/* ===========================
   ATRI Index — style.css
   Light · Ayurveda × Research Technology
   =========================== */

/* --- Variables --- */
:root {
  --green-deep:   #1e5631;
  --green-mid:    #2d7a4f;
  --green-light:  #52b788;
  --green-pale:   #d8f3dc;
  --green-ultra:  #f0faf2;

  --saffron:      #d4892a;
  --saffron-light:#f2c174;
  --saffron-pale: #fdf3e3;

  --teal:         #1a7a8a;
  --teal-pale:    #e3f4f7;

  --bg:           #f3f6f2;
  --surface:      #ffffff;
  --surface2:     #f8faf8;
  --border:       #d5e1d8;
  --border-strong:#b8ccbc;

  --text:         #1a2e1e;
  --text-mid:     #3d5940;
  --text-muted:   #6b8a70;
  --text-dim:     #9ab09e;

  --radius:       12px;
  --radius-sm:    8px;
  --shadow-sm:    0 1px 4px rgba(30,86,49,0.08);
  --shadow-md:    0 4px 20px rgba(30,86,49,0.10);
  --shadow-lg:    0 8px 40px rgba(30,86,49,0.13);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* --- HEADER --- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 14px;
}
.logo-wrap {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none;
}
.logo-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--green-deep), var(--green-mid));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
  box-shadow: 0 3px 12px rgba(30,86,49,0.3);
  flex-shrink: 0;
}
.logo-title {
  display: block;
  font-size: 1.25rem; font-weight: 700;
  color: var(--green-deep);
  letter-spacing: 0.02em;
}
.logo-sub {
  display: block;
  font-size: 0.65rem; color: var(--text-muted);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.header-stats {
  display: flex; gap: 10px; flex-wrap: wrap;
}
.stat-pill {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 5px 18px;
  text-align: center;
  min-width: 110px;
  box-shadow: var(--shadow-sm);
}
.stat-pill.stat-ria  { border-color: #b8d8be; background: var(--green-ultra); }
.stat-pill.stat-ctri { border-color: #b8d8e8; background: var(--teal-pale); }
.stat-num {
  display: block;
  font-size: 1.05rem; font-weight: 700;
  color: var(--green-deep);
  font-variant-numeric: tabular-nums;
}
.stat-pill.stat-ctri .stat-num { color: var(--teal); }
.stat-lbl {
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
}

/* --- HERO --- */
.hero {
  position: relative;
  padding: 64px 28px 52px;
  overflow: hidden;
  text-align: center;
  background: linear-gradient(170deg, var(--green-ultra) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}
.hero-bg-pattern {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    radial-gradient(circle at 15% 30%, rgba(82,183,136,0.12) 0px, transparent 220px),
    radial-gradient(circle at 85% 70%, rgba(26,122,138,0.08) 0px, transparent 250px),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cpath d='M30 5 C38 15 38 25 30 30 C22 25 22 15 30 5z' fill='%232d7a4f' fill-opacity='0.04'/%3E%3C/g%3E%3C/svg%3E");
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 800px; margin: 0 auto;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--green-pale);
  border: 1px solid var(--green-light);
  color: var(--green-mid);
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase;
  padding: 4px 14px; border-radius: 50px;
  margin-bottom: 22px;
}
.hero-badge::before { content: '🌿'; font-size: 0.9rem; }
.hero-title {
  font-family: 'Crimson Pro', serif;
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  font-weight: 600;
  color: var(--green-deep);
  margin-bottom: 14px;
  line-height: 1.2;
}
.hero-title em {
  font-style: italic;
  color: var(--saffron);
}
.hero-subtitle {
  font-size: 1rem; color: var(--text-muted);
  max-width: 560px; margin: 0 auto 36px;
  line-height: 1.7;
}

/* --- SEARCH BOX --- */
.search-container { max-width: 740px; margin: 0 auto; }
.search-box {
  position: relative;
  display: flex; align-items: center;
  background: var(--surface);
  border: 2px solid var(--border-strong);
  border-radius: 50px;
  padding: 4px 6px 4px 22px;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-md);
}
.search-box:focus-within {
  border-color: var(--green-mid);
  box-shadow: 0 0 0 4px rgba(45,122,79,0.12), var(--shadow-md);
}
.search-icon {
  width: 20px; height: 20px;
  color: var(--text-dim); flex-shrink: 0;
  margin-right: 12px;
}
.search-input {
  flex: 1;
  background: none; border: none; outline: none;
  color: var(--text); font-family: 'Outfit', sans-serif;
  font-size: 1rem; padding: 12px 0;
}
.search-input::placeholder { color: var(--text-dim); }
.search-clear {
  background: var(--surface2); border: none; cursor: pointer;
  color: var(--text-muted);
  width: 36px; height: 36px; border-radius: 50%;
  font-size: 0.85rem;
  display: none; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s;
  flex-shrink: 0;
}
.search-clear:hover { background: var(--border); color: var(--text); }
.search-clear.visible { display: flex; }

.filters-row {
  display: flex; gap: 10px; justify-content: center;
  flex-wrap: wrap; margin-top: 14px;
}
.filter-select {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  padding: 7px 32px 7px 14px;
  border-radius: 50px;
  outline: none; cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%236b8a70' d='M4 6l4 4 4-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
  box-shadow: var(--shadow-sm);
}
.filter-select:focus, .filter-select:hover {
  border-color: var(--green-mid); color: var(--text);
}

/* --- RESULTS SECTION --- */
.results-section {
  max-width: 1000px; margin: 0 auto;
  padding: 28px 24px 60px;
}
.results-meta {
  font-size: 0.85rem; color: var(--text-muted);
  margin-bottom: 16px; min-height: 22px;
}
.results-meta strong { color: var(--green-mid); }

/* --- RESULT CARD --- */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  box-shadow: var(--shadow-sm);
}
.result-card:hover {
  border-color: var(--green-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.result-card.expanded {
  border-color: var(--green-mid);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex; align-items: flex-start;
  gap: 14px; padding: 16px 20px;
  cursor: pointer; user-select: none;
}
.source-badge {
  flex-shrink: 0;
  font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.07em;
  padding: 3px 9px;
  border-radius: 50px;
  margin-top: 3px;
  text-transform: uppercase;
}
.badge-ria  { background: var(--green-pale); color: var(--green-deep); border: 1px solid var(--green-light); }
.badge-ctri { background: var(--teal-pale);  color: var(--teal);       border: 1px solid #90c8d4; }

.card-title-text {
  flex: 1;
  font-family: 'Crimson Pro', serif;
  font-size: 1.08rem; line-height: 1.5;
  color: var(--text);
  transition: color 0.2s;
}
.result-card:hover .card-title-text,
.result-card.expanded .card-title-text { color: var(--green-deep); }

.card-meta-line {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  margin-top: 7px;
}
.meta-chip {
  font-size: 0.71rem; color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 2px 10px;
}
.card-toggle {
  flex-shrink: 0;
  color: var(--text-dim); font-size: 1rem;
  transition: transform 0.25s, color 0.2s;
  margin-top: 4px;
}
.result-card.expanded .card-toggle {
  transform: rotate(180deg); color: var(--green-mid);
}

/* Expandable details */
.card-details {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
  border-top: 0px solid var(--border);
}
.result-card.expanded .card-details {
  max-height: 600px;
  border-top-width: 1px;
}
.details-inner {
  padding: 18px 20px;
  background: var(--green-ultra);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}
.detail-label {
  font-size: 0.62rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--text-dim); margin-bottom: 3px;
}
.detail-value {
  font-size: 0.9rem; color: var(--text-mid); line-height: 1.4;
}
.detail-value.highlight { color: var(--green-deep); font-weight: 600; }

.status-pill {
  display: inline-block;
  font-size: 0.7rem; font-weight: 600;
  padding: 2px 10px; border-radius: 50px;
}
.status-recruiting { background: #d8f3dc; color: var(--green-deep); }
.status-completed  { background: var(--saffron-pale); color: var(--saffron); }
.status-other      { background: var(--surface2); color: var(--text-muted); }

/* --- NO RESULTS / LOADING --- */
.no-results {
  text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.no-results .nr-icon { font-size: 3rem; margin-bottom: 16px; }
.no-results h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--text); }

.loading-wrap { text-align: center; padding: 40px; }
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--green-mid);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- PAGINATION --- */
.pagination {
  display: flex; justify-content: center; gap: 8px;
  flex-wrap: wrap; margin-top: 30px;
}
.page-btn {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
  font-size: 0.88rem;
  padding: 8px 14px; border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}
.page-btn:hover { border-color: var(--green-mid); color: var(--green-deep); }
.page-btn.active {
  background: var(--green-mid);
  border-color: var(--green-mid);
  color: #fff; font-weight: 700;
  box-shadow: 0 3px 12px rgba(45,122,79,0.3);
}
.page-btn:disabled { opacity: 0.35; cursor: default; }

/* --- FOOTER --- */
.site-footer {
  background: var(--green-deep);
  color: rgba(255,255,255,0.65);
  padding: 40px 28px;
  text-align: center;
  font-size: 0.82rem; line-height: 2;
}
.footer-logo {
  font-size: 1.2rem; font-weight: 700;
  color: #fff; margin-bottom: 6px;
  letter-spacing: 0.06em;
}
.footer-note { opacity: 0.5; font-size: 0.75rem; }

/* --- Responsive --- */
@media (max-width: 640px) {
  .header-stats { display: none; }
  .hero { padding: 44px 16px 32px; }
  .details-inner { grid-template-columns: 1fr 1fr; }
  .hero-badge { font-size: 0.65rem; }
}