:root {
  --navy-deep: #081b30;
  --navy: #0f2c4c;
  --navy-mid: #163b60;
  --line: rgba(232, 228, 216, 0.14);
  --line-strong: rgba(232, 228, 216, 0.28);
  --paper: #f4f1e8;
  --paper-dim: rgba(244, 241, 232, 0.68);
  --amber: #f2a65a;
  --amber-dim: rgba(242, 166, 90, 0.16);
  --teal: #5fa8a0;
  --teal-dim: rgba(95, 168, 160, 0.16);
  --red: #e08585;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-sans: "IBM Plex Sans", -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--navy);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 24px; }
.page { padding: 40px 24px 80px; position: relative; z-index: 1; }

a { color: inherit; }

h1, h2, h3 { font-family: var(--font-mono); font-weight: 600; margin: 0 0 16px; }

.grid-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.5;
}

.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(8, 27, 48, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; flex-wrap: wrap; gap: 12px; }
.wordmark { font-family: var(--font-mono); font-weight: 600; text-decoration: none; color: var(--paper); }
.wordmark-dot { color: var(--amber); font-size: 13px; }
.main-nav { display: flex; gap: 20px; font-size: 14px; }
.main-nav a { text-decoration: none; color: var(--paper-dim); }
.main-nav a:hover { color: var(--paper); }
.logout-form { margin: 0; }
.logout-btn { background: none; border: 0; padding: 0; font: inherit; color: var(--paper-dim); cursor: pointer; }
.logout-btn:hover { color: var(--paper); }

.messages { list-style: none; padding: 0; margin: 0 0 24px; }
.message { font-family: var(--font-mono); font-size: 13px; padding: 10px 14px; border-radius: 4px; margin-bottom: 8px; border: 1px solid; }
.message-success { color: var(--teal); border-color: var(--teal); background: var(--teal-dim); }
.message-error { color: var(--red); border-color: var(--red); background: rgba(224,133,133,0.12); }
.message-info { color: var(--paper-dim); border-color: var(--line-strong); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 4px;
  font-family: var(--font-mono); font-size: 14px; font-weight: 500;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--amber); color: var(--navy-deep); }
.btn-ghost { background: transparent; border-color: var(--line-strong); color: var(--paper); }
.btn-danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn-small { padding: 8px 14px; font-size: 13px; }

.card {
  background: var(--navy-mid); border: 1px solid var(--line);
  border-radius: 6px; padding: 20px; margin-bottom: 16px;
}

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.filter-pill {
  font-family: var(--font-mono); font-size: 12px; text-decoration: none;
  padding: 6px 14px; border-radius: 20px; border: 1px solid var(--line-strong); color: var(--paper-dim);
}
.filter-pill.active { border-color: var(--amber); color: var(--amber); }

.item-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.item-card { display: block; text-decoration: none; color: inherit; }
.item-card img { width: 100%; height: 140px; object-fit: cover; border-radius: 4px; margin-bottom: 10px; background: var(--navy-deep); }
.item-card h3 { font-size: 15px; margin: 0 0 6px; }
.status-tag { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; padding: 3px 8px; border-radius: 20px; border: 1px solid; }
.status-owned { color: var(--teal); border-color: var(--teal); }
.status-lent { color: var(--amber); border-color: var(--amber); }
.status-wishlist { color: var(--paper-dim); border-color: var(--line-strong); }

label { display: block; font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; color: var(--paper-dim); margin: 16px 0 6px; }
label:first-child { margin-top: 0; }
input[type=text], input[type=search], input[type=number], textarea, select {
  width: 100%; background: var(--navy-deep); border: 1px solid var(--line-strong);
  border-radius: 4px; color: var(--paper); font-family: var(--font-sans); font-size: 15px; padding: 10px 12px;
}
textarea { resize: vertical; }

.search-result { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.search-result:last-child { border-bottom: none; }

.share-box { font-family: var(--font-mono); font-size: 13px; color: var(--paper-dim); word-break: break-all; }

.site-footer { border-top: 1px solid var(--line); padding: 24px 0; position: relative; z-index: 1; }
.footer-inner { display: flex; justify-content: center; gap: 10px; font-family: var(--font-mono); font-size: 12px; color: var(--paper-dim); }