:root {
  --color-blue: #3d6d95;
  --color-blue-dark: #2f5679;
  --color-blue-darker: #1f3a52;
  --color-gold: #f0b429;
  --color-gold-dim: #d9d9d9;
  --color-text: #1c2733;
  --color-text-soft: #5b6b78;
  --color-border: #e6e9ec;
  --color-bg: #ffffff;
  --color-bg-soft: #f7f8f9;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-full: 999px;
  --shadow-card: 0 1px 3px rgba(20, 30, 40, 0.08);
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 480px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg-soft);
  color: var(--color-text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

button {
  font-family: inherit;
  cursor: pointer;
}

/* ===================== STATE SCREENS ===================== */
.state-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  gap: 10px;
}

.state-screen h2 {
  margin: 4px 0 0;
  font-size: 1.25rem;
}

.state-screen p {
  color: var(--color-text-soft);
  max-width: 320px;
  margin: 0;
}

.state-icon {
  font-size: 2.4rem;
  margin-bottom: 4px;
}

.spinner {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-blue);
  animation: spin 0.8s linear infinite;
}

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

.btn-primary {
  margin-top: 8px;
  background: var(--color-blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--color-blue-dark); }

/* ===================== APP SHELL ===================== */
.app {
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.25s ease;
}

@media (min-width: 900px) {
  .app {
    max-width: 720px;
    margin: 24px auto;
    min-height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    border: 1px solid var(--color-border);
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 6px;
}

.header-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--color-text);
  display: inline-flex;
  padding: 4px;
}

.lot-main {
  padding: 4px 20px 28px;
  flex: 1;
}

/* ===================== LOT TOP ===================== */
.lot-top {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding-top: 8px;
}

.lot-number-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.lot-number {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-text);
}

.lot-number-label {
  font-size: 0.8rem;
  color: var(--color-text-soft);
  margin-top: 2px;
}

.lot-meta {
  display: flex;
  flex-direction: column;
  padding-top: 6px;
  gap: 2px;
}

.meta-line {
  font-size: 0.95rem;
  color: var(--color-text);
}

.meta-line:empty { display: none; }

/* ===================== LOT IDENTITY ===================== */
.lot-identity {
  text-align: center;
  margin-top: 22px;
}

.lot-name {
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0;
}

.lot-breed {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 2px 0 0;
}

/* ===================== ACTION BUTTONS ===================== */
.lot-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
}

.btn-blue {
  background: var(--color-blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: 12px 0;
  width: 100%;
  max-width: 320px;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.15s ease, transform 0.1s ease;
}

.btn-blue:hover { background: var(--color-blue-dark); }
.btn-blue:active { transform: scale(0.98); }

.links-carousel {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 320px;
}

.links-label {
  flex: 1;
}

.carousel-arrow {
  background: none;
  border: none;
  color: var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  flex-shrink: 0;
}
.carousel-arrow:disabled {
  color: var(--color-gold-dim);
  cursor: default;
}

/* ===================== MEDIA GRID ===================== */
.media-section { margin-top: 22px; }

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.media-tile {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.media-tile img,
.media-tile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-tile.is-video::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at center, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.15) 40%, transparent 41%);
}

.media-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  color: #fff;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}

.media-tile.is-error {
  border: 1px solid #f3a6a6;
  background: repeating-linear-gradient(45deg, #fff5f5, #fff5f5 8px, #fdeaea 8px, #fdeaea 16px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #c0392b;
  font-size: 0.7rem;
  padding: 6px;
  cursor: default;
}

/* ===================== CONTENT SECTIONS ===================== */
.content-section {
  margin-top: 26px;
}

.section-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
  margin: 0 0 10px;
}

.section-body {
  margin: 0;
  line-height: 1.55;
  font-size: 0.98rem;
  white-space: pre-line;
}

.specs-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin: 0;
}

.specs-list div.spec-item {
  display: contents;
}

.specs-list dt {
  font-size: 0.8rem;
  color: var(--color-text-soft);
  grid-column: 1;
}

.specs-list dd {
  font-size: 0.92rem;
  font-weight: 600;
  margin: 0;
  grid-column: 2;
  text-align: right;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.92rem;
}
.spec-row:last-child { border-bottom: none; }
.spec-row .spec-key { color: var(--color-text-soft); }
.spec-row .spec-value { font-weight: 600; }

.seller-info, .bid-info {
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.seller-info .row, .bid-info .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.seller-info .row span:first-child, .bid-info .row span:first-child {
  color: var(--color-text-soft);
}

.documents-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.documents-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-blue-darker);
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: background 0.15s ease;
}
.documents-list a:hover { background: #eef1f3; }

/* ===================== BOTTOM BAR ===================== */
.bottom-bar {
  height: 46px;
  background: var(--color-blue);
  margin-top: 30px;
}

/* ===================== LIGHTBOX ===================== */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 18, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.15s ease;
}

.lightbox-img {
  max-width: 92vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 6px;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
}

.lightbox-nav {
  background: none;
  border: none;
  color: #fff;
  font-size: 2.6rem;
  padding: 10px 16px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox-prev { left: 6px; }
.lightbox-next { right: 6px; }

.video-wrap {
  width: min(92vw, 640px);
}

#video-player {
  width: 100%;
  border-radius: 8px;
  background: #000;
}

/* ===================== LINK POPUP ===================== */
.link-popup {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 18, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.link-popup-track {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  max-width: var(--max-width);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 0 44px;
  scrollbar-width: none;
  cursor: grab;
}
.link-popup-track::-webkit-scrollbar { display: none; }

.link-popup-track.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  scroll-snap-type: none;
  user-select: none;
}

.link-popup-card {
  flex: 0 0 auto;
  scroll-snap-align: center;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 18px 20px 20px;
  width: 78%;
  max-width: 260px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  transform: scale(0.94);
  transition: transform 0.25s ease;
  position: relative;
  z-index: 1;
}

.link-popup-card.is-active {
  transform: scale(1.06);
  z-index: 2;
}

.link-popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  margin-bottom: 14px;
}

.btn-outline {
  display: block;
  text-align: center;
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  border-radius: var(--radius-md);
  padding: 9px 0;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: background 0.15s ease;
}
.btn-outline:hover { background: #eef4f9; }

/* ===================== RESPONSIVE TWEAKS ===================== */
@media (min-width: 640px) {
  .lot-main { padding: 4px 40px 36px; }
  .media-grid { grid-template-columns: repeat(4, 1fr); }
}