/* =========================================================
   ZahoCon — Production Stylesheet
   Design System: Navy / Teal / Gold
   ========================================================= */

/* ---------------------------------------------------------
   1. CSS Custom Properties
   --------------------------------------------------------- */
:root {
  --color-primary:        #0A2240;
  --color-primary-dark:   #061628;
  --color-primary-light:  #1A3A5C;
  --color-accent:         #1A7F8E;
  --color-accent-hover:   #15697A;
  --color-accent-gold:    #C9A84C;
  --color-bg:             #F8F9FB;
  --color-surface:        #FFFFFF;
  --color-surface-alt:    #EEF2F7;
  --color-text-primary:   #0D1B2A;
  --color-text-secondary: #4A5568;
  --color-text-muted:     #8A9BB0;
  --color-text-inverse:   #FFFFFF;
  --color-border:         #D9E2EC;
  --color-border-strong:  #B8C9DC;

  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif:  'Playfair Display', Georgia, 'Times New Roman', serif;

  --nav-height: 72px;

  --container-max:          1200px;
  --container-px-mobile:    24px;
  --container-px-tablet:    40px;
  --container-px-desktop:   80px;

  --section-py-mobile:  60px;
  --section-py-tablet:  80px;
  --section-py-desktop: 100px;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 3px rgba(10,34,64,0.08), 0 1px 2px rgba(10,34,64,0.06);
  --shadow-md:  0 4px 16px rgba(10,34,64,0.10), 0 2px 6px rgba(10,34,64,0.06);
  --shadow-lg:  0 12px 40px rgba(10,34,64,0.14), 0 4px 16px rgba(10,34,64,0.08);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ---------------------------------------------------------
   2. Reset & Base
   --------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}

/* ---------------------------------------------------------
   3. Container
   --------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--container-px-tablet);
  }
}

@media (min-width: 1200px) {
  .container {
    padding-inline: var(--container-px-desktop);
  }
}

/* ---------------------------------------------------------
   4. Typography
   --------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
}

h3 {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

h4 {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-inverse);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ---------------------------------------------------------
   5. Buttons
   --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--transition-base),
              color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base),
              transform var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

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

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 4px 16px rgba(26,127,142,0.35);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255,255,255,0.50);
}

.btn-ghost:hover {
  border-color: var(--color-text-inverse);
  background-color: rgba(255,255,255,0.08);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

/* ---------------------------------------------------------
   6. Section Headers
   --------------------------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

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

.section-lead {
  max-width: 560px;
  margin-inline: auto;
  color: var(--color-text-secondary);
}

.section-lead-light {
  color: rgba(255,255,255,0.70);
}

/* ---------------------------------------------------------
   7. Animate-In
   --------------------------------------------------------- */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  /* CSS fallback: ak JS neprebehne, obsah sa odkryje po 2s */
  animation: revealFallback 0s 2s forwards;
}

@keyframes revealFallback {
  to { opacity: 1; transform: none; }
}

.animate-in.visible {
  opacity: 1;
  transform: none;
  animation: none; /* zruší fallback keď JS funguje */
}

.services-grid .service-card:nth-child(1),
.engagement-grid .engagement-card:nth-child(1) { transition-delay: 0ms; }
.services-grid .service-card:nth-child(2),
.engagement-grid .engagement-card:nth-child(2) { transition-delay: 80ms; }
.services-grid .service-card:nth-child(3),
.engagement-grid .engagement-card:nth-child(3) { transition-delay: 160ms; }
.services-grid .service-card:nth-child(4),
.engagement-grid .engagement-card:nth-child(4) { transition-delay: 240ms; }
.services-grid .service-card:nth-child(5) { transition-delay: 320ms; }
.services-grid .service-card:nth-child(6) { transition-delay: 400ms; }

.stats-grid .stat-item:nth-child(1) { transition-delay: 0ms; }
.stats-grid .stat-item:nth-child(2) { transition-delay: 100ms; }
.stats-grid .stat-item:nth-child(3) { transition-delay: 200ms; }
.stats-grid .stat-item:nth-child(4) { transition-delay: 300ms; }

.timeline-item:nth-child(1) { transition-delay: 0ms; }
.timeline-item:nth-child(2) { transition-delay: 80ms; }
.timeline-item:nth-child(3) { transition-delay: 160ms; }
.timeline-item:nth-child(4) { transition-delay: 240ms; }
.timeline-item:nth-child(5) { transition-delay: 320ms; }

/* ---------------------------------------------------------
   8. Navigation
   --------------------------------------------------------- */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

#main-nav.scrolled {
  background-color: var(--color-surface);
  box-shadow: 0 2px 16px rgba(10,34,64,0.10);
}

.nav-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px-mobile);
  display: flex;
  align-items: center;
  gap: 32px;
}

@media (min-width: 768px) {
  .nav-container {
    padding-inline: var(--container-px-tablet);
  }
}

@media (min-width: 1200px) {
  .nav-container {
    padding-inline: var(--container-px-desktop);
  }
}

.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo-main {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-inverse);
  letter-spacing: 0.04em;
  transition: color var(--transition-base);
}

#main-nav.scrolled .nav-logo-main {
  color: var(--color-primary);
}

.nav-logo-sub {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-links {
  display: none;
  flex: 1;
  gap: 4px;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
    align-items: center;
  }
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--color-text-inverse);
  background-color: rgba(255,255,255,0.08);
}

#main-nav.scrolled .nav-links a {
  color: var(--color-text-secondary);
}

#main-nav.scrolled .nav-links a:hover {
  color: var(--color-primary);
  background-color: var(--color-surface-alt);
}

.nav-right {
  display: none;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

@media (min-width: 1024px) {
  .nav-right {
    display: flex;
  }
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-btn {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255,255,255,0.60);
  padding: 4px 2px;
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--color-text-inverse);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 3px;
}

#main-nav.scrolled .lang-btn {
  color: var(--color-text-muted);
}

#main-nav.scrolled .lang-btn:hover,
#main-nav.scrolled .lang-btn.active {
  color: var(--color-primary);
}

.lang-divider {
  color: rgba(255,255,255,0.30);
  font-size: 0.8125rem;
  user-select: none;
}

#main-nav.scrolled .lang-divider {
  color: var(--color-border-strong);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.nav-cta:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(26,127,142,0.35);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.hamburger:hover {
  background-color: rgba(255,255,255,0.10);
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-inverse);
  border-radius: 2px;
  transform-origin: center;
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

#main-nav.scrolled .hamburger-line {
  background-color: var(--color-primary);
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
  width: 0;
}
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background-color: var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.mobile-nav-links a {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  padding: 8px 24px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.mobile-nav-links a:hover {
  color: var(--color-text-inverse);
  background-color: rgba(255,255,255,0.08);
}

.mobile-lang-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-lang-switcher .lang-btn {
  font-size: 1rem;
}

.mobile-cta {
  font-size: 1rem;
  padding: 13px 32px;
}

/* Hero elements animate via CSS keyframes, independent of JS observer */
.hero-section .animate-in,
.hero-section .animate-in.visible {
  opacity: 1;
  transform: none;
  animation: heroFadeIn 0.7s ease both;
}

.hero-content.animate-in,
.hero-content.animate-in.visible { animation-delay: 0.1s; }

.hero-availability-card.animate-in,
.hero-availability-card.animate-in.visible { animation-delay: 0.35s; }

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* ---------------------------------------------------------
   9. Hero
   --------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0A2240 0%, #1A3A5C 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Geometric CSS pattern */
.hero-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-pattern::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,127,142,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-pattern::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding-top: 80px;
  padding-bottom: 100px;
}

.hero-content {
  max-width: 680px;
  flex: 1;
}

.hero-overline {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 20px;
}

.hero-title {
  color: var(--color-text-inverse);
  margin-bottom: 24px;
}

.hero-lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.80);
  margin-bottom: 40px;
  max-width: 560px;
}

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

/* Floating availability card */
.hero-availability-card {
  display: none;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  flex-shrink: 0;
  margin-bottom: 8px;
}

@media (min-width: 1024px) {
  .hero-availability-card {
    display: flex;
  }
}

.availability-dot-wrapper {
  position: relative;
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.availability-dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #34D399;
}

.availability-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background-color: rgba(52,211,153,0.25);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0; }
}

.availability-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-inverse);
  line-height: 1.3;
}

.availability-sub {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.60);
  line-height: 1.3;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  color: rgba(255,255,255,0.60);
  animation: bounce-scroll 2s ease-in-out infinite;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  z-index: 2;
}

.scroll-indicator:hover {
  color: var(--color-text-inverse);
  border-color: rgba(255,255,255,0.60);
}

@keyframes bounce-scroll {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(5px); }
}

/* ---------------------------------------------------------
   10. Stats Bar
   --------------------------------------------------------- */
.stats-section {
  background-color: var(--color-primary-dark);
  padding-block: 56px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 32px;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 10px;
}

.stat-bar {
  width: 60px;
  height: 3px;
  background-color: var(--color-accent-gold);
  border-radius: 2px;
  margin: 0 auto 12px;
}

.stat-label {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.60);
  font-weight: 400;
  line-height: 1.4;
}

/* ---------------------------------------------------------
   11. Services
   --------------------------------------------------------- */
.services-section {
  background-color: var(--color-bg);
  padding-block: var(--section-py-mobile);
}

@media (min-width: 768px) {
  .services-section {
    padding-block: var(--section-py-tablet);
  }
}

@media (min-width: 1024px) {
  .services-section {
    padding-block: var(--section-py-desktop);
  }
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  cursor: default;
}

.service-card:hover,
.service-card:focus-visible {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  outline: none;
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26,127,142,0.08);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: 20px;
  transition: background-color var(--transition-base);
}

.service-card:hover .service-icon {
  background-color: rgba(26,127,142,0.14);
}

.service-card h3 {
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------------------------------------------------------
   12. About
   --------------------------------------------------------- */
.about-section {
  background-color: var(--color-surface);
  padding-block: var(--section-py-mobile);
}

@media (min-width: 768px) {
  .about-section {
    padding-block: var(--section-py-tablet);
  }
}

@media (min-width: 1024px) {
  .about-section {
    padding-block: var(--section-py-desktop);
  }
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 400px 1fr;
    gap: 72px;
  }
}

.about-photo {
  width: 100%;
  max-width: 400px;
  height: 480px;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-lg);
  display: block;
  margin-inline: auto;
  box-shadow: 0 8px 32px rgba(10,34,64,0.15);
}

.about-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(26,127,142,0.08);
  border: 1px solid rgba(26,127,142,0.20);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 99px;
  margin-bottom: 16px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #34D399;
  flex-shrink: 0;
}

.about-name {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: 4px;
}

.about-title {
  font-size: 0.9375rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 20px;
}

.about-text-col h2 {
  margin-bottom: 16px;
}

.about-text-col .lead {
  margin-bottom: 40px;
}

/* Timeline */
.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent) 0%, var(--color-border) 100%);
  border-radius: 1px;
}

.timeline-item {
  display: flex;
  gap: 24px;
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-surface);
  border: 3px solid var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
  z-index: 1;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.timeline-item:hover .timeline-marker {
  background-color: var(--color-accent);
}

.timeline-body {
  flex: 1;
  padding-bottom: 8px;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 4px;
  align-items: baseline;
}

.timeline-period {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
}

.timeline-org {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.timeline-role {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ---------------------------------------------------------
   13. Engagement Models
   --------------------------------------------------------- */
.engagement-section {
  background-color: var(--color-primary);
  padding-block: var(--section-py-mobile);
}

@media (min-width: 768px) {
  .engagement-section {
    padding-block: var(--section-py-tablet);
  }
}

@media (min-width: 1024px) {
  .engagement-section {
    padding-block: var(--section-py-desktop);
  }
}

.engagement-section .section-header h2 {
  color: var(--color-text-inverse);
}

.engagement-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

@media (min-width: 1024px) {
  .engagement-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.engagement-card {
  position: relative;
  background-color: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  cursor: default;
  overflow: hidden;
}

.engagement-card:hover,
.engagement-card:focus-visible {
  background-color: rgba(255,255,255,0.08);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
  outline: none;
}

.engagement-card-featured {
  border-top: 3px solid var(--color-accent-gold);
}

.engagement-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(201,168,76,0.12);
  border: 1px solid rgba(201,168,76,0.30);
  padding: 3px 8px;
  border-radius: 99px;
}

.engagement-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26,127,142,0.15);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: 20px;
}

.engagement-card h3 {
  color: var(--color-text-inverse);
  margin-bottom: 10px;
  font-size: 1.125rem;
}

.engagement-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.70);
  line-height: 1.65;
  margin-bottom: 16px;
}

.engagement-detail {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  font-weight: 500;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.10);
  line-height: 1.5;
}

.engagement-cta {
  margin-top: 48px;
  text-align: center;
}

/* ---------------------------------------------------------
   14. Contact
   --------------------------------------------------------- */
.contact-section {
  background-color: var(--color-surface-alt);
  padding-block: var(--section-py-mobile);
}

@media (min-width: 768px) {
  .contact-section {
    padding-block: var(--section-py-tablet);
  }
}

@media (min-width: 1024px) {
  .contact-section {
    padding-block: var(--section-py-desktop);
  }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: 72px;
  }
}

.contact-info-col h2 {
  margin-bottom: 16px;
}

.contact-info-col .lead {
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.contact-detail-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26,127,142,0.10);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-detail-value {
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

a.contact-detail-value:hover {
  color: var(--color-accent);
}

.contact-availability-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 99px;
  box-shadow: var(--shadow-sm);
}

.badge-dot-teal {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #34D399;
  flex-shrink: 0;
  animation: pulse-teal 2.5s ease-in-out infinite;
}

@keyframes pulse-teal {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0.40); }
  50% { box-shadow: 0 0 0 5px rgba(52,211,153,0); }
}

/* Contact Form Card */
.contact-form-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

@media (max-width: 479px) {
  .contact-form-card {
    padding: 28px 20px;
  }
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  display: block;
  width: 100%;
  padding: 11px 14px;
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(26,127,142,0.12);
  background-color: var(--color-surface);
}

.form-group input.field-invalid,
.form-group textarea.field-invalid,
.form-group select.field-invalid {
  border-color: #E53E3E;
  box-shadow: 0 0 0 3px rgba(229,62,62,0.10);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.select-wrapper {
  position: relative;
}

.select-wrapper select {
  padding-right: 40px;
  cursor: pointer;
}

.select-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  display: flex;
}

.field-error {
  display: block;
  font-size: 0.8125rem;
  color: #E53E3E;
  margin-top: 4px;
  min-height: 1.2em;
}

.gdpr-note {
  font-size: 0.775rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 14px;
  text-align: center;
}

.form-success-msg {
  margin-top: 16px;
  padding: 14px 18px;
  background-color: rgba(52,211,153,0.10);
  border: 1px solid rgba(52,211,153,0.30);
  border-radius: var(--radius-sm);
  color: #065F46;
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
}

.form-success-msg.form-error {
  background-color: rgba(220,38,38,0.08);
  border-color: rgba(220,38,38,0.25);
  color: #991B1B;
}

/* Loading spinner */
.spin-icon {
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------------------------------------------------------
   15. Footer
   --------------------------------------------------------- */
.site-footer {
  background-color: var(--color-primary-dark);
  border-top: 4px solid var(--color-accent-gold);
  padding-top: 64px;
  padding-bottom: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
  }
}

.footer-logo {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
  margin-bottom: 16px;
  text-decoration: none;
}

.footer-tagline {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.50);
  margin-bottom: 20px;
  line-height: 1.6;
}

.footer-linkedin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.60);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.footer-linkedin-btn:hover {
  color: var(--color-text-inverse);
  border-color: rgba(255,255,255,0.40);
  background-color: rgba(255,255,255,0.06);
}

.footer-col h4 {
  margin-bottom: 20px;
  color: rgba(255,255,255,0.40);
}

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

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.60);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-inverse);
}

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

.footer-contact-list li {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.footer-contact-list a {
  color: rgba(255,255,255,0.60);
  transition: color var(--transition-fast);
}

.footer-contact-list a:hover {
  color: var(--color-text-inverse);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

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

.footer-legal a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: rgba(255,255,255,0.70);
}

/* ---------------------------------------------------------
   16. Focus Visible Global
   --------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------------------------------------------------------
   17. 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;
  }

  .animate-in {
    opacity: 1;
    transform: none;
    animation: none;
  }
}