/* ============================================
   Tennessee Valley Neuro — Custom Styles
   ============================================ */

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

body {
  overflow-x: hidden;
}

::selection {
  background: #8B1A3A;
  color: #FFF5F3;
}

/* Navigation */
.nav-scrolled {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(253, 248, 246, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(232, 213, 210, 0.5);
  transition: all 0.4s cubic-bezier(0.32, 0.72, 0, 1);
}

.nav-scrolled .nav-line {
  background: #1A1416;
}

/* Mobile Menu */
.mobile-menu {
  z-index: 200;
}

.mobile-menu-link {
  position: relative;
}

.mobile-menu-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: #8B1A3A;
  transition: width 0.3s ease;
}

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

/* Hero Animations */
.hero-title {
  opacity: 0;
  transform: translateY(30px);
  animation: heroReveal 0.9s cubic-bezier(0.32, 0.72, 0, 1) 0.2s forwards;
}

.hero-subtitle {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.7s cubic-bezier(0.32, 0.72, 0, 1) 0.5s forwards;
}

.hero-desc {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.7s cubic-bezier(0.32, 0.72, 0, 1) 0.65s forwards;
}

.hero-cta {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.7s cubic-bezier(0.32, 0.72, 0, 1) 0.8s forwards;
}

.hero-stats {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.7s cubic-bezier(0.32, 0.72, 0, 1) 0.95s forwards;
}

.hero-image {
  opacity: 0;
  transform: scale(1.05);
  animation: heroImageReveal 1.2s cubic-bezier(0.32, 0.72, 0, 1) 0.1s forwards;
}

@keyframes heroReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroImageReveal {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scroll indicator */
.scroll-line {
  animation: scrollDown 1.8s cubic-bezier(0.32, 0.72, 0, 1) infinite;
}

@keyframes scrollDown {
  0% {
    top: -16px;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    top: 48px;
    opacity: 0;
  }
}

/* Section Label */
.section-label {
  display: block;
}

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

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #8B1A3A;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.32, 0.72, 0, 1);
}

.service-card:hover::before {
  transform: scaleX(1);
}

/* Form Inputs */
.form-input {
  outline: none;
}

.form-input:focus {
  border-color: #8B1A3A !important;
}

.form-input::placeholder {
  color: rgba(26, 20, 22, 0.2);
}

/* Form Submit */
.form-submit {
  position: relative;
  overflow: hidden;
}

.form-submit::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.form-submit:hover::before {
  left: 100%;
}

/* Scroll Reveal */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.32, 0.72, 0, 1),
              transform 0.7s cubic-bezier(0.32, 0.72, 0, 1);
}

.reveal.revealed {
  opacity: 0;
  transform: translateY(30px);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
  }

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

/* Staggered reveal delays */
.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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #FDF8F6;
}

::-webkit-scrollbar-thumb {
  background: #E8D5D2;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #8B1A3A;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #8B1A3A;
  outline-offset: 2px;
  border-radius: 2px;
}

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

  .hero-title,
  .hero-subtitle,
  .hero-desc,
  .hero-cta,
  .hero-stats,
  .hero-image {
    opacity: 1;
    transform: none;
    animation: none;
  }

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

  .scroll-line {
    animation: none;
    top: 0;
    opacity: 1;
  }
}