/* Base & Reset */
*, *::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;
}

::selection {
  background: rgba(251, 113, 133, 0.2);
  color: #fbc4ce;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #111827;
}
::-webkit-scrollbar-thumb {
  background: #374151;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #FB7185;
}

/* Animations */
@keyframes scrollDown {
  0% { top: -50%; opacity: 0; }
  50% { opacity: 1; }
  100% { top: 150%; opacity: 0; }
}

.scroll-line {
  animation: scrollDown 1.5s ease-in-out infinite;
}

/* Hero animations */
.hero-title {
  animation: heroTitleIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-subtitle {
  animation: heroSubtitleIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-desc {
  animation: heroDescIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-cta {
  animation: heroCtaIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-image-wrapper {
  animation: heroImageIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes heroTitleIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroSubtitleIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroDescIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroCtaIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroImageIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* Navbar */
#navbar {
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease;
}

#navbar.scrolled {
  background: rgba(10, 15, 24, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(55, 65, 81, 0.3);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #FB7185;
  transition: width 0.3s ease;
}

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

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

.mobile-link {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

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

/* Form focus states */
input:focus, textarea:focus {
  border-color: #FB7185 !important;
}

input:focus + label, textarea:focus + label {
  color: #FB7185;
}

/* Image hover zoom wrapper */
.group:hover img {
  transform: scale(1.05);
}

/* Smooth section transitions */
section {
  position: relative;
}

/* Button press effect */
button, a {
  -webkit-tap-highlight-color: transparent;
}

button:active {
  transform: scale(0.98);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .font-serif {
    line-height: 1.1;
  }
}

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