/* ── Base & Utilities ── */
*, *::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;
}

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

::selection {
  background: rgba(13, 148, 136, 0.2);
  color: inherit;
}

/* ── Hero Gradient ── */
.hero-gradient {
  background: linear-gradient(
    135deg,
    #042f2e 0%,
    #134e4a 20%,
    #0f766e 40%,
    #115e59 60%,
    #1e293b 80%,
    #0f172a 100%
  );
}

/* ── Navbar ── */
.nav-link {
  color: rgba(255, 255, 255, 0.75);
}

.nav-link:hover {
  color: #ffffff;
}

/* ── Scroll Indicator ── */
@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

.scroll-indicator svg {
  animation: scroll-bounce 2s ease-in-out infinite;
}

/* ── Hero Animations ── */
.hero-eyebrow {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.3s;
}

.hero-headline {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.5s;
}

.hero-divider {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards 0.8s;
}

.hero-subtitle {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.9s;
}

.hero-cta {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 1.1s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── Eyebrow Labels ── */
.eyebrow {
  letter-spacing: 0.35em;
}

/* ── Service Cards ── */
.service-card {
  transition: background-color 0.4s ease;
}

.service-card:hover {
  background-color: #f8fafc;
}

/* ── Gallery ── */
.gallery-item {
  overflow: hidden;
  border-radius: 2px;
}

.gallery-item img {
  will-change: transform;
}

/* ── Form Inputs ── */
.form-input {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid #e2e8f0;
  padding: 12px 0;
  color: #0f172a;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  transition: border-color 0.3s ease;
  outline: none;
}

.form-input::placeholder {
  color: #cbd5e1;
}

.form-input:focus {
  border-bottom-color: #0d9488;
}

.form-select {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid #e2e8f0;
  padding: 12px 0;
  color: #64748b;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  transition: border-color 0.3s ease;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
}

.form-select:focus {
  border-bottom-color: #0d9488;
}

/* ── Submit Button ── */
.btn-submit {
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-submit:hover {
  transform: translateY(-1px);
}

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

/* ── Reveal Animations (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

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

/* Fallback: always visible if JS disabled or prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

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

.mobile-link {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* ── Testimonial Slider ── */
.testimonial-slide {
  position: relative;
}

.testimonial-dot {
  transition: background-color 0.3s ease, width 0.3s ease;
}

.testimonial-dot.active {
  background-color: #14b8a6;
  width: 24px;
  border-radius: 9999px;
}

/* ── Responsive ── */
@media (max-width: 767px) {
  .hero-gradient {
    background: linear-gradient(
      160deg,
      #042f2e 0%,
      #134e4a 30%,
      #0f766e 50%,
      #1e293b 75%,
      #0f172a 100%
    );
  }
}