/* =============================================
   CSS Custom Properties
   ============================================= */
:root {
  --color-primary: #1B3A6B;
  --color-accent: #2E6EA6;
  --color-accent-hover: #245d8e;
  --color-bg: #ffffff;
  --color-bg-alt: #F7F9FC;
  --color-text: #1A1A2E;
  --color-text-muted: #5a6378;
  --color-white: #ffffff;
  --color-footer-bg: #0F2447;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --container-width: 1200px;
  --container-padding: 1.5rem;

  --transition: 0.3s ease;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(27, 58, 107, 0.1);
  --shadow-hover: 0 8px 32px rgba(27, 58, 107, 0.18);
}

/* =============================================
   Reset & Base
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* =============================================
   Container
   ============================================= */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* =============================================
   Section shared
   ============================================= */
section { padding: 5rem 0; }
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); color: var(--color-primary); }

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline {
  border: 2px solid var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); }
.btn-full { width: 100%; justify-content: center; }

/* =============================================
   Scroll reveal animation
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   NAVBAR
   ============================================= */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 0.5rem 0;
}
#navbar.scrolled {
  background: var(--color-white);
  box-shadow: 0 2px 16px rgba(27,58,107,0.1);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.1em;
  transition: color var(--transition);
}
#navbar.scrolled .nav-logo-text {
  color: var(--color-primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-white);
  transition: color var(--transition);
  padding: 0.25rem 0;
  position: relative;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav-links a:hover::after, .nav-links a:focus::after { width: 100%; }
#navbar.scrolled .nav-links a { color: var(--color-text); }
.nav-cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: 6px;
}
#navbar.scrolled .nav-cta { background: var(--color-accent) !important; color: var(--color-white) !important; }
.nav-cta::after { display: none !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}
#navbar.scrolled .hamburger span { background: var(--color-text); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   HERO
   ============================================= */
#hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: linear-gradient(160deg, #0d1f3c 0%, #1B3A6B 50%, #0f2d5a 100%);
  overflow: hidden;
}
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 85%, rgba(46,110,166,0.35) 0%, transparent 55%),
    radial-gradient(circle at 85% 15%, rgba(46,110,166,0.25) 0%, transparent 55%),
    radial-gradient(circle at 50% 50%, rgba(27,58,107,0.2) 0%, transparent 70%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 5rem var(--container-padding) 3rem;
  animation: fadeUp 0.9s ease both;
}
.hero-logo {
  width: clamp(220px, 32vw, 420px);
  margin: 0 auto 2.5rem;
  filter: brightness(0) invert(1);
  opacity: 0.96;
  animation: fadeUp 0.9s 0.2s ease both;
}
#hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.85);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.scroll-down {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 1.5rem;
  z-index: 1;
}
.arrow-bounce {
  display: block;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =============================================
   STATS
   ============================================= */
#stats {
  background: var(--color-bg);
  border-top: 4px solid var(--color-accent);
  padding: 3.5rem 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-item { color: var(--color-primary); }
.stat-number {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.stat-suffix { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; color: var(--color-accent); }
.stat-item p { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.5rem; text-transform: uppercase; letter-spacing: 0.08em; }

/* =============================================
   O NAS
   ============================================= */
#about { background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--color-primary); margin-bottom: 1.25rem; }
.about-text p { color: var(--color-text-muted); margin-bottom: 1rem; }
.about-features { display: flex; flex-direction: column; gap: 1.25rem; }
.feature-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-bg-alt);
  padding: 1.25rem;
  border-radius: var(--radius);
  border-left: 3px solid var(--color-accent);
}
.feature-icon { color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.feature-card h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0.25rem; }
.feature-card p { font-size: 0.875rem; color: var(--color-text-muted); }

/* =============================================
   USŁUGI
   ============================================= */
#services { background: var(--color-bg-alt); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px; height: 72px;
  background: linear-gradient(135deg, rgba(27,58,107,0.08), rgba(46,110,166,0.1));
  border-radius: 16px;
  margin: 0 auto 1.25rem;
  color: var(--color-primary);
}
.service-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0.6rem; }
.service-card p { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.6; }

/* =============================================
   GALERIA
   ============================================= */
#gallery { background: var(--color-bg); }
.gallery-grid {
  columns: 3;
  column-gap: 1rem;
}
.gallery-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.gallery-item img {
  width: 100%;
  display: block;
  transition: transform 0.4s ease;
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(27,58,107,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  font-size: 2rem;
  color: white;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item:hover .gallery-overlay { opacity: 1; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 0 60px rgba(0,0,0,0.5);
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  color: white;
  font-size: 2.5rem;
  font-weight: 300;
  padding: 0.5rem 1rem;
  background: rgba(255,255,255,0.1);
  border-radius: 8px;
  transition: background var(--transition);
  line-height: 1;
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.2); }
.lightbox-close { top: 1.5rem; right: 1.5rem; }
.lightbox-prev { left: 1.5rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 1.5rem; top: 50%; transform: translateY(-50%); }

/* =============================================
   KONTAKT
   ============================================= */
#contact { background: var(--color-bg-alt); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}
.contact-info h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--color-primary); margin-bottom: 0.75rem; }
.contact-info > p { color: var(--color-text-muted); margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 1rem; }
.contact-details li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text-muted);
}
.contact-details li svg { color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.contact-details a { color: var(--color-primary); font-weight: 600; transition: color var(--transition); }
.contact-details a:hover { color: var(--color-accent); }

/* Form */
.contact-form-wrap {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
}
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
label { font-size: 0.875rem; font-weight: 600; color: var(--color-text); }
input, textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid #dde3ef;
  border-radius: 8px;
  font-family: var(--font-family);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(46,110,166,0.12);
}
textarea { resize: vertical; }
.form-status { margin-top: 0.75rem; font-size: 0.9rem; font-weight: 600; min-height: 1.2em; }
.form-status.success { color: #16a34a; }
.form-status.error { color: #dc2626; }

/* =============================================
   OPINIE
   ============================================= */
#testimonials { background: var(--color-bg-alt); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.stars { color: #f59e0b; font-size: 1.1rem; letter-spacing: 3px; }
.testimonial-card blockquote {
  color: var(--color-text-muted);
  font-size: 0.925rem;
  line-height: 1.75;
  font-style: italic;
  flex: 1;
  margin: 0;
}
.testimonial-author { border-top: 1px solid #edf0f7; padding-top: 1rem; }
.testimonial-author strong { display: block; color: var(--color-primary); font-size: 0.95rem; }
.testimonial-author span { font-size: 0.8rem; color: var(--color-text-muted); }

/* =============================================
   FOOTER
   ============================================= */
#footer {
  background: var(--color-footer-bg);
  padding: 2.5rem 0 1.5rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 1.25rem;
}
.footer-logo-img {
  height: 60px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}
.footer-nav { display: flex; gap: 1.75rem; }
.footer-nav a { color: rgba(255,255,255,0.7); font-size: 0.9rem; transition: color var(--transition); }
.footer-nav a:hover { color: var(--color-white); }
.footer-fb { color: rgba(255,255,255,0.7); transition: color var(--transition); }
.footer-fb:hover { color: #4267B2; }
.footer-copy { text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.4); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .testimonials-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.5rem;
    box-shadow: var(--shadow);
    transform: translateY(-110%);
    transition: transform var(--transition);
    z-index: 999;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { color: var(--color-text) !important; padding: 0.6rem 0; width: 100%; }
  .nav-cta { display: inline-flex !important; width: fit-content !important; }
  .hamburger { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .gallery-grid { columns: 2; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  section { padding: 3.5rem 0; }
  .gallery-grid { columns: 1; }
  .hero-btns { flex-direction: column; align-items: center; }
  .contact-form-wrap { padding: 1.5rem; }
}