:root {
  --ink: #0a0d12;
  --bone: #f4ede1;
  --clay: #c55a2d;
  --andean: #1e3a5f;
}

html { scroll-behavior: smooth; }

body {
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "kern";
}

/* ============ GRAIN ============ */
.grain {
  background-image:
    radial-gradient(rgba(0,0,0,0.5) 1px, transparent 1px),
    radial-gradient(rgba(0,0,0,0.3) 1px, transparent 1px);
  background-size: 3px 3px, 5px 5px;
  background-position: 0 0, 1px 1px;
}

/* ============ NAV ============ */
#nav.scrolled {
  background: rgba(10, 13, 18, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(244, 237, 225, 0.07);
}

.lang-btn.active-lang {
  color: var(--clay);
  font-weight: 600;
}

/* ============ HERO ============ */
.scroll-line {
  animation: scrollLine 2.4s ease-in-out infinite;
  transform-origin: left;
}
@keyframes scrollLine {
  0% { transform: scaleX(0); transform-origin: left; }
  50% { transform: scaleX(1); transform-origin: left; }
  51% { transform: scaleX(1); transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}

/* ============ MARQUEE ============ */
.marquee {
  animation: marquee 60s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============ FILTER BUTTONS ============ */
.filter-btn {
  padding: 0.6rem 1.2rem;
  border: 1px solid rgba(244, 237, 225, 0.2);
  color: rgba(244, 237, 225, 0.7);
  background: transparent;
  transition: all 0.3s ease;
  cursor: pointer;
}
.filter-btn:hover {
  color: var(--bone);
  border-color: rgba(244, 237, 225, 0.5);
}
.filter-btn.active {
  background: var(--clay);
  border-color: var(--clay);
  color: var(--bone);
}

/* ============ EXPERIENCE CARDS ============ */
.exp-card {
  transition: opacity 0.5s ease, transform 0.6s ease;
}
.exp-card.hidden-filter {
  display: none;
}
.exp-card-inner {
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.exp-card-inner:hover {
  transform: translateY(-4px);
}

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============ MODAL ============ */
#expModal.open {
  display: block;
}
.modal-backdrop {
  opacity: 0;
  transition: opacity 0.4s ease;
}
#expModal.open .modal-backdrop {
  opacity: 1;
}
.modal-panel {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
#expModal.open .modal-panel {
  opacity: 1;
  transform: translateY(0);
}

body.modal-open {
  overflow: hidden;
}

/* Modal content styling */
.modal-hero {
  position: relative;
  aspect-ratio: 16 / 8;
  overflow: hidden;
  background: var(--ink);
}
.modal-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}
.modal-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,13,18,0.85) 0%, rgba(10,13,18,0.2) 50%, rgba(10,13,18,0.4) 100%);
}

.modal-content {
  padding: 2rem 1.5rem;
}
@media (min-width: 768px) {
  .modal-content { padding: 3rem 3.5rem; }
}

.info-box {
  border: 1px solid rgba(10, 13, 18, 0.1);
  padding: 1.5rem;
}
.info-box .label {
  font-family: "Geist Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 0.75rem;
}
.info-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
}
.info-box ul li {
  padding-left: 1rem;
  position: relative;
  margin-bottom: 0.4rem;
  color: rgba(10, 13, 18, 0.8);
}
.info-box ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--clay);
}

/* ============ MOBILE NAV ============ */
#mobileNav.open {
  transform: translateX(0);
}

/* ============ UTILITIES ============ */
.serif-italic {
  font-family: "Instrument Serif", serif;
  font-style: italic;
}

/* Image lazy fade */
img {
  transition: opacity 0.5s ease;
}
img[loading="lazy"] {
  opacity: 0;
}
img[loading="lazy"].loaded {
  opacity: 1;
}

/* Selection */
::selection {
  background: var(--clay);
  color: var(--bone);
}

/* Scrollbar (subtle) */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bone);
}
::-webkit-scrollbar-thumb {
  background: var(--ink);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--clay);
}

/* Disable scroll behavior when user prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .exp-card-inner, img, .modal-backdrop, .modal-panel { transition: none !important; }
  .marquee, .scroll-line { animation: none !important; }
}