/* =========================================================
   TAV ENTERPRISES CORPORATION — Global Stylesheet
   Extends Tailwind with brand tokens, typography, and
   reusable component styles used across all pages.
   ========================================================= */

:root {
  --color-primary: #1c2230;
  --color-primary-soft: #2a3142;
  --color-accent: #b8935c;
  --color-accent-dark: #a27d48;
  --color-cream: #faf8f4;
  --color-surface: #ffffff;
  --color-text: #2a2a2a;
  --color-muted: #6b6b6b;
  --color-border: #e8e4dc;
}

* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: var(--color-surface);
  line-height: 1.65;
}

h1, h2, h3, h4, h5, h6, .font-display {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: #fff; color: var(--color-primary); }
.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { background: var(--color-primary-soft); }
.btn-ghost { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-ghost:hover { background: var(--color-primary); color: #fff; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.98);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  position: relative;
  padding: 0.5rem 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 1px;
  width: 0;
  background: var(--color-accent);
  transition: width 0.3s ease;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 40px rgba(28,34,48,0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
  padding: 0.5rem 0;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a {
  display: block;
  padding: 0.7rem 1.25rem;
  font-size: 0.88rem;
  color: var(--color-text);
  transition: all 0.15s ease;
}
.dropdown-menu a:hover { background: var(--color-cream); color: var(--color-accent); padding-left: 1.5rem; }

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(28,34,48,0.55) 0%, rgba(28,34,48,0.75) 100%);
  z-index: 1;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-inner { position: relative; z-index: 2; }
.hero h1 { color: #fff; font-size: clamp(2.25rem, 5vw, 4.5rem); line-height: 1.08; }
.hero p.lede { font-size: clamp(1rem, 1.3vw, 1.2rem); color: rgba(255,255,255,0.88); max-width: 38rem; }

/* Page hero (smaller) */
.page-hero {
  position: relative;
  min-height: 54vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(28,34,48,0.55) 0%, rgba(28,34,48,0.78) 100%);
  z-index: 1;
}
.page-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.page-hero-inner { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: clamp(2rem, 4.5vw, 3.5rem); }

/* Section spacing */
.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-cream { background: var(--color-cream); }
.section-dark { background: var(--color-primary); color: #fff; }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }

/* Cards */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 48px rgba(28,34,48,0.08); }

.service-card { position: relative; overflow: hidden; }
.service-card .img-wrap { overflow: hidden; aspect-ratio: 4/3; }
.service-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.service-card:hover img { transform: scale(1.06); }

/* Project grid */
.project-card { position: relative; overflow: hidden; cursor: pointer; aspect-ratio: 4/3; }
.project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.project-card:hover img { transform: scale(1.08); }
.project-card .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(28,34,48,0) 40%, rgba(28,34,48,0.9) 100%);
  display: flex; align-items: flex-end; padding: 1.75rem;
  opacity: 1; transition: all 0.3s ease;
}
.project-card .overlay-content { color: #fff; transform: translateY(6px); transition: all 0.3s ease; }

/* Testimonials carousel */
.testimonial-track { display: flex; transition: transform 0.6s cubic-bezier(0.22,0.61,0.36,1); }
.testimonial-slide { min-width: 100%; padding: 0 1rem; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-trigger {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; text-align: left; padding: 1.4rem 0;
  font-family: 'Playfair Display', serif; font-size: 1.15rem; color: var(--color-primary);
}
.faq-trigger .icon { transition: transform 0.3s ease; flex-shrink: 0; margin-left: 1rem; }
.faq-trigger[aria-expanded="true"] .icon { transform: rotate(45deg); }
.faq-panel { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-panel-inner { padding: 0 0 1.5rem; color: var(--color-muted); }

/* Forms */
.form-field { margin-bottom: 1.25rem; }
.form-label {
  display: block; font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-primary); margin-bottom: 0.5rem;
}
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 0.85rem 1rem;
  background: #fff; border: 1px solid var(--color-border);
  font-family: inherit; font-size: 0.95rem; color: var(--color-text);
  transition: border-color 0.2s ease;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--color-accent);
}
.form-error { color: #c44; font-size: 0.82rem; margin-top: 0.35rem; display: none; }
.form-field.has-error .form-input,
.form-field.has-error .form-textarea,
.form-field.has-error .form-select { border-color: #c44; }
.form-field.has-error .form-error { display: block; }

/* Ratecore callout */
.ratecore-callout {
  background: linear-gradient(135deg, #faf8f4 0%, #f4efe5 100%);
  border-left: 3px solid var(--color-accent);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
}
.ratecore-callout a {
  color: var(--color-accent-dark);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.ratecore-callout a:hover { color: var(--color-primary); }

/* Footer */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.72); }
.site-footer h4 { color: #fff; font-family: 'Inter', sans-serif; font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600; }
.site-footer a { color: rgba(255,255,255,0.72); transition: color 0.2s ease; }
.site-footer a:hover { color: var(--color-accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(28,34,48,0.85);
  z-index: 100; display: none; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.modal-backdrop.open { display: flex; }
.modal-content {
  background: #fff; max-width: 960px; width: 100%;
  max-height: 90vh; overflow-y: auto; position: relative;
}
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 2;
}

/* Utility */
.divider {
  width: 60px; height: 1px; background: var(--color-accent);
  margin: 0 0 1.5rem;
}
.divider-center { margin-left: auto; margin-right: auto; }

/* Mobile nav */
.mobile-nav {
  position: fixed; top: 0; right: 0;
  width: 85%; max-width: 380px; height: 100vh;
  background: #fff; z-index: 60;
  transform: translateX(100%); transition: transform 0.3s ease;
  overflow-y: auto;
  padding: 5rem 2rem 2rem;
}
.mobile-nav.open { transform: translateX(0); box-shadow: -20px 0 40px rgba(0,0,0,0.1); }
.mobile-nav a {
  display: block; padding: 0.9rem 0;
  font-size: 1.05rem; color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-overlay {
  position: fixed; inset: 0; background: rgba(28,34,48,0.5);
  z-index: 55; opacity: 0; visibility: hidden;
  transition: all 0.3s ease;
}
.mobile-nav-overlay.open { opacity: 1; visibility: visible; }

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Stats */
.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  color: var(--color-accent);
  line-height: 1;
}

/* Process steps */
.step-number {
  font-family: 'Playfair Display', serif;
  font-size: 3.5rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.35;
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .hero { min-height: 80vh; }
  .page-hero { min-height: 44vh; }
}