hover { border-color: var(--caution-yellow); color: var(--caution-yellow); }
.btn--dark { background: var(--carbon); color: var(--signal-white); }
.btn--dark:hover { background: var(--carbon-light); }
.btn svg { width: 18px; height: 18px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, .btn:focus-visible { outline: 3px solid var(--caution-yellow); outline-offset: 4px; }

/* --- CARDS --- */
.card { background: var(--signal-white); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 1.75rem; transition: box-shadow var(--transition), transform var(--transition), background var(--transition), color var(--transition); box-shadow: var(--shadow-card); position: relative; }
.card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.card--interactive:hover { background: var(--carbon); color: var(--signal-white); }
.card--interactive:hover .card__title { color: var(--caution-yellow); }
.card--interactive:hover .card__icon svg { stroke: var(--caution-yellow); }
.card--interactive:hover .card__text { color: var(--structural-gray); }
.card--interactive:hover .card__link { color: var(--caution-yellow); }
.card__icon { width: 48px; height: 48px; margin-bottom: 1rem; display: flex; align-items: center; justify-content: center; }
.card__icon svg { width: 32px; height: 32px; stroke: var(--text-dark); stroke-width: 1.5; fill: none; transition: stroke var(--transition); }
.card__title { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.5rem; transition: color var(--transition); }
.card__text { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.6; transition: color var(--transition); }
.card__link { display: inline-flex; align-items: center; gap: 0.375rem; margin-top: 1rem; font-family: var(--font-mono); font-size: 0.8125rem; text-transform: uppercase; color: var(--text-dark); letter-spacing: 0.04em; transition: color var(--transition); }
.card__link svg { width: 14px; height: 14px; }
.card__link:hover { color: var(--caution-yellow); }
.card--dark { background: var(--carbon-light); border-color: var(--border-dark); color: var(--signal-white); }
.card--dark .card__icon svg { stroke: var(--caution-yellow); }
.card--dark .card__title { color: var(--signal-white); }
.card--dark .card__text { color: var(--structural-gray-mid); }

/* --- TIMELINE --- */
.timeline { position: relative; padding: 2rem 0; }
.timeline::before { content: ''; position: absolute; left: 23px; top: 0; bottom: 0; width: 2px; background: var(--caution-yellow); }
.timeline__item { position: relative; padding-left: 60px; padding-bottom: 2.5rem; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__marker { position: absolute; left: 8px; top: 4px; width: 32px; height: 32px; background: var(--caution-yellow); color: var(--carbon); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-weight: 700; font-size: 0.875rem; z-index: 2; }
.timeline__title { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.375rem; }
.timeline__text { color: var(--text-muted); font-size: 0.9375rem; }

@media (min-width: 960px) {
  .timeline { max-width: 700px; margin: 0 auto; }
  .timeline::before { left: 50%; transform: translateX(-50%); }
  .timeline__item { padding-left: 0; padding-bottom: 3rem; }
  .timeline__item:nth-child(odd) { padding-right: calc(50% + 40px); text-align: right; }
  .timeline__item:nth-child(even) { padding-left: calc(50% + 40px); }
  .timeline__marker { left: 50%; transform: translateX(-50%); }
}

/* --- SECTION HEADERS --- */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header .mono { font-size: 0.8125rem; color: var(--caution-yellow); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 0.75rem; display: block; }
.section-header h2 { margin-bottom: 1rem; }
.section-header p { max-width: 600px; margin: 0 auto; color: var(--text-muted); }
.section--dark .section-header p { color: var(--structural-gray-mid); }
.section--dark .section-header .mono { color: var(--caution-yellow); }
.measure-line { width: 60px; height: 2px; background: var(--caution-yellow); margin: 1rem auto; }
.measure-line--left { margin: 1rem 0; }

/* --- REALIZACJE --- */
.real-card { position: relative; overflow: hidden; border-radius: var(--radius); aspect-ratio: 4/3; background: var(--carbon); }
.real-card img { width: 100%; height: 100%; object-fit: cover; opacity: 0.6; transition: opacity var(--transition), transform 0.4s ease; }
.real-card:hover img { opacity: 0.35; transform: scale(1.03); }
.real-card__overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 1.5rem; z-index: 2; }
.real-card__tag { font-family: var(--font-mono); font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--caution-yellow); margin-bottom: 0.375rem; background: rgba(15,17,21,0.7); display: inline-block; padding: 0.25rem 0.5rem; position: absolute; top: 1rem; left: 1rem; }
.real-card__title { color: var(--signal-white); font-weight: 700; font-size: 1.25rem; margin-bottom: 0.375rem; }
.real-card__desc { color: var(--structural-gray); font-size: 0.875rem; line-height: 1.5; }

/* --- KONTAKT --- */
.contact-grid { gap: 2rem; }
.contact-info-item { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.5rem; }
.contact-info-item svg { width: 24px; height: 24px; stroke: var(--caution-yellow); stroke-width: 1.5; fill: none; flex-shrink: 0; margin-top: 0.125rem; }
.contact-info-item .label { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 0.25rem; }
.contact-info-item .value { font-weight: 600; font-size: 1rem; }
.contact-info-item a:hover { color: var(--caution-yellow); }

/* --- FORM --- */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 0.5rem; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border-light); border-radius: var(--radius); background: var(--signal-white); font-size: 1rem; color: var(--text-dark); transition: border-color var(--transition); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--caution-yellow); outline: none; box-shadow: 0 0 0 3px rgba(250,204,21,0.15); }
.form-group textarea { min-height: 140px; resize: vertical; }

/* --- FOOTER --- */
.footer { background: var(--carbon); color: var(--structural-gray); border-top: 2px solid var(--caution-yellow); }
.footer__main { padding: 3rem 0; display: grid; grid-template-columns: 1fr; gap: 2rem; }
.footer__brand .logo { margin-bottom: 1rem; }
.footer__brand p { font-size: 0.9375rem; color: var(--structural-gray-mid); max-width: 320px; line-height: 1.6; }
.footer__nav h4 { font-size: 0.8125rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--caution-yellow); margin-bottom: 1rem; }
.footer__nav ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__nav a { color: var(--structural-gray-mid); font-size: 0.9375rem; transition: color var(--transition); }
.footer__nav a:hover { color: var(--caution-yellow); }
.footer__bottom { border-top: 1px solid var(--border-dark); padding: 1.5rem 0; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; font-size: 0.8125rem; color: var(--structural-gray-mid); }
.footer address { font-style: normal; font-family: var(--font-mono); font-size: 0.8125rem; }

@media (min-width: 640px) { .footer__main { grid-template-columns: 2fr 1fr 1fr; } }
@media (min-width: 960px) { .footer__main { grid-template-columns: 2fr 1fr 1fr 1fr; } }

/* --- MISC --- */
@supports (content-visibility: auto) { .cv-auto { content-visibility: auto; contain-intrinsic-size: 0 500px; } }
.breadcrumb { padding: 0.75rem 0; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.breadcrumb a { transition: color var(--transition); }
.breadcrumb a:hover { color: var(--caution-yellow); }
.breadcrumb .sep { margin: 0 0.375rem; opacity: 0.5; }
.cta-banner { background: var(--carbon); padding: 3.5rem 0; text-align: center; color: var(--signal-white); }
.cta-banner h2 { margin-bottom: 1rem; }
.cta-banner p { color: var(--structural-gray-mid); margin-bottom: 2rem; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-banner .btn-group { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
@media (min-width: 960px) {
  .hero--split .hero__content { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: center; }
  .hero--split .hero__image { position: relative; border-left: 2px solid var(--caution-yellow); padding-left: 2rem; }
  .hero--split .hero__image img { border-radius: var(--radius); opacity: 0.8; }
}
.hero__image { display: none; }
@media (min-width: 960px) { .hero__image { display: block; } }
.offer-section { padding: 3rem 0; border-bottom: 1px solid var(--border-light); }
.offer-section:last-child { border-bottom: none; }
.offer-section__header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.offer-section__header svg { width: 36px; height: 36px; stroke: var(--caution-yellow); stroke-width: 1.5; fill: none; flex-shrink: 0; }
.offer-section__content { max-width: 720px; }
.offer-section__content p { color: var(--text-muted); margin-bottom: 1rem; }
.offer-section__content ul { margin-bottom: 1rem; }
.offer-section__content li { position: relative; padding-left: 1.25rem; margin-bottom: 0.5rem; color: var(--text-muted); }
.offer-section__content li::before { content: ''; position: absolute; left: 0; top: 0.5em; width: 8px; height: 2px; background: var(--caution-yellow); }
.values-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px) { .values-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .values-grid { grid-template-columns: repeat(3, 1fr); } }
.value-item { text-align: center; padding: 2rem 1.5rem; }
.value-item svg { width: 40px; height: 40px; stroke: var(--caution-yellow); stroke-width: 1.5; fill: none; margin: 0 auto 1rem; }
.value-item h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }
.value-item p { font-size: 0.9375rem; color: var(--text-muted); }
.area-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.area-tag { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; padding: 0.375rem 0.875rem; border: 1px solid var(--border-light); border-radius: var(--radius); color: var(--text-muted); }
.section--dark .area-tag { border-color: var(--border-dark); color: var(--structural-gray-mid); }
.stats-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; text-align: center; padding: 2rem 0; }
@media (min-width: 640px) { .stats-row { grid-template-columns: repeat(4, 1fr); } }
.stat-item .stat-number { font-size: 2.5rem; font-weight: 700; color: var(--caution-yellow); line-height: 1; margin-bottom: 0.375rem; font-family: var(--font-mono); }
.stat-item .stat-label { font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--structural-gray-mid); }
@media print { .header, .topbar, .hamburger-label, .nav-overlay { display: none; } .hero { min-height: auto; color: #000; background: #fff; } body { font-size: 12pt; color: #000; } }