/* =========================================
   night.lat — Professional Frame System
   Palette: Deep Navy + Snow White Only
   ========================================= */

:root {
  --navy-0: #020410;        /* Deepest night */
  --navy-1: #050818;        /* Primary background */
  --navy-2: #0a1024;        /* Panel backgrounds */
  --navy-3: #111a35;        /* Elevated surfaces */
  --navy-4: #1a2447;        /* Borders & accents */
  --snow:   #f8f9fa;        /* Snow white text */
  --snow-dim: #b8c0d0;      /* Dimmed snow */
  --snow-ghost: #6a7390;    /* Ghost snow */
  --radius: 2px;
  --frame-border: 1px solid var(--navy-4);
  --frame-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--navy-0);
  color: var(--snow);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", 
               Arial, "Noto Sans", sans-serif;
  font-weight: 300;
  line-height: 1.7;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--snow);
  color: var(--navy-0);
  padding: 12px 20px;
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

/* Subtle star background */
.stars-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background-image: 
    radial-gradient(1px 1px at 20% 30%, rgba(248, 249, 250, 0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 60% 70%, rgba(248, 249, 250, 0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 10%, rgba(248, 249, 250, 0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 80%, rgba(248, 249, 250, 0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 50%, rgba(248, 249, 250, 0.4) 0%, transparent 100%);
  background-size: 200px 200px;
  animation: twinkle 8s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* Header */
.header {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 20px 40px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 2.2rem;
  font-weight: 200;
  letter-spacing: 0.08em;
  color: var(--snow);
}

.logo-moon {
  font-size: 1.8rem;
  filter: drop-shadow(0 0 20px rgba(248, 249, 250, 0.3));
}

.tagline {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--snow-dim);
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* Main */
main {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Multilingual welcome — very small */
.welcome-multilingual {
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--snow-ghost);
  margin: 20px auto 40px;
  max-width: 600px;
  font-weight: 300;
  line-height: 1.8;
}

.welcome-multilingual span {
  opacity: 0.7;
  transition: opacity var(--transition);
}

.welcome-multilingual span:hover {
  opacity: 1;
  color: var(--snow);
}

/* Sky stage */
.sky-stage {
  width: 100%;
  height: 420px;
  background: radial-gradient(ellipse at center bottom, var(--navy-2) 0%, var(--navy-1) 60%, var(--navy-0) 100%);
  border: var(--frame-border);
  border-radius: var(--radius);
  margin: 40px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.sky-stage::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, transparent 0%, transparent 40%, rgba(248, 249, 250, 0.02) 70%, transparent 100%);
  animation: rotate 40s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.sky-placeholder {
  position: relative;
  z-index: 2;
}

.sky-placeholder p {
  font-size: 1.1rem;
  color: var(--snow);
  margin-bottom: 12px;
}

.sky-placeholder .sub {
  font-size: 0.8rem;
  color: var(--snow-ghost);
  font-style: italic;
}

/* Action grid */
.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 40px auto;
}

.action-btn {
  background: var(--navy-2);
  border: var(--frame-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  color: var(--snow);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.action-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--snow), transparent);
  transition: left 0.8s ease;
}

.action-btn:hover,
.action-btn:focus-visible {
  background: var(--navy-3);
  transform: translateY(-2px);
  outline: none;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.action-btn:hover::after,
.action-btn:focus-visible::after {
  left: 100%;
}

.action-btn:focus-visible {
  outline: 2px solid var(--snow);
  outline-offset: 2px;
}

.action-icon {
  font-size: 1.6rem;
  display: block;
  margin-bottom: 12px;
}

.action-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.action-desc {
  display: block;
  font-size: 0.72rem;
  color: var(--snow-ghost);
  font-weight: 300;
}

/* Gift & wish */
.gift-tag, .wish-tag {
  text-align: center;
  margin: 20px auto;
  font-weight: 300;
  color: var(--snow-dim);
}

.gift-tag {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.wish-tag {
  font-size: 0.9rem;
  font-style: italic;
  max-width: 500px;
  padding: 20px;
  border-top: var(--frame-border);
  border-bottom: var(--frame-border);
  margin-top: 40px;
}

/* ================= MODAL SYSTEM ================= */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 4, 16, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -48%);
  width: min(90vw, 720px);
  max-height: 85vh;
  background: var(--navy-1);
  border: var(--frame-border);
  border-radius: var(--radius);
  z-index: 101;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  box-shadow: var(--frame-shadow);
  display: flex;
  flex-direction: column;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: var(--frame-border);
  color: var(--snow);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all var(--transition);
  z-index: 2;
  font-family: inherit;
}

.modal-close:hover,
.modal-close:focus-visible {
  background: var(--navy-3);
  transform: rotate(90deg);
}

.modal-close:focus-visible {
  outline: 2px solid var(--snow);
  outline-offset: 2px;
}

.modal-inner {
  padding: 50px 40px 40px;
  overflow-y: auto;
  flex: 1;
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: var(--frame-border);
  color: var(--snow);
}

.modal-content h3 {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--snow);
  margin: 28px 0 14px;
  padding-left: 12px;
  border-left: 2px solid var(--snow-ghost);
}

.modal-content p {
  font-size: 0.9rem;
  color: var(--snow-dim);
  margin-bottom: 12px;
}

.modal-content ul {
  list-style: none;
  padding: 0;
  margin: 10px 0;
}

.modal-content li {
  font-size: 0.88rem;
  color: var(--snow-dim);
  padding: 8px 0 8px 24px;
  position: relative;
  border-bottom: 1px solid rgba(248, 249, 250, 0.04);
}

.modal-content li::before {
  content: '›';
  position: absolute;
  left: 8px;
  color: var(--snow-ghost);
  font-weight: 300;
}

.modal-content strong {
  color: var(--snow);
  font-weight: 500;
}

.modal-content .highlight-box {
  background: var(--navy-2);
  border: var(--frame-border);
  padding: 20px;
  margin: 20px 0;
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--snow-dim);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.gallery-item {
  aspect-ratio: 1;
  background: var(--navy-3);
  border: var(--frame-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.gallery-item:hover img,
.gallery-item:focus-visible img {
  transform: scale(1.08);
}

.gallery-item.loading::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--navy-3) 0%, var(--navy-2) 50%, var(--navy-3) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.gallery-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(2, 4, 16, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 40px;
}

.gallery-lightbox.active {
  display: flex;
}

.gallery-lightbox img {
  max-width: 90%;
  max-height: 90vh;
  border: var(--frame-border);
  box-shadow: var(--frame-shadow);
}

/* Contact hidden email */
.hidden-email {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--snow);
  background: var(--navy-2);
  padding: 10px 16px;
  border: var(--frame-border);
  border-radius: var(--radius);
  display: inline-block;
  cursor: pointer;
  user-select: all;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.hidden-email:hover {
  background: var(--navy-3);
}

.bluesky-link {
  color: var(--snow);
  text-decoration: none;
  border-bottom: 1px solid var(--snow-ghost);
  transition: all var(--transition);
  padding-bottom: 2px;
}

.bluesky-link:hover,
.bluesky-link:focus-visible {
  border-bottom-color: var(--snow);
  outline: none;
}

.bluesky-link:focus-visible {
  outline: 2px solid var(--snow);
  outline-offset: 4px;
}

/* Credits */
.established-block {
  background: var(--navy-2);
  border: var(--frame-border);
  padding: 24px;
  margin: 20px 0;
  border-radius: var(--radius);
  text-align: center;
}

.established-block .year {
  font-size: 1.8rem;
  font-weight: 200;
  letter-spacing: 0.15em;
  color: var(--snow);
  margin-bottom: 8px;
}

.established-block .label {
  font-size: 0.72rem;
  color: var(--snow-ghost);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Footer */
.footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
  font-size: 0.75rem;
  color: var(--snow-ghost);
  letter-spacing: 0.05em;
  border-top: var(--frame-border);
  margin-top: 60px;
}

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

.modal-inner::-webkit-scrollbar-track {
  background: var(--navy-1);
}

.modal-inner::-webkit-scrollbar-thumb {
  background: var(--navy-4);
  border-radius: var(--radius);
}

/* Accessibility: reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast support */
@media (prefers-contrast: high) {
  :root {
    --snow: #ffffff;
    --snow-dim: #e0e0e0;
    --snow-ghost: #a0a0a0;
  }
}

/* Responsive */
@media (max-width: 640px) {
  .header { padding: 60px 20px 30px; }
  .logo { font-size: 1.6rem; gap: 10px; }
  .tagline { font-size: 0.8rem; }
  .sky-stage { height: 300px; }
  .action-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .action-btn { padding: 20px 12px; }
  .action-icon { font-size: 1.3rem; margin-bottom: 8px; }
  .action-title { font-size: 0.82rem; }
  .action-desc { font-size: 0.65rem; }
  .modal-inner { padding: 40px 24px 28px; }
  .modal-title { font-size: 1.1rem; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}