/* ===========================
   VARIABLES
=========================== */
:root {
  --black:      #121212;
  --black-2:    #2f2f2f;
  --white:      #ffffff;
  --lime:       #97fb57;
  --red:        #b11a1e;
  --white-smoke: #ebebeb;

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --container: 1200px;
  --nav-h: 72px;
  --ease: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
}

/* ===========================
   LAYOUT
=========================== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===========================
   NAVBAR
=========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--ease), box-shadow var(--ease);
}

.nav.scrolled {
  background: var(--black);
  box-shadow: 0 1px 0 var(--black-2);
}

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

.nav-logo img {
  width: 9rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Nav button */
.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--white);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 0;
  transition: color var(--ease);
}

.nav-link:hover {
  color: var(--lime);
}

.arrow {
  font-size: 0.6rem;
  opacity: 0.7;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--black-2);
  border-radius: 0.5rem;
  overflow: hidden;
  min-width: 220px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ease), transform var(--ease);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  transition: background var(--ease), color var(--ease);
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--lime);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border-radius: 4rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ease);
}

.btn-outline {
  border: 1px solid var(--red);
  color: var(--white);
  background: transparent;
}

.btn-outline:hover {
  background: var(--red);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--black);
  padding: 0.5rem 2rem 1.5rem;
  border-top: 1px solid var(--black-2);
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  padding: 1rem 0;
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 1px solid var(--black-2);
  transition: color var(--ease);
}

.mobile-link:last-child {
  border-bottom: none;
}

.mobile-link:hover {
  color: var(--lime);
}

/* ===========================
   HERO
=========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    rgba(18, 18, 18, 0.92),
    rgba(18, 18, 18, 0.82) 55%,
    rgba(18, 18, 18, 0.6) 80%,
    rgba(18, 18, 18, 0.2)
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--nav-h);
}

.hero-title {
  font-size: clamp(2.25rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--white-smoke);
  max-width: 480px;
  font-weight: 300;
}

/* ===========================
   FEATURE SECTIONS
=========================== */
.feature {
  padding: 7rem 0;
}

.feature:nth-child(even) {
  background: rgba(255, 255, 255, 0.025);
}

.feature-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

/* Flip layout for reverse sections */
.feature-reverse .feature-inner {
  grid-template-columns: 1fr 1fr;
}

.feature-reverse .feature-inner .feature-image {
  order: -1;
}

/* Subhead badge */
.subhead {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1.5px solid var(--red);
  border-radius: 4rem;
  padding: 4px 14px;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.feature-title {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-list li {
  padding-left: 1.375rem;
  position: relative;
  color: var(--white-smoke);
  font-size: 0.9375rem;
  font-weight: 400;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
}

.feature-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 0.75rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* ===========================
   FOOTER
=========================== */
.footer {
  border-top: 1px solid var(--black-2);
  padding: 4rem 0 2rem;
  background: var(--black);
}

.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 3rem;
  align-items: start;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--black-2);
  margin-bottom: 2rem;
}

.footer-logo img {
  width: 7rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  padding-top: 0.25rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.25rem;
}

.footer-link {
  font-size: 0.875rem;
  color: #999;
  transition: color var(--ease);
}

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

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: #555;
}

/* ===========================
   RESPONSIVE — TABLET
=========================== */
@media (max-width: 900px) {
  .feature-inner {
    gap: 3rem;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-logo {
    grid-column: 1 / -1;
  }
}

/* ===========================
   RESPONSIVE — MOBILE
=========================== */
@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    background-attachment: scroll;
  }

  .feature {
    padding: 4rem 0;
  }

  .feature-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-reverse .feature-inner .feature-image {
    order: 0;
  }

  .feature-image img {
    height: 240px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-logo {
    grid-column: auto;
  }
}