/* ═══════════════════════════════════════════════════════════
   Old 27 Oil Co. — Custom Styles
   ═══════════════════════════════════════════════════════════ */

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

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

body {
  overflow-x: hidden;
}

::selection {
  background-color: rgba(212, 160, 74, 0.3);
  color: #F5F0F3;
}

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #1A0F15;
}
::-webkit-scrollbar-thumb {
  background: #4A2C3D;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #6B3A48;
}

/* ── Animations ──────────────────────────────────────────── */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scroll-line {
  0%, 100% {
    opacity: 0.3;
    transform: scaleY(0.5);
    transform-origin: top;
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
  }
}

@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-fade-in {
  animation-name: fade-in;
  animation-duration: 0.9s;
  animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-scroll-line {
  animation: scroll-line 1.8s ease-in-out infinite;
}

/* ── Scroll-triggered reveal ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.12s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.19s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.26s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.33s; opacity: 1; transform: translateY(0); }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.40s; opacity: 1; transform: translateY(0); }

/* ── Navbar ──────────────────────────────────────────────── */
#navbar {
  background: transparent;
  transition: background-color 0.5s ease, backdrop-filter 0.5s ease, box-shadow 0.5s ease;
}

#navbar.scrolled {
  background: rgba(15, 9, 12, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(212, 160, 74, 0.1);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #D4A04A;
  transition: width 0.3s ease;
}

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

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

#mobile-menu.open .mobile-link {
  animation: fade-in 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.18s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.26s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.34s; }

/* Hamburger animation */
#menu-btn.active #bar1 {
  transform: translateY(4px) rotate(45deg);
}
#menu-btn.active #bar2 {
  opacity: 0;
  transform: scaleX(0);
}
#menu-btn.active #bar3 {
  transform: translateY(-4px) rotate(-45deg);
}

/* ── Service Cards ───────────────────────────────────────── */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #D4A04A, transparent);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.service-card:hover::before {
  opacity: 1;
}

/* ── Input Focus ─────────────────────────────────────────── */
input:focus,
textarea:focus {
  background: rgba(26, 15, 21, 0.9);
}

/* ── Button Ripple ───────────────────────────────────────── */
button, a[type="submit"] {
  position: relative;
  overflow: hidden;
}

/* ── Responsive Tweaks ───────────────────────────────────── */
@media (max-width: 640px) {
  .font-display {
    word-break: keep-all;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
  .reveal, .reveal-left, .reveal-right, .reveal-scale, .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}