/* Shared across all five pages: reset, fonts, nav bar, theme toggle, keyframes. */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans Armenian', system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--page-text);
  transition: background .25s ease, color .25s ease;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, p { margin: 0; }

/* Brand tokens shared by every theme */
:root {
  --green: #46d63f;
  --green-ink: #1c6b23;
}

/* ---------- top navigation ---------- */
.sitenav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 24px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-line);
  font-size: 14px;
  backdrop-filter: blur(6px);
}
.sitenav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Noto Serif Armenian', Georgia, serif;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--nav-text);
  text-decoration: none;
  white-space: nowrap;
}
.sitenav__brand span { color: var(--green); }
.sitenav__pages {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.sitenav__pages a {
  padding: 8px 12px;
  color: var(--nav-text-dim);
  text-decoration: none;
  border: 1px solid transparent;
}
.sitenav__pages a:hover { color: var(--nav-text); }
.sitenav__pages a.is-active {
  color: var(--nav-text);
  border-color: var(--nav-line);
  background: var(--nav-active-bg);
}
.theme-toggle {
  appearance: none;
  border: 1px solid var(--nav-line);
  background: transparent;
  color: var(--nav-text);
  font: inherit;
  font-size: 13px;
  padding: 8px 12px;
  cursor: pointer;
  white-space: nowrap;
}
.theme-toggle:hover { border-color: var(--green); color: var(--green); }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- keyframes (full spec set from the design reference) ---------- */
@keyframes tilePop { 0%,100% { transform: scale(1); filter: brightness(1); } 50% { transform: scale(1.06); filter: brightness(1.12); } }
@keyframes tileRise { 0% { opacity: 0; transform: translateY(22px); } 100% { opacity: 1; transform: translateY(0); } }
@keyframes barGrow { 0% { transform: scaleX(0); } 100% { transform: scaleX(1); } }
@keyframes marqueeL { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@keyframes marqueeR { 0% { transform: translateX(-50%); } 100% { transform: translateX(0); } }
@keyframes diamondFade { 0%,16% { opacity: 1; } 22%,94% { opacity: 0; } 100% { opacity: 1; } }
@keyframes spinSlow { 0% { transform: rotate(45deg); } 100% { transform: rotate(405deg); } }
@keyframes ruleSweep { 0% { transform: scaleX(0); transform-origin: left; } 55% { transform: scaleX(1); transform-origin: left; } 100% { transform: scaleX(1); transform-origin: left; } }
@keyframes blink { 0%,60% { opacity: 1; } 61%,100% { opacity: .25; } }
@keyframes flipY { 0%, 34% { transform: rotateY(0deg); } 50%, 84% { transform: rotateY(180deg); } 100% { transform: rotateY(360deg); } }
@keyframes wipeIn { 0% { clip-path: inset(0 100% 0 0); } 100% { clip-path: inset(0 0 0 0); } }
@keyframes wordUp { 0% { opacity: 0; transform: translateY(120%) skewY(6deg); } 100% { opacity: 1; transform: translateY(0) skewY(0deg); } }
@keyframes hueSweep { 0% { background-position: 0% 50%; } 100% { background-position: 200% 50%; } }
@keyframes ringSpin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes ringSpinBack { 0% { transform: rotate(360deg); } 100% { transform: rotate(0deg); } }
@keyframes counterRoll { 0% { transform: translateY(0); } 100% { transform: translateY(-85.714%); } }
@keyframes tickerX { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@keyframes beam { 0% { transform: translateX(-120%) skewX(-18deg); } 100% { transform: translateX(320%) skewX(-18deg); } }
@keyframes pavementRun { 0% { background-position: 0 0; } 100% { background-position: 0 1600px; } }
@keyframes planeRoll { 0% { transform: translateY(-80px); } 100% { transform: translateY(0); } }
@keyframes sealSpin { 0% { transform: rotate(0deg); } 100% { transform: rotate(-360deg); } }
@keyframes railSlide { 0%, 22% { transform: translateX(0); } 33%, 55% { transform: translateX(-33.333%); } 66%, 88% { transform: translateX(-66.666%); } 100% { transform: translateX(0); } }
@keyframes horizonGlow { 0%, 100% { opacity: .35; } 50% { opacity: .85; } }

/* entrance animations only play once, triggered on scroll-into-view */
.js .enter-target { opacity: 0; }
.js .enter-target.in-view { opacity: 1; }