/* ============================================
   Eidan Erlich — Minimalist Personal Website
   Custom styles & overrides
   ============================================ */

/* Base reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: #000;
  color: #fafafa;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
}

/* Links */
a {
  color: #fafafa;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.6;
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background-color: #000;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.nav-overlay a {
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 300;
}

/* Hamburger button — visibility controlled by Tailwind (flex md:hidden) */
.hamburger {
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 200;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: #fafafa;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Divider lines for work/publication entries */
.entry-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Page fade-in */
.page-fade {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Active nav link */
nav a.active-link,
.nav-overlay a.active-link {
  opacity: 0.5;
}

/* Selection color */
::selection {
  background-color: #fafafa;
  color: #000;
}

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

::-webkit-scrollbar-track {
  background: #000;
}

::-webkit-scrollbar-thumb {
  background: #333;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}