/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #f5f7fa;
  color: #1a1a2e;
  line-height: 1.6;
}

a { color: #4a6fa5; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== NAVBAR ===== */
.navbar {
  background: #1a1a2e;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.navbar-brand {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.navbar-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.navbar-links a {
  color: #cdd6f4;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.navbar-links a:hover {
  color: #fff;
  text-decoration: none;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  color: #fff;
  padding: 5rem 2rem 4rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #a6b3d0;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.hero-badges {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #cdd6f4;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ===== STATS BAR ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 1.25rem 1rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  border: 1px solid #e8ecf3;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: #4a6fa5;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: #6b7a99;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== SEARCH & FILTERS ===== */
.search-filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  align-items: center;
}

.search-input {
  flex: 1;
  min-width: 220px;
  padding: 0.6rem 1rem;
  border: 1.5px solid #d0d9e8;
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus { border-color: #4a6fa5; }

.filter-select {
  padding: 0.6rem 1rem;
  border: 1.5px solid #d0d9e8;
  border-radius: 8px;
  font-size: 0.9rem;
  background: #fff;
  cursor: pointer;
  outline: none;
}

.filter-select:focus { border-color: #4a6fa5; }

.btn {
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.1s;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: #4a6fa5;
  color: #fff;
}

.btn-primary:hover { background: #3a5a8a; }

.btn-secondary {
  background: #e8ecf3;
  color: #4a6fa5;
}

.btn-secondary:hover { background: #d0d9e8; }

.btn-sm {
  padding: 0.35rem 0.8rem;
  font-size: 0.8rem;
}

/* ===== TABLE ===== */
.table-wrapper {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  border: 1px solid #e8ecf3;
  overflow: hidden;
  margin-bottom: 2rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th {
  background: #1a1a2e;
  color: #cdd6f4;
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.data-table th:hover { background: #252547; }

.data-table th .sort-icon {
  margin-left: 0.3rem;
  opacity: 0.5;
  font-size: 0.75rem;
}

.data-table th.sorted .sort-icon { opacity: 1; }

.data-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid #f0f3f8;
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tr:hover td { background: #f7f9fd; }

.data-table tr.expanded td { background: #f0f4fb; }

/* ===== BADGES / PILLS ===== */
.pill {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pill-blue { background: #dbeafe; color: #1e40af; }
.pill-green { background: #dcfce7; color: #166534; }
.pill-purple { background: #ede9fe; color: #5b21b6; }
.pill-orange { background: #ffedd5; color: #9a3412; }

/* ===== EXPAND ROW ===== */
.expand-btn {
  background: none;
  border: 1.5px solid #d0d9e8;
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font-size: 0.8rem;
  color: #4a6fa5;
  transition: background 0.2s;
}

.expand-btn:hover { background: #e8ecf3; }

.expanded-row td {
  background: #f0f4fb !important;
  padding: 1.25rem 1.5rem;
}

.expanded-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.expanded-field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.expanded-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #6b7a99;
  letter-spacing: 0.4px;
}

.expanded-value {
  font-size: 0.9rem;
  color: #1a1a2e;
  word-break: break-word;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.page-btn {
  padding: 0.4rem 0.85rem;
  border-radius: 7px;
  border: 1.5px solid #d0d9e8;
  background: #fff;
  cursor: pointer;
  font-size: 0.88rem;
  color: #4a6fa5;
  transition: all 0.15s;
}

.page-btn:hover { background: #e8ecf3; }
.page-btn.active { background: #4a6fa5; color: #fff; border-color: #4a6fa5; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.page-info {
  font-size: 0.85rem;
  color: #6b7a99;
  text-align: center;
  margin-bottom: 2rem;
}

/* ===== DOWNLOAD BAR ===== */
.download-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  align-items: center;
}

.download-bar span {
  font-size: 0.9rem;
  color: #6b7a99;
  font-weight: 600;
}

/* ===== CONTRIBUTE SECTION ===== */
.contribute-section {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  border: 1px solid #e8ecf3;
  padding: 2rem;
  margin-bottom: 2.5rem;
}

.contribute-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 0.5rem;
}

.contribute-section p {
  color: #6b7a99;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* ===== FORM ===== */
.form-section {
  border: 1.5px solid #e8ecf3;
  border-radius: 10px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.section-toggle {
  width: 100%;
  background: #f7f9fd;
  border: none;
  padding: 0.9rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  color: #1a1a2e;
  transition: background 0.2s;
}

.section-toggle:hover { background: #edf0f8; }
.section-toggle.active { background: #e8ecf3; }

.toggle-icon {
  font-size: 0.8rem;
  color: #4a6fa5;
}

.section-body {
  display: none;
  padding: 1.25rem;
  border-top: 1.5px solid #e8ecf3;
  background: #fff;
}

.section-body.open { display: block; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: #4a6fa5;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.55rem 0.85rem;
  border: 1.5px solid #d0d9e8;
  border-radius: 7px;
  font-size: 0.9rem;
  background: #fff;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: #4a6fa5;
}

.form-group textarea { resize: vertical; min-height: 80px; }

.form-hint {
  font-size: 0.78rem;
  color: #9aa3b8;
  margin-top: 0.1rem;
}

.input-with-btn {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.input-with-btn input { flex: 1; }

.orcid-result {
  font-size: 0.82rem;
  margin-top: 0.3rem;
  min-height: 1.2em;
}

.orcid-result.success { color: #166534; }
.orcid-result.error { color: #991b1b; }

.form-submit-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1.5px solid #e8ecf3;
}

.form-status {
  font-size: 0.9rem;
  min-height: 1.2em;
}

.form-status.success { color: #166534; font-weight: 600; }
.form-status.error { color: #991b1b; font-weight: 600; }

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open { display: flex; }

.modal {
  background: #fff;
  border-radius: 16px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  position: relative;
}

.modal h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 1rem;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: #6b7a99;
  line-height: 1;
}

.modal-close:hover { color: #1a1a2e; }

/* ===== TAGS INPUT ===== */
.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.4rem 0.6rem;
  border: 1.5px solid #d0d9e8;
  border-radius: 7px;
  background: #fff;
  cursor: text;
  min-height: 42px;
  align-items: center;
  transition: border-color 0.2s;
}

.tags-container:focus-within { border-color: #4a6fa5; }

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: #dbeafe;
  color: #1e40af;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.tag-chip button {
  background: none;
  border: none;
  color: #1e40af;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 0;
}

.tag-chip button:hover { color: #991b1b; }

.tags-input {
  border: none !important;
  outline: none !important;
  padding: 0.1rem 0.2rem !important;
  min-width: 100px;
  flex: 1;
  font-size: 0.9rem;
  background: transparent;
}

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: #1a1a2e;
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-size: 0.9rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  animation: slideIn 0.25s ease;
  max-width: 320px;
}

.toast.success { background: #166534; }
.toast.error { background: #991b1b; }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== FOOTER ===== */
.footer {
  background: #1a1a2e;
  color: #6b7a99;
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.85rem;
  margin-top: 2rem;
}

.footer a { color: #4a6fa5; }
.footer a:hover { color: #cdd6f4; }

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {
  .navbar { padding: 0 1rem; }
  .hero { padding: 3rem 1rem 2.5rem; }
  .data-table th, .data-table td { padding: 0.65rem 0.6rem; }
  .expanded-content { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .search-filter-bar { flex-direction: column; align-items: stretch; }
  .download-bar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .hero-badges { gap: 0.5rem; }
  .modal { padding: 1.5rem; }
}