/* ============================================
   Troll Motors — Custom Styles
   Saab-heritage warm workshop aesthetic
   ============================================ */

:root {
  /* Brand */
  --troll-red: #C8232C;
  --troll-red-hover: #A81D24;
  --troll-red-light: rgba(200, 35, 44, 0.08);
  --troll-red-glow: rgba(200, 35, 44, 0.15);

  /* Saab heritage accent */
  --saab-teal: #1A7A6D;
  --saab-teal-light: rgba(26, 122, 109, 0.10);

  /* Warm surfaces */
  --cream: #FAF7F2;
  --cream-dark: #F0EBE3;
  --warm-white: #FDFCFA;
  --warm-gray-50: #F5F2ED;
  --warm-gray-100: #E8E4DD;
  --warm-gray-200: #D4CFC7;
  --warm-gray-300: #B8B2A8;

  /* Text */
  --ink: #2C2824;
  --ink-secondary: #5C564E;
  --ink-tertiary: #8A8279;
  --ink-muted: #ABA49B;

  /* Amber instrument accent */
  --amber: #D4940A;
  --amber-light: rgba(212, 148, 10, 0.12);

  /* Borders */
  --border: rgba(44, 40, 36, 0.10);
  --border-soft: rgba(44, 40, 36, 0.06);
  --border-emphasis: rgba(44, 40, 36, 0.18);

  /* Shadows — warm-tinted */
  --shadow-sm: 0 1px 3px rgba(44, 40, 36, 0.06), 0 1px 2px rgba(44, 40, 36, 0.04);
  --shadow-md: 0 4px 12px rgba(44, 40, 36, 0.08), 0 2px 4px rgba(44, 40, 36, 0.04);
  --shadow-lg: 0 12px 32px rgba(44, 40, 36, 0.10), 0 4px 8px rgba(44, 40, 36, 0.04);
}

/* ---- Base ---- */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--cream);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Instrument-gauge divider ---- */
.gauge-divider {
  position: relative;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.gauge-divider::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  clip-path: polygon(0 0, 100% 0, 100% 50%, 0 50%);
}

.gauge-divider::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border: 1px solid var(--border-soft);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  clip-path: polygon(0 0, 100% 0, 100% 50%, 0 50%);
}

.gauge-divider-dot {
  width: 6px;
  height: 6px;
  background: var(--troll-red);
  border-radius: 50%;
  position: relative;
  z-index: 1;
}

/* ---- Fine line separator ---- */
.fine-line {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--border) 15%,
    var(--border) 85%,
    transparent
  );
}

/* ---- Hero ---- */
.hero-section {
  position: relative;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  display: block;
  object-fit: cover;
  object-position: 44% 60%;
  height: 45vh;
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* Desktop: overlay layout */
@media (min-width: 768px) {
  .hero-section {
    min-height: 85vh;
    display: flex;
    align-items: flex-end;
  }

  .hero-img {
    position: absolute;
    inset: 0;
    height: 100%;
    object-position: center 30%;
  }

}

.hero-overlay {
  display: none;
}

@media (min-width: 768px) {
  .hero-overlay {
    display: block;
    position: absolute;
    inset: 0;
    background: linear-gradient(
      to bottom,
      rgba(44, 40, 36, 0.15) 0%,
      rgba(44, 40, 36, 0.05) 40%,
      rgba(250, 247, 242, 0.80) 70%,
      var(--cream) 100%
    );
  }
}

/* ---- Navigation ---- */
.site-nav {
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.nav-scrolled {
  background-color: rgba(250, 247, 242, 0.95) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border) !important;
  box-shadow: var(--shadow-sm) !important;
}

.nav-scrolled .nav-link-hero {
  color: var(--ink) !important;
}

/* ---- Service strip ---- */
.service-strip {
  border-bottom: 1px solid var(--border-soft);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.service-strip:hover {
  background-color: var(--troll-red-light);
  border-color: rgba(200, 35, 44, 0.15);
}

.service-strip:last-child {
  border-bottom: none;
}

/* ---- Focus styles (accessibility) ---- */
:focus-visible {
  outline: 2px solid var(--troll-red);
  outline-offset: 2px;
}

.teal-link:focus-visible {
  outline-color: var(--saab-teal);
}

/* ---- CTA Buttons ---- */
.btn-primary {
  display: inline-block;
  background-color: var(--troll-red);
  color: white;
  border: 2px solid var(--troll-red);
  border-radius: 4px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--troll-red-hover);
  border-color: var(--troll-red-hover);
  box-shadow: 0 4px 16px var(--troll-red-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: var(--troll-red);
  border: 2px solid var(--troll-red);
  border-radius: 4px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-outline:hover {
  background-color: var(--troll-red);
  color: white;
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: translateY(0);
}

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---- Card ---- */
.card {
  background: var(--warm-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ---- Teal accent link ---- */
.teal-link {
  color: var(--saab-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(26, 122, 109, 0.3);
  transition: text-decoration-color 0.2s ease;
}

.teal-link:hover {
  text-decoration-color: var(--saab-teal);
}

/* ---- Mobile nav overlay ---- */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: rgba(250, 247, 242, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.2s ease;
}

.mobile-nav a:hover {
  color: var(--troll-red);
}

/* ---- Hamburger ---- */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 110;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  transition: all 0.3s ease;
  border-radius: 1px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Fine line (dark variant for footer) ---- */
.fine-line-dark {
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.1) 15%, rgba(255,255,255,0.1) 85%, transparent);
}

/* ---- Footer ---- */
footer {
  background: var(--ink);
  color: var(--warm-gray-200);
}

footer a {
  color: var(--warm-gray-200);
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover {
  color: white;
}

/* ---- Logo carousel ---- */
.logo-carousel {
  overflow: hidden;
  position: relative;
  width: 100%;
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.logo-track {
  display: flex;
  align-items: center;
  gap: 3rem;
  width: max-content;
  animation: scroll-logos 40s linear infinite;
}

@media (hover: hover) and (pointer: fine) {
  .logo-track:hover {
    animation-play-state: paused;
  }
}

.logo-item {
  height: 40px;
  width: auto;
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity 0.3s ease, filter 0.3s ease;
}

@media (hover: hover) and (pointer: fine) {
  .logo-item:hover {
    opacity: 1;
  }
}

@keyframes scroll-logos {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ---- Spiral background decoration ---- */
.spiral-bg {
  position: absolute;
  opacity: 0.025;
  pointer-events: none;
}