/* ============================================================
   GloriART — Global Styles
   Dark, premium, modern portfolio for Emil Simunovic
   ============================================================ */

/* Fonts are loaded via <link> elements in each HTML page's <head>
   to avoid @import race conditions with display=swap.
   See: https://developer.chrome.com/blog/font-optimal-loading/ */

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Container */
  --container-max: 1440px;
  --page-gutter: clamp(20px, 3vw, 48px);
  --reading-width: 750px;

  /* Backgrounds */
  --bg-primary: #000000;
  --bg-after-hero: #05080A;
  --bg-section: #06080A;
  --bg-card: #0C0F14;
  --bg-card-hover: #11141A;
  --divider: #0F1114;

  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #A0A8B8;
  --text-muted: #6B7280;

  /* Accent */
  --accent: #5B9AFF;
  --accent-hover: #8BA9FF;
  --accent-dim: rgba(91, 154, 255, 0.12);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(91, 154, 255, 0.25);

  /* Typography */
  --font-heading: 'Bebas Neue', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Rajdhani', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading-alt: 'Rajdhani', 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* UI tokens */
  --radius: 4px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-y: scroll;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-width: 0;
}

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

.hero-bg img {
  max-width: none;
}

/* ============================================================
   LINKS
   ============================================================ */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  padding: 8px 16px;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
  z-index: 10000;
  border-radius: var(--radius);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 16px;
}

/* ============================================================
   LAYOUT CONTAINERS
   ============================================================ */
.site-section {
  width: 100%;
}

.site-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.reading-width {
  max-width: var(--reading-width);
}

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */

/* --- Header overlay on hero pages --- */
body.hero-page .site-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
  background: rgba(0, 0, 0, 0.8);
  border: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.hero-page .site-header::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--divider) 0%, var(--divider) 40%, transparent 70%);
}

body.hero-page .header-inner {
  height: 64px;
}

.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  justify-content: space-between;
}

/* --- Logo --- */
.site-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  text-decoration: none;
}

.site-logo__name {
  font-family: var(--font-heading-alt);
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.site-logo__name .accent {
  color: var(--accent);
}

.site-logo__tagline {
  font-family: var(--font-body);
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}

.main-nav .header-cta {
  display: none;
}

.main-nav > ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile-only overlay — hidden on desktop */
.mobile-nav-overlay {
  display: none;
}

/* --- Header CTA --- */
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--transition);
  background: transparent;
  margin-left: 20px;
  cursor: pointer;
}

.header-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.header-cta svg {
  width: 16px;
  height: 16px;
}

/* --- Mobile Menu Toggle --- */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all var(--transition);
}

/* ============================================================
   SHARED BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn--primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(91, 154, 255, 0.3);
}

.btn--outline {
  background: rgba(0, 0, 0, 0.8);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 0, 0, 1);
  transform: translateY(-2px);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ============================================================
   SHARED HERO ACTIONS (buttons container)
   ============================================================ */
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 20px;
}

@media (max-width: 600px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

/* ============================================================
   SHARED SECTION HEADERS
   ============================================================ */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-heading-alt);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap var(--transition);
}

.section-link:hover {
  gap: 12px;
}

.section-link svg {
  width: 16px;
  height: 16px;
}

/* ============================================================
   SHARED CARDS
   ============================================================ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.project-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.project-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__body {
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card__number {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.project-card__title {
  font-family: var(--font-heading-alt);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-card__desc {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  font-weight: 400;
}

.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}

.project-card__years {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.project-card__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-accent);
  border-radius: 50%;
  color: var(--accent);
  transition: all var(--transition);
}

.project-card:hover .project-card__arrow {
  background: var(--accent);
  color: var(--bg-primary);
}

.project-card__arrow svg {
  width: 16px;
  height: 16px;
}

/* ============================================================
   SHARED BRAND / STATISTICS
   ============================================================ */
.brand-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0;
}

.brand-strip-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}

.brand-logos {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.brand-logo {
  opacity: 0.75;
  transition: opacity var(--transition);
}

.brand-logo:hover {
  opacity: 1;
}

.brand-logo img {
  height: 28px;
  width: auto;
}

.brand-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 0 24px;
  position: relative;
  text-align: center;
}

.stat:first-child {
  padding-left: 0;
}

.stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-subtle);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: 0.02em;
  display: inline;
}

.stat-value .accent {
  color: #fff;
}

.stat-value-plus {
  font-family: var(--font-heading);
  font-size: 0.7em;
  color: var(--accent);
  vertical-align: baseline;
  margin-left: 1px;
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.4;
}

/* ============================================================
   SHARED FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg-primary);
  padding: 40px 0;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--divider) 0%, var(--divider) 40%, transparent 70%);
  opacity: 0.3;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

.footer-credit {
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.6;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-link:hover {
  color: var(--accent);
}

/* ============================================================
   RESPONSIVE BASE
   ============================================================ */
@media (max-width: 1024px) {
  .brand-strip-inner {
    gap: 24px;
  }

  .brand-stats {
    justify-content: flex-start;
  }

  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Navigation */
  .main-nav {
    display: none !important;
  }

  .header-inner {
    justify-content: space-between;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .header-cta {
    display: none;
  }

  /* Overlay — hidden by default, shown via .open */
  .mobile-nav-overlay {
    display: none;
  }

  .mobile-nav-overlay.open {
    display: flex;
    position: fixed;
    inset: 0;
    top: 64px;
    background: rgba(9, 11, 15, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 99;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 48px 24px 40px;
    gap: 0;
  }

  .mobile-nav-overlay.open .mobile-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 400px;
    gap: 0;
  }

  .mobile-nav-overlay.open .mobile-nav-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
  }

  .mobile-nav-overlay.open .mobile-nav-link {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: color var(--transition);
    text-align: center;
    width: 100%;
    position: relative;
  }

  .mobile-nav-overlay.open .mobile-nav-list li:not(:last-child)::after {
    content: '';
    display: block;
    width: 60%;
    height: 1px;
    background: var(--border-subtle);
    margin: 16px auto 0;
  }

  .mobile-nav-overlay.open .mobile-nav-link:hover,
  .mobile-nav-overlay.open .mobile-nav-link[aria-current="page"] {
    color: var(--accent);
  }

  .mobile-nav-overlay.open .mobile-cta {
    display: flex;
    justify-content: center;
    margin-top: 32px;
    padding: 14px 24px;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .mobile-nav-overlay {
    position: fixed;
    inset: 0;
    top: 64px;
    background: rgba(9, 11, 15, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 99;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 48px 24px 40px;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    overflow-y: auto;
  }

  .mobile-nav-overlay.open {
    transform: translateX(0);
  }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 360px;
    gap: 0;
  }

  .mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
  }

  .mobile-nav-link {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: color var(--transition);
    text-align: center;
    width: 100%;
    position: relative;
  }

  .mobile-nav-list li:not(:last-child)::after {
    content: '';
    display: block;
    width: 60%;
    height: 1px;
    background: var(--border-subtle);
    margin: 16px auto 0;
  }

  .mobile-nav-link:hover,
  .mobile-nav-link[aria-current="page"] {
    color: var(--accent);
  }

  .header-cta {
    display: none;
  }

  .mobile-cta {
    display: none;
    justify-content: center;
    margin-top: 32px;
    padding: 14px 24px;
    width: 100%;
  }

  .mobile-nav-overlay.open .mobile-cta {
    display: flex;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
}

/* Reduced motion */
@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;
  }
}