/* ============================================================
   1. CSS CUSTOM PROPERTIES (design tokens)
   ============================================================ */
:root {
  --color-primary:     #1843F1;
  --color-accent:      #FFD00A;
  --color-bg:          #000000;
  --color-bg-alt:      #0a0a0a;
  --color-bg-card:     #111111;
  --color-bg-section:  #00102E;
  --color-text:        #ffffff;
  --color-text-muted:  #a0a0a0;
  --color-border:      #222222;

  --font-heading: 'Manrope', sans-serif;
  --font-body:    'Inter', sans-serif;

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 8px 40px rgba(24, 67, 241, 0.25);

  --nav-height:  96px;
  --max-width:   1200px;
  --max-width-sm: 740px;
  --section-gap: 96px;
  --section-gap-sm: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.625rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

p:last-child { margin-bottom: 0; }

.text-accent  { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted   { color: var(--color-text-muted); }
.text-white   { color: var(--color-text); }
.text-center  { text-align: center; }
.text-upper   { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8125rem; font-weight: 600; }

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container--sm {
  max-width: var(--max-width-sm);
}

.section {
  padding: var(--section-gap) 0;
}

.section--alt {
  background-color: var(--color-bg-alt);
}

.section--dark {
  background-color: var(--color-bg-section);
}

.section-header {
  margin-bottom: 56px;
}

.section-header .label {
  display: inline-block;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 560px;
}

.section-header.center {
  text-align: center;
}

.section-header.center p {
  margin-left: auto;
  margin-right: auto;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

/* ============================================================
   5. HEADER & NAVIGATION
   ============================================================ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: #000;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.site-header.header-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.site-logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  line-height: 1.1;
  flex-shrink: 0;
}

.logo-img {
  height: 80px;
  width: auto;
  display: block;
}

.site-logo .logo-text {
  display: flex;
  flex-direction: column;
}

.site-logo .logo-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.site-logo .logo-subtitle {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background-color 0.2s;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link--active {
  color: var(--color-accent);
}

.nav-cta {
  margin-left: 8px;
  background-color: var(--color-primary);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  transition: background-color 0.2s;
}

.nav-cta:hover {
  background-color: #0f2fa8;
  color: #fff !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 6px;
  cursor: pointer;
  z-index: 1001;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   6. HERO (full-viewport homepage)
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh; /* fallback za browsere bez dvh podrške */
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden; /* seče pozadinsku traku slika da ne izlazi iz heroja */
  background-color: #000; /* fallback dok se prva slika ne učita */
  padding-top: var(--nav-height);
}

/* Pozadinska traka fotografija — puna širina/visina heroja, iza teksta */
.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 1s ease;
}

.hero-carousel-item {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
}

.hero-carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Tamni sloj preko slika — isti gradijent koji je ranije bio direktno
   na .hero pozadini, sad odvojen da sedi IZMEĐU slika i teksta */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 16, 0.8));
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2; /* iznad slika i tamnog sloja */
}

.hero-content {
  max-width: 760px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.hero-label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent);
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--color-text);
}

.hero h1 span {
  color: var(--color-accent);
}

.hero-desc {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 540px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  z-index: 2; /* iznad pozadinske trake slika */
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}

.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   7. PAGE HERO (shorter banner for inner pages)
   ============================================================ */
.page-hero {
  background: linear-gradient(135deg, #000510 0%, #00102E 60%, #0a0a0a 100%);
  padding: calc(var(--nav-height) + 56px) 0 56px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(24, 67, 241, 0.15) 0%, transparent 65%);
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-family: var(--font-heading);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-accent);
}

.page-hero h1 {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero .page-hero-desc {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  max-width: 520px;
}

/* ============================================================
   8. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: #0f2fa8;
  border-color: #0f2fa8;
  color: #fff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #000;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: #e6bb00;
  border-color: #e6bb00;
  color: #000;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1rem;
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ============================================================
   9. CARDS (generic)
   ============================================================ */
.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.card:hover {
  border-color: rgba(24, 67, 241, 0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

/* ============================================================
   10. FEATURE CARDS (icon + title + description)
   ============================================================ */
.feature-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.feature-card:hover {
  border-color: rgba(24, 67, 241, 0.5);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(24, 67, 241, 0.2), rgba(24, 67, 241, 0.05));
  border: 1px solid rgba(24, 67, 241, 0.3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--color-text);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============================================================
   11. COURSE CARDS
   ============================================================ */
.course-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.course-card:hover {
  border-color: rgba(24, 67, 241, 0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.course-card-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--color-border);
}

.course-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.badge-intro    { background: rgba(255, 208, 10, 0.15); color: var(--color-accent); border: 1px solid rgba(255, 208, 10, 0.3); }
.badge-advanced { background: rgba(24, 67, 241, 0.15);  color: #7b9fff;             border: 1px solid rgba(24, 67, 241, 0.3); }
.badge-tech     { background: rgba(0, 200, 150, 0.12);  color: #00c896;             border: 1px solid rgba(0, 200, 150, 0.3); }
.badge-special  { background: rgba(200, 80, 255, 0.12); color: #c850ff;             border: 1px solid rgba(200, 80, 255, 0.3); }

.course-card-header h3 {
  font-size: 1.1875rem;
  margin-bottom: 8px;
}

.course-card-header p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

.course-card-body {
  padding: 24px 28px;
  flex: 1;
}

.course-card-body ul {
  margin-bottom: 0;
}

.course-card-body ul li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 5px 0;
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.course-card-body ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.75rem;
  top: 7px;
}

.course-card-footer {
  padding: 20px 28px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--color-border);
}

.course-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
}

.course-meta strong {
  display: block;
  color: var(--color-text);
  font-size: 0.9rem;
  margin-bottom: 2px;
}

/* ============================================================
   12. GALLERY GRID & LIGHTBOX
   ============================================================ */
.gallery-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.gallery-filter-btn {
  padding: 8px 20px;
  border-radius: 24px;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.gallery-filter-btn:hover,
.gallery-filter-btn.active {
  color: var(--color-text);
  border-color: var(--color-primary);
  background-color: rgba(24, 67, 241, 0.1);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  align-items: flex-end;
  padding: 16px;
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item-caption {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
}

.gallery-item.hidden {
  display: none;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: fixed;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
  border: 1px solid rgba(255,255,255,0.15);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

.lightbox-caption {
  text-align: center;
  margin-top: 16px;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
}

/* ============================================================
   13. DOCUMENT LIST
   ============================================================ */
.doc-category {
  margin-bottom: 48px;
}

.doc-category-title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.doc-item:hover {
  border-color: rgba(24, 67, 241, 0.4);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.doc-icon {
  width: 40px;
  height: 40px;
  background: rgba(24, 67, 241, 0.12);
  border: 1px solid rgba(24, 67, 241, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.125rem;
}

.doc-info {
  flex: 1;
  min-width: 0;
}

.doc-name {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.doc-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.doc-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  flex-shrink: 0;
  text-align: right;
}

.doc-download {
  flex-shrink: 0;
}

/* ============================================================
   14. CONTACT FORM & INFO CARDS
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  background: rgba(24, 67, 241, 0.12);
  border: 1px solid rgba(24, 67, 241, 0.25);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-card-body h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.contact-card-body a,
.contact-card-body p {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0;
  line-height: 1.5;
  transition: color 0.2s;
}

.contact-card-body a:hover {
  color: var(--color-accent);
}

.contact-form-wrap {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form-wrap h3 {
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group label .required {
  color: #ff4d6d;
  margin-left: 3px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.9375rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(24, 67, 241, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-error {
  font-size: 0.8125rem;
  color: #ff4d6d;
  margin-top: 4px;
  display: none;
}

.form-error.visible { display: block; }

.form-success {
  background: rgba(0, 200, 100, 0.1);
  border: 1px solid rgba(0, 200, 100, 0.3);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  text-align: center;
  color: #00c864;
  font-family: var(--font-heading);
  font-weight: 600;
  display: none;
}

.form-success.visible { display: block; }

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.social-link {
  width: 44px;
  height: 44px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--color-text-muted);
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
  text-decoration: none;
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: rgba(255, 208, 10, 0.05);
}

/* ============================================================
   15. FOOTER
   ============================================================ */
.site-footer {
  background-color: #050505;
  border-top: 1px solid var(--color-border);
}

.footer-main {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .footer-logo-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
}

.footer-brand .footer-logo-sub {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: var(--font-body);
  display: block;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 280px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 20px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color 0.2s, padding-left 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-nav a::before {
  content: '›';
  color: var(--color-primary);
  font-size: 1rem;
}

.footer-nav a:hover {
  color: var(--color-text);
  padding-left: 4px;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer-contact-item .icon {
  color: var(--color-primary);
  font-size: 1rem;
  margin-top: 1px;
  flex-shrink: 0;
}

.footer-contact-item a {
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer-contact-item a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom-text {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer-bottom-links a:hover {
  color: var(--color-accent);
}

/* ============================================================
   16. BACK-TO-TOP BUTTON
   ============================================================ */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 16px rgba(24, 67, 241, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.2s, background-color 0.2s;
  z-index: 900;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#back-to-top:hover {
  background-color: #0f2fa8;
  transform: translateY(-3px);
}

/* ============================================================
   17. SPECIFIC PAGE SECTIONS
   ============================================================ */

/* About section (two-column) */
.about-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-two-col.reverse {
  direction: rtl;
}

.about-two-col.reverse > * {
  direction: ltr;
}

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.about-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-img-accent {
  position: absolute;
  bottom: -1px;
  left: -1px;
  right: -1px;
  height: 4px;
  background: linear-gradient(to right, var(--color-primary), var(--color-accent));
}

.about-text .label {
  display: inline-block;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* Steps / process */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-primary), var(--color-primary), transparent);
  opacity: 0.4;
}

.step-item {
  text-align: center;
  padding: 0 16px;
}

.step-number {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary), #0f2fa8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 24px;
  box-shadow: 0 4px 20px rgba(24, 67, 241, 0.35);
  position: relative;
  z-index: 1;
}

.step-item h3 {
  font-size: 1.0625rem;
  margin-bottom: 10px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Team cards */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.team-card:hover {
  border-color: rgba(24, 67, 241, 0.4);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.team-card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background-color: #1a1a2e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-primary);
}

.team-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card-body {
  padding: 20px 20px 24px;
}

.team-card-body h4 {
  font-size: 1.0625rem;
  margin-bottom: 4px;
}

.team-card-cert {
  font-size: 0.8125rem;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  margin-bottom: 10px;
  display: block;
}

.team-card-bio {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0f2fa8 50%, #00102E 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(255,208,10,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.625rem, 3.5vw, 2.375rem);
  margin-bottom: 16px;
  position: relative;
}

.cta-banner p {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 520px;
  margin: 0 auto 36px;
  position: relative;
}

.cta-banner .btn {
  position: relative;
}

/* Pull quote */
.pull-quote {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: 0 24px;
}

.pull-quote blockquote {
  font-family: var(--font-heading);
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 24px;
}

.pull-quote blockquote::before {
  content: '"';
  display: block;
  font-size: 4rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: -16px;
  font-family: Georgia, serif;
}

/* Stat counters */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-item {
  background-color: var(--color-bg-card);
  padding: 32px 24px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* 404 page */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.error-code {
  font-family: var(--font-heading);
  font-size: clamp(6rem, 15vw, 10rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.3;
  margin-bottom: -16px;
}

.error-page h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 16px;
}

.error-page p {
  max-width: 400px;
  margin: 0 auto 32px;
}

/* ============================================================
   18. UTILITIES
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

/* ============================================================
   19. MEDIA QUERIES
   ============================================================ */

/* Tablet: ≤ 1024px */
@media (max-width: 1024px) {
  :root {
    --section-gap: 72px;
  }

  .grid-4  { grid-template-columns: repeat(2, 1fr); }
  .grid-3  { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main > :first-child { grid-column: 1 / -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 28px; }
}

/* Mobile: ≤ 768px */
@media (max-width: 768px) {
  :root {
    --section-gap: 56px;
    --nav-height: 60px;
  }

  .logo-img { height: 44px; }

  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background-color: #000;
    border-top: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    transform: translateY(-100vh);
    transition: transform 0.3s ease;
    z-index: 999;
    box-shadow: 0 8px 24px rgba(0,0,0,0.8);
  }

  .site-nav.nav-open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    width: 100%;
    text-align: left;
  }

  .nav-link:hover,
  .nav-link--active {
    background-color: rgba(24, 67, 241, 0.08);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

  .grid-2,
  .grid-3    { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps-grid::before { display: none; }
  .about-two-col { grid-template-columns: 1fr; gap: 32px; }
  .about-two-col.reverse { direction: ltr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-main > :first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .cta-banner { padding: 56px 0; }
  .contact-form-wrap { padding: 24px 20px; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

/* Small mobile: ≤ 480px */
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-filters { gap: 6px; }
  .gallery-filter-btn { padding: 6px 14px; font-size: 0.8125rem; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .doc-item { flex-wrap: wrap; }
  .doc-meta { display: none; }
}

/* Touch uređaji: nema pravog hover-a — overlay uvek vidljiv */
@media (hover: none) {
  .gallery-item-overlay {
    opacity: 1;
  }
}