/* CSS Custom Properties & Design Tokens */
:root {
  --tn-color-bg: #0d0f16;
  --tn-color-dark: #12141c;
  --tn-color-panel: #171a24;
  --tn-color-accent: #ff2438;
  --tn-color-text: #e8e9ee;
  --tn-color-muted: #8b8f9d;
  --tn-color-bright: #f5f6fa;
  
  --tn-font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --tn-font-heading: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  --tn-radius: 0.6rem;
  --tn-max-width: 1200px;
  
  --tn-header-padding: 1.5rem 2rem;
  --tn-transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --tn-glow-accent: 0 0 15px rgba(255, 36, 56, 0.35);
}

/* Minimal Global Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--tn-color-bg);
  color: var(--tn-color-text);
  font-family: var(--tn-font-body);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

/* Base Shell & Chrome */
.tn-header-wrapper {
  background-color: var(--tn-color-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.tn-header-container {
  max-width: var(--tn-max-width);
  margin: 0 auto;
  padding: var(--tn-header-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.tn-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  height: auto;
  max-width: 160px;
  transition: var(--tn-transition-smooth);
}

.tn-logo:hover {
  filter: brightness(1.15);
}

.tn-logo img {
  max-height: 48px;
  object-fit: contain;
}

/* CTAs styling */
.tn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--tn-font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--tn-radius);
  transition: var(--tn-transition-smooth);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.tn-cta--primary {
  background-color: var(--tn-color-accent);
  color: #ffffff;
  box-shadow: var(--tn-glow-accent);
  border: 1px solid var(--tn-color-accent);
}

.tn-cta--primary:hover {
  background-color: #ff3c4e;
  box-shadow: 0 0 20px rgba(255, 36, 56, 0.6);
  transform: translateY(-1px);
}

.tn-cta--secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--tn-color-bright);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.tn-cta--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.tn-header-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.tn-header-ctas {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Responsive Navigation with CSS Toggle */
.tn-nav {
  position: relative;
  flex-grow: 1;
  display: flex;
  justify-content: center;
}

.tn-nav__checkbox {
  display: none;
}

/* Mobile Toggle Burger Icon */
.tn-nav__toggle {
  display: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--tn-radius);
  transition: var(--tn-transition-smooth);
  background-color: rgba(255, 255, 255, 0.03);
}

.tn-nav__toggle:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.tn-nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--tn-color-bright);
  border-radius: 1px;
  transition: var(--tn-transition-smooth);
}

/* Desktop Menu Navigation */
.tn-nav__list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
}

.tn-nav__item {
  position: relative;
}

.tn-nav__link {
  color: var(--tn-color-text);
  font-family: var(--tn-font-heading);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.5rem 0.25rem;
  display: inline-block;
  transition: var(--tn-transition-smooth);
  position: relative;
}

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

.tn-nav__link:hover {
  color: #ffffff;
}

.tn-nav__link:hover::after {
  width: 100%;
}

.tn-nav__link--active {
  color: var(--tn-color-accent);
}

.tn-nav__link--active::after {
  width: 100%;
}

/* Nested Submenu Dropdowns */
.tn-nav__item--has-children:hover .tn-nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.tn-nav__submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--tn-color-panel);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-top: 3px solid var(--tn-color-accent);
  border-radius: var(--tn-radius);
  padding: 0.5rem 0;
  margin: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--tn-transition-smooth);
  z-index: 100;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.tn-nav__submenu .tn-nav__link {
  display: block;
  padding: 0.6rem 1.2rem;
  text-transform: none;
  font-size: 0.9rem;
  color: var(--tn-color-muted);
}

.tn-nav__submenu .tn-nav__link:hover {
  background-color: rgba(255, 255, 255, 0.03);
  color: #ffffff;
  padding-left: 1.4rem;
}

.tn-nav__submenu .tn-nav__link::after {
  display: none;
}

/* Language Switcher */
.tn-lang {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.25rem;
  border-radius: var(--tn-radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tn-lang__item {
  display: inline-flex;
}

.tn-lang__link {
  color: var(--tn-color-muted);
  font-family: var(--tn-font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  text-decoration: none;
  padding: 0.4rem 0.6rem;
  border-radius: calc(var(--tn-radius) - 0.2rem);
  transition: var(--tn-transition-smooth);
}

.tn-lang__link:hover {
  color: var(--tn-color-bright);
  background: rgba(255, 255, 255, 0.05);
}

.tn-lang__link--active {
  color: #ffffff;
  background-color: var(--tn-color-accent);
}

/* Breadcrumbs */
.tn-breadcrumbs-wrapper {
  background-color: var(--tn-color-bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding: 0.75rem 0;
}

.tn-breadcrumbs-container {
  max-width: var(--tn-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.tn-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--tn-font-heading);
}

.tn-breadcrumbs__item {
  color: var(--tn-color-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tn-breadcrumbs__item:not(:last-child)::after {
  content: '/';
  color: var(--tn-color-accent);
  opacity: 0.7;
}

.tn-breadcrumbs__link {
  color: var(--tn-color-muted);
  text-decoration: none;
  transition: var(--tn-transition-smooth);
}

.tn-breadcrumbs__link:hover {
  color: var(--tn-color-accent);
}

/* Main Content Outer Shell Only (Layout spacing) */
.tn-main-content {
  flex-grow: 1;
}

/* Footer Chrome styling */
.tn-footer-wrapper {
  background-color: var(--tn-color-dark);
  border-top: 2px solid var(--tn-color-accent);
  margin-top: auto;
  padding: 4rem 2rem 2rem;
}

.tn-footer-container {
  max-width: var(--tn-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.tn-footer-top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.tn-footer-brand {
  display: flex;
  justify-content: flex-start;
}

.tn-footer-nav-col {
  display: flex;
  justify-content: center;
}

.tn-footer-actions-col {
  display: flex;
  justify-content: flex-end;
}

.tn-footer-ctas {
  display: flex;
  gap: 0.75rem;
}

/* Footer Secondary Links List */
.tn-footer-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
}

.tn-footer-nav__link {
  color: var(--tn-color-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-family: var(--tn-font-heading);
  font-weight: 500;
  transition: var(--tn-transition-smooth);
}

.tn-footer-nav__link:hover {
  color: var(--tn-color-bright);
}

.tn-footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.tn-footer-copyright {
  margin: 0;
  font-size: 0.8rem;
  color: var(--tn-color-muted);
  letter-spacing: 0.03em;
}

/* RESPONSIVE LAYOUT & BURGER CONTRACT */
@media (max-width: 991px) {
  .tn-header-container {
    padding: 1rem 1.5rem;
  }
  .tn-footer-top {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
    gap: 2.5rem;
  }
  .tn-footer-brand,
  .tn-footer-nav-col,
  .tn-footer-actions-col {
    justify-content: center;
  }
}

@media (max-width: 767px) {
  /* Enable CSS-only burger mobile menu */
  .tn-nav {
    justify-content: flex-end;
    order: 2;
    flex-grow: 0;
  }

  .tn-nav__toggle {
    display: flex;
    z-index: 101;
  }

  .tn-nav__list {
    display: none; /* Hidden on mobile by default */
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--tn-color-dark);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    padding: 6rem 2rem 2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
  }

  .tn-nav__item {
    width: 100%;
  }

  .tn-nav__link {
    font-size: 1.1rem;
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .tn-nav__link::after {
    display: none;
  }

  /* Toggle Checked State */
  .tn-nav__checkbox:checked ~ .tn-nav__list {
    display: flex;
    right: 0;
  }

  /* Change hamburger to X when active */
  .tn-nav__checkbox:checked ~ .tn-nav__toggle .tn-nav__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .tn-nav__checkbox:checked ~ .tn-nav__toggle .tn-nav__toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .tn-nav__checkbox:checked ~ .tn-nav__toggle .tn-nav__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Submenu inline treatment on mobile */
  .tn-nav__submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: none;
    box-shadow: none;
    padding: 0.5rem 0 0 1rem;
    display: block;
  }

  .tn-header-actions {
    order: 1;
    margin-left: auto;
  }

  .tn-header-ctas {
    display: none; /* Hide header action buttons on small mobile to avoid header overflow */
  }
}

@media (max-width: 480px) {
  .tn-header-actions {
    gap: 0.75rem;
  }
  .tn-lang {
    padding: 0.15rem;
  }
  .tn-lang__link {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }
}