:root {
  --navy: #002d74;
  --cyan: #26ace2;
  --orange: #ff8200;
  --light-blue: #7eadd6;
  --ink: #1c2533;
  --muted: #5a6677;
  --line: #e2e8f0;
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 45, 116, 0.08), 0 1px 2px rgba(0, 45, 116, 0.06);
  --font-head: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: Helvetica, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

h1, h2, h3, .lib-header__title { font-family: var(--font-head); }

/* ---------- Header ---------- */
.lib-header {
  background: var(--navy);
  color: #fff;
  padding: 18px 24px;
}
.lib-header__brand { display: flex; align-items: center; gap: 16px; }
.lib-header__logo { height: 40px; width: auto; background: #fff; border-radius: 6px; padding: 6px 8px; }
.lib-header__title { margin: 0; font-size: 1.35rem; font-weight: 600; letter-spacing: 0.2px; }
.lib-header__subtitle { margin: 2px 0 0; font-size: 0.85rem; color: var(--light-blue); }

/* ---------- Sticky controls ---------- */
.controls {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.controls__search {
  flex: 1 1 280px;
  min-width: 200px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
}
.controls__search:focus,
.controls__select:focus { outline: 2px solid var(--cyan); outline-offset: 1px; border-color: var(--cyan); }
.controls__select {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
}
.controls__count {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- Catalog / grid ---------- */
.catalog { padding: 22px 24px 8px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.state {
  padding: 48px 12px;
  text-align: center;
  color: var(--muted);
  font-size: 1rem;
}
.state--error { color: var(--orange); }

/* ---------- Card ---------- */
.card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--light-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  overflow: hidden;
}
.card__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__thumb-placeholder {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.92;
  padding: 0 14px;
  text-align: center;
}
.card__flag {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--orange);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

.card__body { padding: 14px 14px 12px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card__top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.card__code {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.72rem;
  background: var(--navy);
  color: #fff;
  padding: 2px 8px;
  border-radius: 5px;
  letter-spacing: 0.4px;
}
.card__chip {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 20px;
  color: #fff;
}
.card__name { margin: 2px 0 0; font-size: 1rem; font-weight: 600; line-height: 1.3; }
.card__meta { font-size: 0.78rem; color: var(--muted); }
.card__desc {
  font-size: 0.85rem;
  color: var(--ink);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 2px; }
.card__tag {
  font-size: 0.68rem;
  color: var(--navy);
  background: #eaf4fb;
  border: 1px solid #d4e8f6;
  padding: 1px 7px;
  border-radius: 4px;
}
.card__actions { margin-top: auto; padding-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  padding: 7px 12px;
  border-radius: 7px;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary { background: var(--cyan); color: #fff; }
.btn--primary:hover { background: #1b9bcf; }
.btn--ghost { background: #fff; color: var(--navy); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- Footer ---------- */
.lib-footer { padding: 14px 24px 22px; font-size: 0.75rem; color: var(--muted); text-align: center; }

@media (max-width: 540px) {
  .lib-header { padding: 14px 16px; }
  .controls { padding: 12px 16px; }
  .catalog { padding: 16px 16px 4px; }
  .controls__count { margin-left: 0; width: 100%; }
}