/* ==========================================================================
   NASA MEDIA EXPLORER — orient-luxury design system
   Near-black base, gold accent stack, grain overlay, parchment light mode.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;600;700&family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Syne:wght@500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ---------- Design tokens ---------- */
:root {
  --ol-font-display: 'Cinzel', serif;
  --ol-font-body: 'Cormorant Garamond', serif;
  --ol-font-ui: 'Syne', sans-serif;
  --ol-font-mono: 'IBM Plex Mono', monospace;

  --ol-radius: 2px;
  --ol-border-w: 1px;
  --ol-max-width: 1280px;
  --ol-space-1: 0.4rem;
  --ol-space-2: 0.8rem;
  --ol-space-3: 1.6rem;
  --ol-space-4: 2.4rem;
  --ol-space-5: 4rem;

  --ol-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ol-dur: 420ms;
}

:root,
html[data-theme="dark"] {
  --ol-bg: #09080b;
  --ol-bg-elevated: #121016;
  --ol-bg-card: #15131a;
  --ol-hairline: rgba(201, 168, 76, 0.18);

  --ol-gold-100: #c9a84c;
  --ol-gold-80: rgba(201, 168, 76, 0.8);
  --ol-gold-60: rgba(201, 168, 76, 0.6);
  --ol-gold-40: rgba(201, 168, 76, 0.4);
  --ol-gold-20: rgba(201, 168, 76, 0.16);
  --ol-gold-dark: #8a6820;

  --ol-text: #ede7da;
  --ol-text-dim: rgba(237, 231, 218, 0.66);
  --ol-text-faint: rgba(237, 231, 218, 0.4);

  --ol-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --ol-grain-opacity: 0.05;
  --ol-scrim: rgba(9, 8, 11, 0.88);
}

html[data-theme="light"] {
  --ol-bg: #f0ebe0;
  --ol-bg-elevated: #f2ede8;
  --ol-bg-card: #fbf8f2;
  --ol-hairline: rgba(138, 104, 32, 0.28);

  --ol-gold-100: #8a6820;
  --ol-gold-80: rgba(138, 104, 32, 0.85);
  --ol-gold-60: rgba(138, 104, 32, 0.6);
  --ol-gold-40: rgba(138, 104, 32, 0.35);
  --ol-gold-20: rgba(138, 104, 32, 0.14);
  --ol-gold-dark: #6b4f18;

  --ol-text: #211c14;
  --ol-text-dim: rgba(33, 28, 20, 0.68);
  --ol-text-faint: rgba(33, 28, 20, 0.46);

  --ol-shadow: 0 24px 60px -24px rgba(90, 70, 30, 0.28);
  --ol-grain-opacity: 0.035;
  --ol-scrim: rgba(240, 235, 224, 0.92);
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--ol-bg);
  color: var(--ol-text);
  font-family: var(--ol-font-body);
  font-size: 18px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--ol-dur) var(--ol-ease), color var(--ol-dur) var(--ol-ease);
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: var(--ol-gold-100); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3 { font-family: var(--ol-font-display); font-weight: 600; margin: 0; letter-spacing: 0.02em; }

/* ---------- Grain overlay ---------- */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: var(--ol-grain-opacity);
}

/* ---------- Layout shell ---------- */
.shell {
  max-width: var(--ol-max-width);
  margin: 0 auto;
  padding: 0 var(--ol-space-3);
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: var(--ol-border-w) solid var(--ol-hairline);
  background: linear-gradient(180deg, var(--ol-bg-elevated), transparent);
}
.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--ol-space-3);
  padding-bottom: var(--ol-space-3);
  gap: var(--ol-space-2);
}
.wordmark { display: flex; flex-direction: column; gap: 2px; }
.app-like-trigger {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 6px;
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-hairline);
  border-radius: 20px;
  padding: 2px 10px;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--ol-text-dim);
  cursor: pointer;
  margin-top: 4px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.app-like-trigger:hover:not(:disabled) {
  color: #c9604c;
  border-color: #c9604c;
  background: var(--ol-gold-20);
  transform: scale(1.05);
}
.app-like-trigger.liked {
  color: var(--ol-gold-100);
  border-color: var(--ol-gold-100);
  background: var(--ol-gold-20);
  cursor: not-allowed;
}
.app-like-trigger:disabled:not(.liked) {
  opacity: 0.6;
  cursor: not-allowed;
}
.wordmark .mark {
  font-family: var(--ol-font-display);
  font-size: 1.5rem;
  letter-spacing: 0.14em;
  color: var(--ol-text);
}
.wordmark .tagline {
  font-family: var(--ol-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ol-gold-100);
}
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: var(--ol-border-w) solid var(--ol-hairline);
  background: var(--ol-bg-card);
  color: var(--ol-gold-100);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 200ms var(--ol-ease), transform 200ms var(--ol-ease);
}
.icon-btn:hover { border-color: var(--ol-gold-60); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn .icon-moon { display: block; }
.icon-btn .icon-sun { display: none; }
html[data-theme="light"] .icon-btn .icon-moon { display: none; }
html[data-theme="light"] .icon-btn .icon-sun { display: block; }

/* ---------- Search hero ---------- */
.search-hero {
  padding: var(--ol-space-4) 0 var(--ol-space-3);
}
.search-hero h1 {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  margin-bottom: var(--ol-space-1);
}
.search-hero .sub {
  font-family: var(--ol-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ol-text-faint);
  margin-bottom: var(--ol-space-3);
}
.search-form {
  display: flex;
  gap: var(--ol-space-2);
  margin-bottom: var(--ol-space-3);
}
.search-input {
  flex: 1;
  font-family: var(--ol-font-body);
  font-size: 1.15rem;
  background: var(--ol-bg-card);
  color: var(--ol-text);
  border: var(--ol-border-w) solid var(--ol-hairline);
  border-radius: var(--ol-radius);
  padding: 0.85rem 1.1rem;
}
.search-input:focus { border-color: var(--ol-gold-60); outline: none; }
.search-submit {
  font-family: var(--ol-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--ol-gold-100);
  color: var(--ol-bg);
  border: none;
  border-radius: var(--ol-radius);
  padding: 0 1.6rem;
  transition: opacity 200ms var(--ol-ease);
}
.search-submit:hover { opacity: 0.86; }

.chip-row {
  display: flex;
  gap: var(--ol-space-1);
  flex-wrap: wrap;
}
.chip {
  font-family: var(--ol-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  border: var(--ol-border-w) solid var(--ol-hairline);
  color: var(--ol-text-dim);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  transition: border-color 200ms var(--ol-ease), color 200ms var(--ol-ease), background 200ms var(--ol-ease);
}
.chip:hover { border-color: var(--ol-gold-60); color: var(--ol-text); }
.chip.is-active {
  background: var(--ol-gold-20);
  border-color: var(--ol-gold-80);
  color: var(--ol-gold-100);
}

/* ---------- Results meta ---------- */
.results-meta {
  font-family: var(--ol-font-mono);
  font-size: 0.78rem;
  color: var(--ol-text-faint);
  padding: var(--ol-space-2) 0;
  border-top: var(--ol-border-w) solid var(--ol-hairline);
  border-bottom: var(--ol-border-w) solid var(--ol-hairline);
  margin-bottom: var(--ol-space-3);
}

/* ---------- Media grid ---------- */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--ol-space-2);
  padding-bottom: var(--ol-space-3);
}
.media-card {
  position: relative;
  border: var(--ol-border-w) solid var(--ol-hairline);
  background: var(--ol-bg-card);
  border-radius: var(--ol-radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 220ms var(--ol-ease), transform 220ms var(--ol-ease);
  aspect-ratio: 4 / 3;
}
.media-card:hover { border-color: var(--ol-gold-60); transform: translateY(-2px); }
.media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-card .type-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-family: var(--ol-font-ui);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(9, 8, 11, 0.72);
  color: #f0ebe0;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.media-card .play-icon {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 46px; height: 46px;
  border-radius: 50%;
  background: rgba(9, 8, 11, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f0ebe0;
  opacity: 0;
  transition: opacity 200ms var(--ol-ease);
}
.media-card:hover .play-icon { opacity: 1; }
.media-card .card-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 0.6rem 0.7rem;
  background: linear-gradient(0deg, rgba(0,0,0,0.78), transparent);
  font-family: var(--ol-font-ui);
  font-size: 0.76rem;
  color: #f4efe2;
  line-height: 1.3;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 220ms var(--ol-ease), transform 220ms var(--ol-ease);
}
.media-card:hover .card-caption { opacity: 1; transform: translateY(0); }

/* ---------- Skeleton cards ---------- */
.media-card.is-skeleton {
  background:
    linear-gradient(110deg, var(--ol-bg-card) 8%, var(--ol-bg-elevated) 18%, var(--ol-bg-card) 33%);
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: var(--ol-space-5) var(--ol-space-3);
  color: var(--ol-text-dim);
}
.empty-state h3 { color: var(--ol-gold-100); margin-bottom: var(--ol-space-1); font-size: 1.3rem; }
.empty-state p { font-size: 1.05rem; }

/* ---------- Load more ---------- */
.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: var(--ol-space-2) 0 var(--ol-space-5);
}
.pill-btn {
  font-family: var(--ol-font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: transparent;
  border: var(--ol-border-w) solid var(--ol-gold-40);
  color: var(--ol-gold-100);
  border-radius: 999px;
  padding: 0.6rem 1.6rem;
  transition: background 200ms var(--ol-ease), border-color 200ms var(--ol-ease);
}
.pill-btn:hover { background: var(--ol-gold-20); border-color: var(--ol-gold-80); }
.pill-btn.is-loading { opacity: 0.6; pointer-events: none; }
.pill-btn:disabled { opacity: 0.35; pointer-events: none; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 998;
  background: var(--ol-scrim);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--ol-space-3);
  overflow-y: auto;
}
.lightbox.is-open { display: flex; }
.lightbox-panel {
  max-width: 1080px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 0;
  background: var(--ol-bg-card);
  border: var(--ol-border-w) solid var(--ol-hairline);
  border-radius: var(--ol-radius);
  box-shadow: var(--ol-shadow);
  overflow: hidden;
  max-height: 88vh;
}
@media (max-width: 820px) {
  .lightbox-panel { grid-template-columns: 1fr; max-height: none; }
}
.lightbox-media {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  max-height: 88vh;
  overflow: hidden;
}
.lightbox-media img,
.lightbox-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-height: 88vh;
}
.lightbox-media audio { width: 90%; }
.lightbox-info {
  padding: var(--ol-space-3);
  overflow-y: auto;
  position: relative;
}
.lightbox-close {
  position: absolute;
  top: var(--ol-space-2);
  right: var(--ol-space-2);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: var(--ol-border-w) solid var(--ol-hairline);
  background: var(--ol-bg-elevated);
  color: var(--ol-text);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-close:hover { border-color: var(--ol-gold-60); }

/* Archive ticket (signature element) */
.ticket-id {
  font-family: var(--ol-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ol-gold-100);
  margin-bottom: var(--ol-space-1);
}
.ticket-title {
  font-size: 1.3rem;
  margin-bottom: var(--ol-space-2);
  padding-right: var(--ol-space-3);
}
.ticket-desc {
  font-size: 1.02rem;
  color: var(--ol-text-dim);
  margin-bottom: var(--ol-space-3);
  max-height: 220px;
  overflow-y: auto;
}
.ticket-log { border-top: var(--ol-border-w) solid var(--ol-hairline); }
.log-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.55rem 0;
  border-bottom: var(--ol-border-w) dashed var(--ol-hairline);
  gap: var(--ol-space-2);
}
.log-row .log-label {
  font-family: var(--ol-font-ui);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ol-text-faint);
  white-space: nowrap;
}
.log-row .log-value {
  font-family: var(--ol-font-mono);
  font-size: 0.82rem;
  color: var(--ol-text);
  text-align: right;
  word-break: break-word;
}
.download-row { margin-top: var(--ol-space-3); }
.download-link {
  display: inline-block;
  font-family: var(--ol-font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: var(--ol-border-w) solid var(--ol-gold-40);
  color: var(--ol-gold-100);
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
}
.download-link:hover { background: var(--ol-gold-20); text-decoration: none; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: var(--ol-border-w) solid var(--ol-hairline);
  padding: var(--ol-space-3) 0 var(--ol-space-5);
}
.site-footer .shell {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--ol-space-2);
  font-family: var(--ol-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ol-text-faint);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: var(--ol-space-3);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 1000;
  background: var(--ol-bg-card);
  border: var(--ol-border-w) solid var(--ol-gold-40);
  color: var(--ol-text);
  font-family: var(--ol-font-ui);
  font-size: 0.82rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--ol-radius);
  box-shadow: var(--ol-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms var(--ol-ease), transform 260ms var(--ol-ease);
  max-width: 90vw;
}
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Focus & motion ---------- */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--ol-gold-100);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Small screens ---------- */
@media (max-width: 520px) {
  body { font-size: 16.5px; }
  .wordmark .mark { font-size: 1.25rem; }
  .search-form { flex-direction: column; }
  .media-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}