/* ========================================
   DFW Colon-Rectal Surgery — Custom Styles
   ======================================== */

/* Custom Properties */
:root {
  --charcoal-dark: #2C2C2C;
  --charcoal-darker: #1A1A1A;
  --charcoal-light: #6B6B6B;
  --coral: #E8835B;
  --coral-dark: #D4714E;
  --stone-50: #FAFAF8;
  --stone-100: #F5F5F3;
  --stone-200: #E7E5E1;
  --cormorant: 'Cormorant Garamond', Georgia, serif;
  --lato: 'Lato', 'Helvetica Neue', sans-serif;
}

/* Base */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--lato);
  color: var(--charcoal-dark);
  background-color: var(--stone-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.font-cormorant {
  font-family: var(--cormorant);
}

.font-sans {
  font-family: var(--lato);
}

/* Coral Button */
.btn-coral {
  background-color: var(--coral);
  color: #ffffff;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.btn-coral:hover {
  background-color: var(--coral-dark);
  color: #ffffff;
}

.btn-coral:active {
  transform: scale(0.98);
}

/* Service Card */
.service-card {
  will-change: transform;
}

.service-card:hover {
  transform: translateY(-4px);
}

/* Condition Card */
.condition-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.condition-card:hover {
  transform: translateY(-3px);
}

/* FAQ */
.faq-btn {
  padding-bottom: 0.5rem;
  cursor: pointer;
}

.faq-answer {
  padding-left: 0.25rem;
  border-left: 2px solid var(--coral);
  margin-left: 0.25rem;
}

.faq-icon {
  transform-origin: center;
}

.faq-btn[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

/* Navbar Transition States */
.nav-scrolled {
  background-color: rgba(44, 44, 44, 0.97) !important;
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.15);
}

.nav-scrolled .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
}

.nav-scrolled #logo-text,
.nav-scrolled #logo-subtext {
  color: #ffffff !important;
}

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

body.menu-open {
  overflow: hidden;
}

/* Mobile menu links */
.mobile-nav-link {
  font-family: var(--cormorant);
}

/* Scroll Reveal (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }

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

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--coral);
  color: #ffffff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--stone-100);
}

::-webkit-scrollbar-thumb {
  background: var(--charcoal-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--charcoal-dark);
}