/* AILatest Grant — clean search surface */
:root {
  --paper:          #fffdf9;
  --paper-soft:     #f9f6ef;
  --ink:            #27231f;
  --ink-soft:       #514b45;
  --ink-faint:      #756f68;
  --rule:           #ded8cf;
  --rule-soft:      #ece7df;
  --accent:         #f97316;
  --accent-soft:    #fb8a35;
  --deep:           #1f3a5f;
  --sans:  -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', sans-serif;
  --mono:  'SFMono-Regular', Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body {
  background-image:
    radial-gradient(ellipse 680px 440px at 52% 18%, rgba(249,115,22,.13), transparent 72%),
    radial-gradient(ellipse 780px 520px at 86% 80%, rgba(31,44,76,.055), transparent 72%);
  background-attachment: fixed;
  background-repeat: no-repeat, no-repeat;
  background-size: cover, cover;
  min-height: 100vh;
}

/* Header */
.header {
  text-align: center;
  padding: 50px 20px 20px;
}
.brand {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 0;
}
.brand-ai { color: var(--accent); }
.brand-sub {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 600;
}

/* Search */
.search-wrap {
  max-width: 640px;
  margin: 20px auto;
  padding: 0 16px;
}
.search-box {
  display: flex;
  gap: 0;
  border: 1.5px solid var(--rule);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(39,35,31,.06);
  transition: box-shadow .15s, border-color .15s;
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(249,115,22,.12);
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  padding: 13px 16px;
  font-size: 15px;
  font-family: var(--sans);
  color: var(--ink);
  background: transparent;
}
.search-box button {
  padding: 13px 22px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--sans);
  transition: background .15s;
}
.search-box button:hover { background: #e8650a; }

/* Filters */
.filters {
  max-width: 640px;
  margin: 12px auto 0;
  padding: 0 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-btn {
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: #fff;
  color: var(--ink-soft);
  font-size: 13px;
  cursor: pointer;
  font-family: var(--sans);
  transition: all .12s;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* Results */
.results {
  max-width: 820px;
  margin: 20px auto;
  padding: 0 16px 60px;
}
.results-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding: 10px 14px;
  background: #f5ecd6;
  border: 1px solid #d4c9a8;
  border-radius: 6px;
}
.results-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--sans);
}
.count {
  font-size: 12px;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

/* Project cards */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.project-card {
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
  cursor: pointer;
  transition: box-shadow .12s, border-color .12s;
}
.project-card:hover {
  border-color: var(--accent-soft);
  box-shadow: 0 2px 10px rgba(249,115,22,.08);
}
.project-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 6px;
}
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  color: var(--ink-soft);
}
.project-meta span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.project-meta .label {
  color: var(--ink-faint);
  font-weight: 600;
}
.project-meta .cat-badge {
  padding: 1px 7px;
  border-radius: 4px;
  background: #fff4e8;
  color: #7b4a24;
  font-size: 11px;
  font-weight: 700;
}
.project-meta .source-badge {
  padding: 1px 7px;
  border-radius: 4px;
  background: #e8efff;
  color: #1d4f8a;
  font-size: 11px;
  font-weight: 700;
}
.source-info {
  max-width: 820px;
  margin: 8px auto 0;
  padding: 0 16px;
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
}

/* Detail drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0,0,0,.32);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(520px, 92vw);
  height: 100vh;
  z-index: 110;
  background: #fff;
  box-shadow: -12px 0 40px rgba(0,0,0,.1);
  transform: translateX(100%);
  transition: transform .25s ease;
  overflow-y: auto;
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--rule-soft);
  backdrop-filter: blur(8px);
}
.drawer-close {
  width: 32px; height: 32px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.drawer-body { padding: 18px; }
.drawer-title { font-size: 18px; font-weight: 800; line-height: 1.35; margin-bottom: 14px; }
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}
.detail-item {
  padding: 10px;
  background: var(--paper-soft);
  border-radius: 6px;
}
.detail-item label {
  display: block;
  font-size: 11px;
  color: var(--ink-faint);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 3px;
}
.detail-item .value {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
}

/* Mobile */
@media (max-width: 768px) {
  .header { padding: 30px 16px 16px; }
  .brand { font-size: 26px; }
  .project-card { padding: 12px 14px; }
  .project-title { font-size: 14px; }
  .detail-grid { grid-template-columns: 1fr; }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-faint);
}
.empty-state .icon { font-size: 40px; margin-bottom: 10px; }
.empty-state p { font-size: 14px; margin: 0; }