*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: #E8734A;
  color: #111827;
  padding: 0.75rem 1.5rem;
  z-index: 100;
  font-weight: 600;
  border-radius: 0 0 0.25rem 0.25rem;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* ── Navigation ── */
#site-header {
  background: transparent;
}

#site-header.scrolled {
  background: rgba(10, 15, 26, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #E8734A;
  transition: width 0.3s ease;
}

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

/* ── Mobile Menu ── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu.open .mobile-link {
  animation: fadeInUp 0.4s ease forwards;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.2s; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.menu-btn.active .menu-line:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.menu-btn.active .menu-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-btn.active .menu-line:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
  width: 1.25rem;
}

/* ── Hero ── */
.hero-bg {
  will-change: transform;
}

.hero-img {
  will-change: transform;
}

.hero-overlay {
  background-image: linear-gradient(to bottom, rgba(10, 15, 26, 0.4) 0%, rgba(10, 15, 26, 0.3) 50%, rgba(10, 15, 26, 0.7) 100%);
}

.hero-title {
  opacity: 1;
  transform: translateY(0);
}

.hero-tag {
  opacity: 1;
  transform: translateY(0);
}

.hero-subtitle {
  opacity: 1;
  transform: translateY(0);
}

.hero-ctas {
  opacity: 1;
  transform: translateY(0);
}

/* Hero entrance animation */
@keyframes heroIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-tag { animation: heroIn 0.8s ease 0.2s both; }
.hero-title { animation: heroIn 0.9s ease 0.4s both; }
.hero-subtitle { animation: heroIn 0.9s ease 0.6s both; }
.hero-ctas { animation: heroIn 0.9s ease 0.8s both; }

/* Scroll indicator */
.scroll-line {
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ── Buttons ── */
.btn-primary {
  box-shadow: 0 4px 20px rgba(232, 115, 74, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 30px rgba(232, 115, 74, 0.4);
  transform: translateY(-2px);
}

.btn-secondary:hover {
  box-shadow: 0 4px 20px rgba(232, 115, 74, 0.15);
  transform: translateY(-2px);
}

/* ── Cards ── */
.card-item {
  background: rgba(55, 65, 81, 0.3);
  border: 1px solid rgba(55, 65, 81, 0.5);
  border-radius: 0.25rem;
  padding: 0;
  transition: border-color 0.4s ease, transform 0.4s ease, box-shadow 0.4s ease;
}

.card-item:hover {
  border-color: rgba(232, 115, 74, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ── Scroll Reveal ── */
.reveal-up,
.reveal-left,
.reveal-right {
  /* Default: visible (no JS progressive enhancement) */
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-up,
  .reveal-left,
  .reveal-right {
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal-up { transform: translateY(40px); }
  .reveal-left { transform: translateX(-40px); }
  .reveal-right { transform: translateX(40px); }

  .reveal-up.revealed,
  .reveal-left.revealed,
  .reveal-right.revealed {
    opacity: 1;
    transform: none;
  }
}

/* ── Stagger children ── */
.card-item {
  transition-delay: 0s;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-up.revealed ~ .reveal-up { transition-delay: 0.1s; }
  .reveal-up.revealed:nth-of-type(1) { transition-delay: 0s; }
  .reveal-up.revealed:nth-of-type(2) { transition-delay: 0.1s; }
  .reveal-up.revealed:nth-of-type(3) { transition-delay: 0.2s; }
  .reveal-up.revealed:nth-of-type(4) { transition-delay: 0.3s; }
  .reveal-up.revealed:nth-of-type(5) { transition-delay: 0.4s; }
  .reveal-up.revealed:nth-of-type(6) { transition-delay: 0.5s; }
}

/* ── Form ── */
input:focus,
textarea:focus {
  box-shadow: 0 0 0 3px rgba(232, 115, 74, 0.15);
}

/* ── Selection ── */
::selection {
  background: rgba(232, 115, 74, 0.3);
  color: #f7f7f8;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #111827;
}

::-webkit-scrollbar-thumb {
  background: #374151;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #E8734A;
}

/* ── Focus visible ── */
:focus-visible {
  outline: 2px solid #E8734A;
  outline-offset: 2px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.75rem;
  }

  .hero-title br {
    display: none;
  }

  .hero-title::after {
    content: '';
  }
}