/* KelvinCop — dark UI */
:root {
  --bg: #0b0e14;
  --bg-2: #11151f;
  --panel: #161b26;
  --panel-2: #1b2130;
  --border: #262d3d;
  --text: #e6e9f0;
  --muted: #8b93a7;
  --accent: #ffb020;
  --accent-2: #ff7a1a;
  --good: #35c96b;
  --fair: #f5c518;
  --low: #ff9f1c;
  --poor: #ff5d5d;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(0,0,0,.45);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1a2133 0%, var(--bg) 60%);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 2rem; margin: 0 0 .5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.15rem; margin: 0 0 1rem; letter-spacing: -0.01em; }
.h-icon { display: inline-flex; align-items: center; margin-right: .4rem; color: var(--accent); vertical-align: -2px; }
.h-icon svg { width: 1em; height: 1em; }
.brand-link { font-weight: 600; }
.muted { color: var(--muted); }
.container { width: min(1320px, 94vw); margin: 0 auto; }
.page { padding: 2rem 0 4rem; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(11,14,20,.7);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: .9rem 0; }
.brand { display: flex; align-items: center; gap: .5rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--accent); font-size: 1.3rem; }
.brand-name { font-weight: 700; letter-spacing: -0.02em; }
.main-nav { display: flex; gap: 1.25rem; }
.main-nav a { color: var(--muted); font-weight: 500; }
.main-nav a:hover, .main-nav a.active { color: var(--text); text-decoration: none; }
.nav-admin { border-left: 1px solid var(--border); padding-left: 1.25rem; }

/* Hero */
.hero { padding: 3rem 0 2.25rem; text-align: center; }
.hero h1 { font-size: 2.7rem; background: linear-gradient(90deg, #fff, #ffd9a0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { color: var(--muted); font-size: 1.1rem; margin: .9rem auto 1.75rem; max-width: 640px; }
.hero .search-form { max-width: 620px; margin: 0 auto; }

/* Search */
.search-form { display: flex; gap: .6rem; align-items: stretch; }
.search-form input[type=search] {
  flex: 1; min-width: 0; padding: .8rem 1rem; font-size: 1rem;
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); outline: none;
}
.search-form input[type=search]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,176,32,.12); }
.search-form-inline { margin: 1rem 0; flex-wrap: wrap; }
.search-form select {
  padding: .8rem .9rem; background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.search-form select:focus { border-color: var(--accent); }
.search-form .btn { display: inline-flex; align-items: center; gap: .45rem; padding: .8rem 1.3rem; }

/* Buttons */
.btn {
  display: inline-block; padding: .7rem 1.1rem; font-size: .95rem; font-weight: 600;
  border-radius: 10px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  cursor: pointer; transition: .15s;
}
.btn:hover { text-decoration: none; border-color: var(--muted); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #1a1205; border: none; box-shadow: 0 2px 10px rgba(255,122,26,.25); }
.btn-primary:hover { filter: brightness(1.08); box-shadow: 0 4px 16px rgba(255,122,26,.4); }
.btn-sm { padding: .4rem .7rem; font-size: .85rem; }
.btn-approve { background: rgba(53,201,107,.15); border-color: var(--good); color: var(--good); }
.btn-reject { background: rgba(255,93,93,.12); border-color: var(--poor); color: var(--poor); }
.btn-danger { background: rgba(255,93,93,.12); border-color: var(--poor); color: var(--poor); }
.btn-link { background: none; border: none; color: var(--accent); cursor: pointer; font-size: .9rem; padding: 0; }

/* Layout */
.grid-2 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.25rem; }
@media (max-width: 820px) { .grid-2 { grid-template-columns: 1fr; } }
.panel {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.35rem; box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.panel::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: .5;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.panel-cta { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
main > section.panel { margin-bottom: 1.25rem; }
main > section.panel:last-child { margin-bottom: 0; }

/* Chips / categories */
.chip { display: inline-block; padding: .15rem .55rem; font-size: .78rem; border-radius: 999px; background: var(--panel-2); color: var(--muted); border: 1px solid var(--border); }
.cat-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .35rem; }
.cat-list a { display: flex; justify-content: space-between; align-items: center; padding: .55rem .7rem; border-radius: 10px; color: var(--text); background: var(--panel-2); border: 1px solid transparent; transition: .15s; }
.cat-list a:hover { border-color: var(--accent); text-decoration: none; background: var(--panel); transform: translateX(3px); }
.cat-count { color: var(--muted); font-size: .85rem; }

/* Data table */
.data-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.data-table th { text-align: left; color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; padding: .6rem .7rem; border-bottom: 1px solid var(--border); }
.data-table td { padding: .65rem .7rem; border-bottom: 1px solid var(--border); }
.data-table tbody tr:hover { background: var(--panel-2); }

/* Score badges */
.score { display: inline-block; padding: .2rem .6rem; border-radius: 8px; font-weight: 700; font-variant-numeric: tabular-nums; }
.score-excellent { background: rgba(53,201,107,.15); color: var(--good); }
.score-good      { background: rgba(53,201,107,.10); color: var(--good); }
.score-fair      { background: rgba(245,197,24,.12); color: var(--fair); }
.score-low       { background: rgba(255,159,28,.12); color: var(--low); }
.score-poor      { background: rgba(255,93,93,.12); color: var(--poor); }
.score-none      { color: var(--muted); }

/* Page head */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.page-head h1 { margin: 0; }

/* Breadcrumb */
.breadcrumb { font-size: .9rem; color: var(--muted); margin-bottom: 1rem; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--text); }

/* Fixture head */
.fixture-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.fixture-head h1 { font-size: 1.9rem; }
.fixture-head .model { color: var(--accent); }
.fixture-meta { display: flex; gap: .9rem; align-items: center; flex-wrap: wrap; color: var(--muted); margin-top: .5rem; }
.overall-score { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 1.25rem 1.75rem; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--border); }
.overall-num { font-size: 2.6rem; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; }
.overall-label { font-size: .8rem; color: var(--muted); text-align: center; margin-top: .35rem; }

/* Stats row */
.stats-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
@media (max-width: 820px) { .stats-row { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; text-align: center; transition: .15s; }
.stat:hover { border-color: var(--accent); transform: translateY(-2px); }
.stat-num { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { font-size: .8rem; color: var(--muted); margin-top: .25rem; }
.stat-pending .stat-num { color: var(--fair); }

/* Pagination */
.pagination { display: flex; gap: .4rem; margin-top: 1.5rem; flex-wrap: wrap; }
.page-link { padding: .5rem .85rem; border-radius: 8px; background: var(--panel); border: 1px solid var(--border); color: var(--text); }
.page-link:hover { border-color: var(--accent); text-decoration: none; }
.page-link.active { background: var(--accent); color: #1a1205; border-color: var(--accent); }

/* Forms */
.upload-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.field-lg input, .field-lg .combobox input { font-size: 1.05rem; padding: .7rem .85rem; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field span { font-size: .85rem; color: var(--muted); font-weight: 600; }
.field em { color: var(--poor); font-style: normal; }
.field.grow { flex: 1; }
.field input, .field select {
  padding: .65rem .8rem; background: var(--bg-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; font-size: .95rem; outline: none;
}
.field input:focus, .field select:focus { border-color: var(--accent); }
.manual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
@media (max-width: 700px) { .manual-grid { grid-template-columns: repeat(2, 1fr); } }
.file-field input[type=file] { color: var(--muted); }
.file-field small { font-size: .8rem; }
.form-actions { display: flex; justify-content: flex-end; }
.upload-tabs { display: flex; gap: 1.5rem; border: none; padding: 0; margin: 0; }
.upload-tabs legend { font-size: .85rem; color: var(--muted); font-weight: 600; margin-bottom: .4rem; }
.tab { display: flex; align-items: center; gap: .45rem; color: var(--text); cursor: pointer; }
.existing-panel, .new-fixture-panel { margin: 1rem 0; }
.new-fixture-panel .manual-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 700px) { .new-fixture-panel .manual-grid { grid-template-columns: repeat(2, 1fr); } }

/* Alerts */
.alert { padding: .8rem 1rem; border-radius: 10px; margin-bottom: 1rem; }
.alert ul { margin: 0; padding-left: 1.1rem; }
.alert-error { background: rgba(255,93,93,.12); border: 1px solid var(--poor); color: var(--poor); }
.alert-success { background: rgba(53,201,107,.12); border: 1px solid var(--good); color: var(--good); }

/* Admin */
.login-panel { max-width: 380px; margin: 2rem auto; display: flex; flex-direction: column; gap: 1rem; }
.row-actions { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.inline-form { display: inline-flex; gap: .35rem; align-items: center; }
.note-input { padding: .4rem .6rem; background: var(--bg-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; font-size: .85rem; width: 110px; }
.status { display: inline-block; padding: .15rem .55rem; border-radius: 999px; font-size: .75rem; font-weight: 600; }
.status-approved { background: rgba(53,201,107,.15); color: var(--good); }
.status-pending  { background: rgba(245,197,24,.15); color: var(--fair); }
.status-rejected { background: rgba(255,93,93,.15); color: var(--poor); }
.logout-form { margin: 0; }

/* Admin nav */
.admin-nav { display: flex; gap: .5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.admin-nav a {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .55rem 1rem; border-radius: 10px; font-weight: 600;
  background: var(--panel); border: 1px solid var(--border); color: var(--muted);
}
.admin-nav a:hover { text-decoration: none; border-color: var(--accent); color: var(--text); }
.admin-nav a.active { background: var(--accent); color: #1a1205; border-color: var(--accent); }
.nav-badge { font-size: .72rem; font-weight: 700; padding: .05rem .45rem; border-radius: 999px; background: rgba(255,176,32,.2); color: inherit; }
.admin-nav a.active .nav-badge { background: rgba(0,0,0,.18); }
.admin-quick { display: flex; gap: .6rem; margin-bottom: 1.5rem; flex-wrap: wrap; }

/* Sub-headings inside panels */
.sub-head { font-size: .95rem; font-weight: 700; color: var(--text); margin: .25rem 0 .75rem; letter-spacing: -.01em; }

/* Combobox (live-search fixture picker) */
.combobox { position: relative; }
.combobox-list {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 20;
  margin: 0; padding: .3rem; list-style: none;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: var(--shadow); max-height: 280px; overflow-y: auto;
}
.combobox-item {
  display: flex; justify-content: space-between; align-items: center; gap: .5rem;
  padding: .55rem .7rem; border-radius: 8px; cursor: pointer; color: var(--text);
}
.combobox-item:hover { background: var(--panel-2); }
.combobox-create { color: var(--accent); }
.fx-tag { font-size: .72rem; color: var(--muted); }
.fx-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.edit-row td { background: var(--bg-2); border-left: 3px solid var(--accent); }
.edit-form { padding: .5rem 0; }
.edit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .9rem; margin-bottom: 1rem; }
@media (max-width: 820px) { .edit-grid { grid-template-columns: repeat(2, 1fr); } }
.edit-grid .field.grow { grid-column: span 2; }
.edit-grid .field.check { flex-direction: row; align-items: center; gap: .5rem; }
.edit-grid .field.check input { width: 1rem; height: 1rem; accent-color: var(--accent); }

/* CIE 1931 chromaticity diagram */
.cie-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 1.5rem; align-items: center; }
@media (max-width: 820px) { .cie-wrap { grid-template-columns: 1fr; } }
.cie-stage { position: relative; width: 100%; max-width: 560px; margin: 0 auto; aspect-ratio: 1 / 1; }
.cie-stage svg { width: 100%; height: 100%; display: block; }
.cie-spectrum { fill: none; stroke-width: 1.5; opacity: .9; }
.cie-locus { fill: none; stroke: var(--muted); stroke-width: 1; opacity: .5; }
.cie-grid line { stroke: var(--border); stroke-width: 1; opacity: .5; }
.cie-axis { fill: var(--muted); font-size: 13px; }
.cie-pt { cursor: default; }
.cie-pt circle { fill: var(--accent); stroke: #0b0e14; stroke-width: 1.5; transition: r .15s; }
.cie-pt:hover circle { fill: var(--accent-2); }
.cie-pt .halo { fill: var(--accent); opacity: .18; }
.cie-side { display: flex; flex-direction: column; gap: .7rem; }
.cie-legend { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .5rem; }
.cie-legend li { display: flex; align-items: center; gap: .6rem; padding: .55rem .7rem; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; }
.cie-swatch { width: 16px; height: 16px; border-radius: 50%; flex: 0 0 auto; border: 2px solid rgba(255,255,255,.15); }
.cie-legend .lbl { font-weight: 600; font-size: .9rem; }
.cie-legend .sub { color: var(--muted); font-size: .8rem; }
.cie-note { font-size: .82rem; color: var(--muted); line-height: 1.5; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 2rem; padding: 1.5rem 0; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; color: var(--muted); font-size: .9rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }