/* === BASE === */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#f8fafc;color:#1e293b;line-height:1.6}

/* === NAV === */
nav{background:#0f172a;padding:0 24px;display:flex;gap:0;align-items:center;height:52px;position:sticky;top:0;z-index:100}
nav a{color:#94a3b8;text-decoration:none;font-weight:500;font-size:.875em;padding:14px 14px;transition:color .15s}
nav a:hover{color:#fff}
.nav-brand{color:#fff !important;font-weight:700;font-size:1em;letter-spacing:-.02em;margin-right:12px;padding-left:0}
.nav-user{color:#64748b;margin-left:auto;font-size:.8em}

/* === SHARED COMPONENTS === */
.container{max-width:1600px;width:94%;margin:0 auto;padding:24px}
h1{margin-bottom:16px;color:#1e293b}
h2{margin:24px 0 12px;color:#334155}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06)}
th{background:#1e293b;color:#fff;padding:10px 12px;text-align:left;font-size:.8em;white-space:nowrap;font-weight:600;letter-spacing:.02em;text-transform:uppercase}
td{padding:8px 12px;border-bottom:1px solid #f1f5f9;font-size:.85em;color:#475569}
tr:hover{background:#f8fafc}
pre{background:#1e293b;color:#e2e8f0;padding:16px;border-radius:8px;overflow-x:auto;font-size:.85em}

/* Buttons & forms */
.filter-form{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.filter-form input,.filter-form select{padding:8px 12px;border:1px solid #e2e8f0;border-radius:6px;font-size:.875em;background:#fff}
.filter-form button,.btn-plot{padding:8px 20px;background:#3b82f6;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.875em;font-weight:500;transition:background .15s}
.filter-form button:hover,.btn-plot:hover{background:#2563eb}
.btn-clear{padding:8px 16px;color:#94a3b8;text-decoration:none;font-size:.875em}
.result-count{color:#94a3b8;margin:8px 0;font-size:.875em}
.table-wrap{overflow-x:auto}
.pagination{margin:20px 0;display:flex;align-items:center;gap:16px;justify-content:center}
.pagination a{padding:8px 16px;background:#3b82f6;color:#fff;text-decoration:none;border-radius:6px;font-size:.875em}
ul{margin-left:24px}
li{margin:6px 0}
.btn-edit{color:#3b82f6;text-decoration:none;font-size:.8em;font-weight:600}
.btn-edit:hover{text-decoration:underline}

/* Login */
.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:#0f172a}
.login-card{background:#fff;padding:48px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.2);width:380px}
.login-card h1{text-align:center;margin-bottom:8px}
.login-sub{text-align:center;color:#94a3b8;margin-bottom:24px}
.error-msg{background:#ef4444;color:#fff;padding:10px;border-radius:6px;margin-bottom:16px;text-align:center;font-size:.9em}
.success-msg{background:#10b981;color:#fff;padding:10px;border-radius:6px;margin-bottom:16px;text-align:center;font-size:.9em}
.btn-login{width:100%;padding:12px;background:#3b82f6;color:#fff;border:none;border-radius:6px;font-size:1em;cursor:pointer;margin-top:8px;font-weight:500}
.btn-login:hover{background:#2563eb}

/* Edit form */
.edit-form{background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.06);max-width:900px}
.form-row{display:flex;gap:16px;margin-bottom:12px}
.form-group{flex:1;display:flex;flex-direction:column;margin-bottom:8px}
.form-group label{font-size:.8em;font-weight:600;color:#475569;margin-bottom:4px;text-transform:uppercase;letter-spacing:.02em}
.form-group input,.form-group select,.form-group textarea{padding:8px 12px;border:1px solid #e2e8f0;border-radius:6px;font-size:.875em;background:#fff}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.1)}
.form-actions{display:flex;gap:12px;margin-top:16px}
.btn-save{padding:10px 24px;background:#10b981;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.95em;font-weight:500}
.btn-save:hover{background:#059669}
.btn-cancel{padding:10px 24px;color:#94a3b8;text-decoration:none;font-size:.95em}

/* Plot */
.plot-controls{background:#fff;padding:20px;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.06);margin-bottom:16px}
.chart-container{background:#fff;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.06);padding:20px;height:600px}
.chart-container-kde{background:#fff;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.06);padding:20px;height:650px;margin-top:12px}
.data-source-toggle{display:flex;gap:16px;margin-bottom:12px;align-items:center}
.data-source-toggle label{font-weight:500;cursor:pointer;font-size:.9em}
.multi-select{min-height:60px;max-height:120px;font-size:.85em}

/* References */
.ref-search{margin-bottom:20px}
.ref-search-input{width:100%;max-width:500px;padding:10px 16px;border:1px solid #e2e8f0;border-radius:8px;font-size:1em;background:#fff}
.ref-search-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.1)}
.ref-list{display:flex;flex-direction:column;gap:10px}
.ref-item{background:#fff;border-radius:8px;padding:16px 20px;box-shadow:0 1px 3px rgba(0,0,0,.04);border-left:3px solid #3b82f6}
.ref-header{display:flex;align-items:center;gap:12px;margin-bottom:6px;flex-wrap:wrap}
.ref-cite{font-weight:700;color:#1e293b;font-size:.95em}
.ref-count{background:#f1f5f9;color:#64748b;padding:2px 8px;border-radius:12px;font-size:.75em;font-weight:600}
.ref-browse-link{font-size:.8em;color:#3b82f6;text-decoration:none;margin-left:auto;font-weight:500}
.ref-browse-link:hover{text-decoration:underline}
.ref-full{color:#64748b;font-size:.875em;line-height:1.5}
.ref-missing{color:#cbd5e1;font-style:italic}
.ref-doi{margin-top:4px}
.ref-doi a{color:#3b82f6;font-size:.8em}
.ref-link{color:#3b82f6;text-decoration:none}
.ref-link:hover{text-decoration:underline}
.ref-edit-link{font-size:.8em;color:#f59e0b;text-decoration:none;font-weight:600}
.ref-edit-link:hover{text-decoration:underline}
.ref-sample-count{color:#94a3b8;margin:12px 0;font-size:.9em}
.delete-form{margin-top:16px}
.btn-delete{padding:10px 24px;background:#ef4444;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:.95em;font-weight:500}
.btn-delete:hover{background:#dc2626}
.ref-delete-btn{background:none;border:none;color:#ef4444;cursor:pointer;font-size:.8em;font-weight:600;padding:0}
.ref-delete-btn:hover{text-decoration:underline}

/* Toggle buttons */
.add-toggle{display:flex;gap:0;margin-bottom:20px}
.toggle-btn{padding:10px 24px;background:#f1f5f9;color:#475569;text-decoration:none;font-weight:500;font-size:.875em;border:1px solid #e2e8f0}
.toggle-btn:first-child{border-radius:6px 0 0 6px}
.toggle-btn:last-child{border-radius:0 6px 6px 0}
.toggle-btn.active{background:#3b82f6;color:#fff;border-color:#3b82f6}
.toggle-btn:hover:not(.active){background:#e2e8f0}

/* === HOMEPAGE === */
.hp-hero{background:linear-gradient(135deg,#0f172a 0%,#1e3a5f 50%,#164e63 100%);padding:64px 24px 56px;position:relative;overflow:hidden}
.hp-hero::before{content:'';position:absolute;top:0;right:0;width:600px;height:600px;background:radial-gradient(circle,rgba(59,130,246,.12) 0%,transparent 70%);pointer-events:none}
.hp-hero-inner{width:92%;margin:0 auto}
.hp-hero-text{position:relative;z-index:1}
.hp-title{font-size:2.4em;font-weight:800;color:#fff;line-height:1.15;letter-spacing:-.03em;margin-bottom:16px}
.hp-title-sub{font-size:.45em;font-weight:400;color:#94a3b8;letter-spacing:0}
.hp-desc{color:#94a3b8;font-size:1.05em;max-width:640px;margin-bottom:28px;line-height:1.7}
.hp-hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hp-btn{display:inline-block;padding:11px 24px;border-radius:8px;font-weight:600;font-size:.875em;text-decoration:none;transition:all .15s}
.hp-btn-primary{background:#3b82f6;color:#fff}
.hp-btn-primary:hover{background:#2563eb}
.hp-btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.3)}
.hp-btn-outline:hover{border-color:#fff;color:#fff}
.hp-btn-ghost{color:#94a3b8;background:transparent}
.hp-btn-ghost:hover{color:#fff}
.hp-btn-sm{padding:8px 18px;font-size:.8em}

.hp-container{width:94%;margin:0 auto;padding:0 24px 48px}

/* Metrics */
.hp-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:-40px 0 40px;position:relative;z-index:2}
.hp-metric{background:#fff;border-radius:10px;padding:24px 20px;text-align:center;box-shadow:0 4px 12px rgba(0,0,0,.06);transition:transform .15s}
.hp-metric:hover{transform:translateY(-2px)}
.hp-metric-val{font-size:2em;font-weight:800;color:#1e293b;letter-spacing:-.02em}
.hp-metric-label{font-size:.8em;color:#64748b;font-weight:500;margin-top:2px;text-transform:uppercase;letter-spacing:.04em}
.hp-metric-sub{margin-top:6px}
.hp-metric-sub a{color:#3b82f6;font-size:.8em;text-decoration:none;font-weight:600}
.hp-metric-sub a:hover{text-decoration:underline}

/* Dataset cards */
.hp-datasets{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
.hp-ds-card{background:#fff;border-radius:10px;padding:28px;box-shadow:0 1px 3px rgba(0,0,0,.06);position:relative;overflow:hidden}
.hp-ds-card h2{font-size:1.15em;font-weight:700;color:#1e293b;margin:8px 0 10px}
.hp-ds-card p{color:#64748b;font-size:.9em;line-height:1.6;margin-bottom:14px}
.hp-ds-badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.7em;font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.hp-ds-badge.arch{background:#dbeafe;color:#1d4ed8}
.hp-ds-badge.ore{background:#fef3c7;color:#92400e}
.hp-ds-stats{list-style:none;margin:0 0 16px;padding:0;font-size:.85em;color:#475569}
.hp-ds-stats li{padding:4px 0;border-bottom:1px solid #f8fafc}
.hp-ds-stats li strong{color:#1e293b}
.hp-ds-actions{display:flex;gap:8px}

/* Charts */
.hp-charts{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:40px}
.hp-chart-card{background:#fff;border-radius:10px;padding:24px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.hp-chart-card h3{font-size:.9em;font-weight:700;color:#475569;text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px}
.hp-chart-wrap{position:relative;height:240px}

/* Features */
.hp-section-title{font-size:1.3em;font-weight:700;color:#1e293b;text-align:center;margin-bottom:28px}
.hp-features{margin-bottom:48px}
.hp-feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.hp-feature{background:#fff;border-radius:10px;padding:24px;box-shadow:0 1px 3px rgba(0,0,0,.06);text-align:center}
.hp-feature-icon{width:48px;height:48px;background:#eff6ff;border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;color:#3b82f6}
.hp-feature h4{font-size:.9em;font-weight:700;color:#1e293b;margin-bottom:6px}
.hp-feature p{font-size:.8em;color:#64748b;line-height:1.5}

/* Citations */
.hp-cite{background:#fff;border-radius:10px;padding:28px;box-shadow:0 1px 3px rgba(0,0,0,.06);margin-bottom:40px}
.hp-cite h3{font-size:.9em;font-weight:700;color:#475569;text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px}
.hp-cite-item{font-size:.85em;color:#475569;line-height:1.6;padding:10px 0;border-bottom:1px solid #f1f5f9}
.hp-cite-item:last-child{border-bottom:none}
.hp-cite-item a{color:#3b82f6}
.hp-cite-tag{display:inline-block;background:#f1f5f9;color:#475569;padding:2px 8px;border-radius:4px;font-size:.75em;font-weight:700;text-transform:uppercase;margin-right:6px}

/* Footer */
.hp-footer{background:#0f172a;color:#475569;text-align:center;padding:20px;font-size:.8em}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hp-metrics{grid-template-columns:1fr}
  .hp-datasets{grid-template-columns:1fr}
  .hp-charts{grid-template-columns:1fr}
  .hp-feature-grid{grid-template-columns:repeat(2,1fr)}
  .hp-title{font-size:1.6em}
  .form-row{flex-direction:column}
}

/* Checkbox filter lists */
.cb-list{max-height:140px;overflow-y:auto;border:1px solid #e2e8f0;border-radius:6px;background:#fff;padding:4px 0}
.cb-item{display:flex;align-items:center;gap:6px;padding:3px 10px;cursor:pointer;font-size:.82em;color:#475569;transition:background .1s}
.cb-item:hover{background:#f1f5f9}
.cb-item input[type=checkbox]{accent-color:#3b82f6;width:14px;height:14px;flex-shrink:0}
.cb-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Nav login button */
.nav-login-btn{margin-left:auto;background:#3b82f6;color:#fff !important;padding:6px 16px;border-radius:6px;font-weight:600;font-size:.85em;transition:background .15s}
.nav-login-btn:hover{background:#2563eb}
/* Hero login button */
.hp-btn-login{background:rgba(255,255,255,.15);color:#fff;border:1.5px solid #3b82f6}
.hp-btn-login:hover{background:#3b82f6;color:#fff}

/* Filter search + uncheck all */
.cb-filter-bar{display:flex;gap:4px;margin-bottom:4px}
.cb-search{flex:1;padding:4px 8px;border:1px solid #e2e8f0;border-radius:4px;font-size:.8em;outline:none}
.cb-search:focus{border-color:#3b82f6}
.btn-uncheck{padding:3px 8px;font-size:.72em;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:4px;cursor:pointer;color:#64748b;white-space:nowrap}
.btn-uncheck:hover{background:#e2e8f0;color:#334155}

/* --- Homepage redesign 2026-04-24: 3 hero datasets + 3 mini metadata --- */
.hp-ds-count{font-size:2.4em;font-weight:800;color:#0f172a;letter-spacing:-.02em;margin:8px 0 4px;line-height:1}
.hp-ds-badge.te{background:#dcfce7;color:#166534}
.hp-ds-badge.arch{background:#dbeafe;color:#1d4ed8}
.hp-ds-badge.ore{background:#fef3c7;color:#92400e}

.hp-metrics-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:-12px 0 40px}
.hp-mini{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:14px 18px;display:flex;align-items:baseline;gap:12px;justify-content:space-between}
.hp-mini-val{font-size:1.4em;font-weight:700;color:#1e293b;flex-shrink:0}
.hp-mini-label{font-size:.78em;color:#64748b;font-weight:500;text-transform:uppercase;letter-spacing:.04em;flex:1}
.hp-mini-sub{font-size:.75em;flex-shrink:0}
.hp-mini-sub a{color:#3b82f6;text-decoration:none;font-weight:600}
.hp-mini-sub a:hover{text-decoration:underline}

@media (max-width:900px) {
  .hp-metrics-mini{grid-template-columns:1fr}
}

/* Homepage v3: 4-card hero grid + Sites&Refs combined card */
.hp-datasets{grid-template-columns:repeat(4,1fr)}
@media (max-width:1200px){.hp-datasets{grid-template-columns:repeat(2,1fr)}}
@media (max-width:650px){.hp-datasets{grid-template-columns:1fr}}
.hp-ds-badge.meta{background:#e2e8f0;color:#334155}
.hp-ds-dual{display:flex;align-items:flex-end;gap:14px;margin:8px 0 10px}
.hp-ds-dual-item{flex:1;min-width:0}
.hp-ds-dual-item .hp-ds-count{margin:0;font-size:2em}
.hp-ds-dual-sep{width:1px;background:#e2e8f0;align-self:stretch;margin:6px 0}
.hp-ds-dual-label{font-size:.72em;color:#64748b;text-transform:uppercase;letter-spacing:.05em;font-weight:600;margin-top:4px}