/* ═══════════════════════════════════════════════════
   Warehouse Space Optimization Platform — Styles
   ═══════════════════════════════════════════════════ */

:root {
  --bg: #faf6f1;
  --bg2: #f3ede6;
  --panel: #ffffff;
  --card: rgba(255, 255, 255, 0.98);
  --text: #1b2a3d;
  --muted: #6b7280;
  --brand: #e85d04;
  --brand-light: #f47316;
  --brand-glow: rgba(232, 93, 4, 0.1);
  --green: #16a34a;
  --green-glow: rgba(22, 163, 74, 0.1);
  --orange: #e85d04;
  --orange-glow: rgba(232, 93, 4, 0.1);
  --purple: #7c3aed;
  --purple-glow: rgba(124, 58, 237, 0.1);
  --red: #dc2626;
  --nav-bg: #1b2a3d;
  --nav-text: #c8d6e5;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 2px 12px rgba(27,42,61,.06);
  --transition: .22s cubic-bezier(.4,0,.2,1);
  --nav-h: 56px;
  --ai-w: 380px;
}

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

html { font-size: 15px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,.15); border-radius: 3px; }

/* ── Top Navigation ── */
.topnav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px;
  background: var(--nav-bg);
  backdrop-filter: none;
  border-bottom: none;
}
.topnav-left, .topnav-right { display: flex; align-items: center; gap: 4px; }
.logo {
  font-size: 18px; font-weight: 900; letter-spacing: 1px;
  color: #ffffff; margin-right: 24px;
  display: flex; align-items: center; gap: 8px;
}
.logo i { font-size: 20px; color: var(--brand); }
.nav-link {
  padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 600;
  color: var(--nav-text); text-decoration: none; transition: var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.nav-link:hover { color: #ffffff; background: rgba(255,255,255,.08); }
.nav-link.active { color: #ffffff; background: rgba(232,93,4,.25); }

.btn-icon {
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06); color: var(--nav-text); cursor: pointer;
  display: flex; align-items: center; justify-content: center; position: relative;
  transition: var(--transition); font-size: 14px;
}
.btn-icon:hover { background: rgba(255,255,255,.12); color: #ffffff; }
.badge {
  position: absolute; top: -4px; right: -4px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--red); color: white; font-size: 9px;
  font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.avatar {
  width: 34px; height: 34px; border-radius: 8px; font-size: 11px; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), #f97316);
  color: #fff;
  display: flex; align-items: center; justify-content: center; margin-left: 8px; cursor: pointer;
}

/* ── App Shell ── */
.app-shell {
  display: flex;
  margin-top: var(--nav-h);
  min-height: calc(100vh - var(--nav-h));
}
.main-content {
  flex: 1;
  padding: 20px 24px 40px;
  max-width: 1400px;
  margin: 0 auto;
  transition: var(--transition);
}
body.ai-open .main-content { margin-right: var(--ai-w); }

/* ── Tab Pages ── */
.tab-page { display: none; }
.tab-page.active { display: block; }

/* ── Hero ── */
.hero {
  background: #ffffff;
  border: 1px solid rgba(27,42,61,.08);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; right: -80px; top: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,93,4,.06), transparent 65%);
  pointer-events: none;
}
.hero-text { margin-bottom: 20px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px; font-size: 11px;
  font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  background: var(--brand-glow); border: 1px solid rgba(232,93,4,.2);
  color: var(--brand); margin-bottom: 12px;
}
h1 { font-size: 38px; line-height: 1.08; letter-spacing: -1.2px; font-weight: 900; margin-bottom: 8px; max-width: 700px; }
h2 { font-size: 22px; letter-spacing: -.4px; font-weight: 800; }
h3 { font-size: 16px; font-weight: 700; }
p { color: var(--muted); margin-bottom: 8px; }

/* ── KPI Grid ── */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.kpi {
  display: flex; align-items: center; gap: 12px;
  padding: 16px; border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(27,42,61,.08);
  transition: var(--transition);
}
.kpi:hover { border-color: rgba(27,42,61,.16); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(27,42,61,.08); }
.kpi-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0;
}
.kpi-green .kpi-icon { background: var(--green-glow); color: var(--green); }
.kpi-blue .kpi-icon  { background: var(--brand-glow); color: var(--brand-light); }
.kpi-purple .kpi-icon { background: var(--purple-glow); color: var(--purple); }
.kpi-orange .kpi-icon { background: var(--orange-glow); color: var(--orange); }
.kpi .value { font-size: 26px; font-weight: 900; letter-spacing: -.8px; line-height: 1.1; }
.kpi .label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

/* ── Cards ── */
.card {
  background: #ffffff;
  border: 1px solid rgba(27,42,61,.08);
  border-radius: var(--radius);
  padding: 22px;
  margin-top: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: none;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 8px;
}
.card-subtitle { font-size: 12px; color: var(--muted); }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 999px; font-size: 11px;
  font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  background: rgba(232,93,4,.06); border: 1px solid rgba(232,93,4,.15); color: var(--brand);
}
.pill-ai { background: rgba(124,58,237,.08); border-color: rgba(124,58,237,.2); color: var(--purple); }

.btn-sm {
  padding: 6px 12px; border-radius: 8px; border: 1px solid rgba(27,42,61,.1);
  background: #ffffff; color: var(--muted); cursor: pointer;
  font-size: 12px; font-weight: 600; display: inline-flex; align-items: center; gap: 5px;
  transition: var(--transition);
}
.btn-sm:hover { background: var(--bg2); color: var(--text); }

/* ── Controls ── */
.controls { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.control {
  padding: 14px; border-radius: 12px;
  background: #ffffff;
  border: 1px solid rgba(27,42,61,.08);
}
label {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 800; color: #4b5563;
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px;
}
label i { font-size: 12px; color: var(--brand-light); }
input[type="text"], select {
  width: 100%; padding: 10px 12px; border-radius: var(--radius-sm);
  border: 1px solid rgba(27,42,61,.12);
  background: #ffffff; color: var(--text);
  font: inherit; font-size: 14px; transition: var(--transition);
}
input[type="text"]:focus, select:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-glow); }
select option { background: #ffffff; color: #1b2a3d; }
input[type="range"] {
  width: 100%; -webkit-appearance: none; appearance: none;
  height: 6px; border-radius: 3px; outline: none;
  background: linear-gradient(90deg, var(--brand) 0%, rgba(0,0,0,.08) 0%);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--brand-light); cursor: pointer; border: 3px solid #ffffff;
  box-shadow: 0 0 0 2px var(--brand);
}
.range-labels { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); margin-top: 4px; }
.range-current { font-weight: 800; color: var(--brand-light); font-size: 14px; }

/* ── Grids ── */
.twocol { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.metrics-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.metric-tile {
  padding: 16px; border-radius: 12px; text-align: center;
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
  transition: var(--transition);
}
.metric-tile:hover { border-color: rgba(27,42,61,.16); }
.metric-tile i { font-size: 20px; color: var(--brand-light); margin-bottom: 8px; display: block; }
.metric-val { font-size: 20px; font-weight: 900; letter-spacing: -.5px; }
.metric-label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-top: 4px; }

/* ── AI Insights ── */
.ai-insights-card { border-color: rgba(124,58,237,.15); }
.ai-insights { display: flex; flex-wrap: wrap; gap: 10px; }
.insight {
  flex: 1 1 280px; padding: 12px 16px; border-radius: 10px;
  background: rgba(124,58,237,.04); border: 1px solid rgba(124,58,237,.1);
  font-size: 13px; display: flex; align-items: flex-start; gap: 10px;
  color: #4b5563; line-height: 1.5;
}
.insight i { color: var(--purple); margin-top: 2px; flex-shrink: 0; }

/* ── Canvas Charts ── */
canvas {
  width: 100%; height: 320px;
  background: #ffffff;
  border: 1px solid rgba(27,42,61,.08);
  border-radius: 14px; padding: 6px;
}

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: 12px; border: 1px solid rgba(27,42,61,.08); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid rgba(27,42,61,.06); text-align: left; white-space: nowrap; }
th {
  font-size: 11px; color: #4b5563; text-transform: uppercase; letter-spacing: .06em;
  background: rgba(27,42,61,.03); position: sticky; top: 0; z-index: 1;
}
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--brand-light); }
th.sortable i { font-size: 10px; margin-left: 4px; opacity: .5; }
tr:hover td { background: rgba(232,93,4,.04); }
.table-footer { display: flex; justify-content: space-between; align-items: center; padding: 12px 4px; font-size: 12px; color: var(--muted); }
.pagination { display: flex; gap: 4px; }
.pagination button {
  width: 30px; height: 30px; border-radius: 6px; border: 1px solid rgba(27,42,61,.1);
  background: #ffffff; color: var(--muted); cursor: pointer; font-size: 12px; font-weight: 700;
}
.pagination button.active { background: var(--brand); color: white; border-color: var(--brand); }
.pagination button:hover:not(.active) { background: var(--bg2); }

.sku-toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.sku-toolbar .control.compact {
  flex: 1 1 160px; display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 10px;
}
.sku-toolbar .control.compact label { margin-bottom: 0; font-size: 14px; }
.sku-toolbar .control.compact input,
.sku-toolbar .control.compact select { flex: 1; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.sku-count-badge {
  padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 800;
  background: var(--brand-glow); color: var(--brand); border: 1px solid rgba(232,93,4,.2);
}

/* ── Zone Map ── */
.zone-map-wrap { display: grid; grid-template-columns: 1fr 260px; gap: 16px; min-height: 340px; }
.zone-map { display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, 1fr); gap: 8px; }
.zone-block {
  border-radius: 12px; padding: 16px; cursor: pointer;
  display: flex; flex-direction: column; justify-content: space-between;
  border: 2px solid transparent; transition: var(--transition);
  position: relative; overflow: hidden;
}
.zone-block:hover { transform: scale(1.02); border-color: rgba(0,0,0,.15); }
.zone-block .zb-name { font-size: 14px; font-weight: 800; }
.zone-block .zb-pct { font-size: 28px; font-weight: 900; letter-spacing: -1px; }
.zone-block .zb-bar { height: 5px; border-radius: 3px; background: rgba(0,0,0,.3); margin-top: 8px; }
.zone-block .zb-bar-fill { height: 100%; border-radius: 3px; transition: width .4s ease; }
.zone-detail {
  padding: 18px; border-radius: 12px;
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
}
.zone-detail h3 { margin-bottom: 12px; }
.zone-detail .zd-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid rgba(27,42,61,.06); font-size: 13px; }
.zone-detail .zd-label { color: var(--muted); }
.zone-detail .zd-val { font-weight: 700; }

/* ── Scenario Builder ── */
.scenario-builder { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.scenario-slot {
  padding: 18px; border-radius: 14px;
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
}
.scenario-slot h3 { font-size: 14px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.scenario-slot h3 i { color: var(--brand-light); }
.scenario-controls { margin-bottom: 14px; }
.scenario-controls label {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px; font-size: 12px; text-transform: none; letter-spacing: 0;
}
.scenario-controls input[type="range"] { flex: 1; }
.scenario-controls select { width: auto; flex: 1; padding: 6px 8px; font-size: 12px; }
.sc-vol-val { font-weight: 800; color: var(--brand-light); min-width: 36px; text-align: right; }
.scenario-results > div {
  display: flex; justify-content: space-between; padding: 6px 0;
  border-bottom: 1px solid rgba(27,42,61,.06); font-size: 13px;
}
.sr-label { color: var(--muted); }
.sr-val { font-weight: 800; }
.scenario-chart-wrap { margin-top: 18px; }

/* ── AI Panel ── */
.ai-panel {
  position: fixed; top: var(--nav-h); right: 0; bottom: 0;
  width: var(--ai-w);
  background: #ffffff;
  backdrop-filter: none;
  border-left: 1px solid rgba(27,42,61,.1);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  z-index: 90;
}
body.ai-open .ai-panel { transform: translateX(0); }
.ai-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; border-bottom: 1px solid rgba(27,42,61,.08);
}
.ai-panel-title { font-size: 14px; font-weight: 800; display: flex; align-items: center; gap: 8px; color: var(--purple); }
.ai-panel-title i { font-size: 16px; }

.ai-suggestions {
  padding: 12px 14px; border-bottom: 1px solid rgba(27,42,61,.08);
  display: flex; flex-wrap: wrap; gap: 6px;
}
.ai-suggestion-label { width: 100%; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 4px; }
.ai-chip {
  padding: 6px 11px; border-radius: 999px; border: 1px solid rgba(124,58,237,.2);
  background: rgba(124,58,237,.05); color: #5b21b6; font-size: 11px;
  cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 5px;
}
.ai-chip:hover { background: rgba(124,58,237,.1); border-color: rgba(124,58,237,.3); }

.ai-messages {
  flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 12px;
}
.ai-msg { display: flex; gap: 10px; }
.ai-msg-bot .ai-msg-avatar {
  width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--purple), var(--brand));
  display: flex; align-items: center; justify-content: center; font-size: 13px; color: #fff;
}
.ai-msg-user { flex-direction: row-reverse; }
.ai-msg-user .ai-msg-body { background: var(--brand-glow); border-color: rgba(234,88,12,.2); }
.ai-msg-body {
  padding: 10px 14px; border-radius: 12px; font-size: 13px; line-height: 1.55;
  background: var(--bg); border: 1px solid rgba(27,42,61,.08);
  max-width: 92%;
}
.ai-msg-body strong { color: var(--brand-light); }
.ai-typing { display: flex; gap: 4px; padding: 10px 14px; }
.ai-typing span {
  width: 7px; height: 7px; border-radius: 50%; background: var(--purple);
  animation: typingDot .9s infinite; opacity: .3;
}
.ai-typing span:nth-child(2) { animation-delay: .15s; }
.ai-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes typingDot { 0%,60%,100% { opacity: .3; } 30% { opacity: 1; } }

.ai-input-wrap {
  display: flex; padding: 12px; border-top: 1px solid rgba(27,42,61,.08); gap: 8px;
}
#ai-input {
  flex: 1; padding: 10px 14px; border-radius: 10px;
  border: 1px solid rgba(27,42,61,.12);
  background: #ffffff; color: var(--text); font: inherit; font-size: 13px;
}
#ai-input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-glow); }
#ai-send {
  width: 40px; height: 40px; border-radius: 10px; border: none;
  background: var(--brand);
  color: white; cursor: pointer; font-size: 14px;
  transition: var(--transition);
}
#ai-send:hover { transform: scale(1.05); box-shadow: 0 4px 16px rgba(232,93,4,.25); }

/* ── Notification Panel ── */
.notif-panel {
  position: fixed; top: var(--nav-h); right: 60px;
  width: 360px; background: #ffffff;
  backdrop-filter: none;
  border: 1px solid rgba(27,42,61,.1); border-radius: 14px;
  box-shadow: 0 16px 48px rgba(27,42,61,.12);
  z-index: 110; padding: 8px;
  display: none;
}
.notif-panel.open { display: block; }
.notif-header { padding: 10px 12px; font-size: 13px; font-weight: 800; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.notif-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 12px; border-radius: 10px; margin-top: 4px; font-size: 12px;
  transition: var(--transition);
}
.notif-item:hover { background: var(--bg2); }
.notif-item i { font-size: 16px; margin-top: 2px; flex-shrink: 0; }
.notif-warn i { color: var(--orange); }
.notif-info i { color: var(--brand-light); }
.notif-success i { color: var(--green); }
.notif-item strong { color: var(--text); }
.notif-time { font-size: 10px; color: var(--muted); white-space: nowrap; margin-left: auto; }

/* ═══ Bin Management ═══ */
.bin-grid-container { display: flex; flex-direction: column; gap: 20px; margin-bottom: 16px; }
.bin-3d-container { width: 100%; height: 600px; border-radius: var(--radius-sm); overflow: hidden; position: relative; background: #f3ede6; margin-bottom: 16px; }
.bin-3d-container canvas { display: block; }
.btn-3d-toggle { background: var(--brand); color: #fff; border: none; cursor: pointer; font-weight: 700; }
.btn-3d-toggle.active { background: var(--purple); }
.bin-3d-tooltip { position: absolute; pointer-events: none; background: rgba(255,255,255,.97); border: 1px solid var(--brand); border-radius: 8px; padding: 10px 14px; font-size: 12px; color: var(--text); z-index: 100; display: none; backdrop-filter: blur(8px); min-width: 180px; box-shadow: 0 8px 32px rgba(0,0,0,.12); }
.bin-3d-tooltip .tt-label { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .06em; }
.bin-3d-tooltip .tt-val { font-weight: 700; margin-bottom: 4px; }
.bin-zone-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; }
.bin-zone-title { font-size: 13px; font-weight: 800; color: var(--brand-light); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; }
.bin-zone-title i { margin-right: 6px; }
.bin-aisle-group { background: #ffffff; border-radius: var(--radius-sm); padding: 10px 14px; flex: 0 0 auto; }
.bin-aisle-label { font-size: 11px; font-weight: 700; color: var(--muted); margin-bottom: 6px; white-space: nowrap; }
.bin-rack-row { display: flex; gap: 3px; align-items: center; margin-bottom: 4px; }
.bin-cell {
  width: 36px; height: 30px; border-radius: 4px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; color: rgba(0,0,0,.6);
  transition: transform .15s, box-shadow .15s; position: relative;
}
.bin-cell:hover { transform: scale(1.6); z-index: 10; box-shadow: 0 0 12px rgba(0,0,0,.15); }
.bin-cell.status-ok { background: rgba(52,211,153,.35); border: 1px solid rgba(52,211,153,.5); }
.bin-cell.status-warning { background: rgba(251,146,60,.35); border: 1px solid rgba(251,146,60,.5); }
.bin-cell.status-critical { background: rgba(248,113,113,.45); border: 1px solid rgba(248,113,113,.6); }
.bin-cell.status-empty { background: rgba(0,0,0,.04); border: 1px solid rgba(0,0,0,.08); }
.bin-cell.replenish { box-shadow: 0 0 0 2px var(--purple), inset 0 0 6px rgba(167,139,250,.3); }
.bin-cell.highlight { box-shadow: 0 0 0 2px var(--brand-light); transform: scale(1.3); z-index: 5; }

.bin-legend { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; color: var(--muted); margin-left: 10px; }
.bin-legend-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.bin-detail-panel {
  margin-top: 12px; padding: 16px; border-radius: var(--radius-sm);
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
  min-height: 80px; transition: var(--transition);
}
.bin-detail-placeholder { text-align: center; color: var(--muted); font-size: 13px; padding: 12px; }
.bin-detail-placeholder p { margin-top: 6px; }
.bin-detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.bin-detail-item { display: flex; flex-direction: column; gap: 2px; }
.bin-detail-item .bd-label { font-size: 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.bin-detail-item .bd-val { font-size: 15px; font-weight: 700; color: var(--text); }

.bin-zone-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.bin-zone-card {
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
  border-radius: var(--radius-sm); padding: 14px; text-align: center;
}
.bin-zone-card h4 { font-size: 13px; color: var(--brand-light); margin-bottom: 8px; }
.bzc-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); padding: 3px 0; border-bottom: 1px solid rgba(0,0,0,.05); }
.bzc-row span:last-child { color: var(--text); font-weight: 600; }
.bzc-bar { height: 6px; border-radius: 3px; background: rgba(0,0,0,.08); margin-top: 8px; overflow: hidden; }
.bzc-bar-fill { height: 100%; border-radius: 3px; transition: width .3s; }

.replenish-action { background: var(--purple); color: #fff; border: none; padding: 4px 10px; border-radius: 6px; font-size: 11px; cursor: pointer; font-weight: 600; }
.replenish-action:hover { filter: brightness(1.15); }

/* ── Responsive ── */
@media (max-width: 1200px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .controls { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(3, 1fr); }
  .scenario-builder { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .twocol { grid-template-columns: 1fr; }
  .zone-map-wrap { grid-template-columns: 1fr; }
  h1 { font-size: 28px; }
  :root { --ai-w: 100vw; }
}
@media (max-width: 600px) {
  .kpi-grid, .controls, .metrics-grid { grid-template-columns: 1fr; }
  .main-content { padding: 12px; }
  h1 { font-size: 24px; }
}

/* ── Algorithm Tab ── */
.algo-results { min-height: 80px; }
.algo-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 32px; color: var(--muted); text-align: center;
}
.algo-placeholder p { font-size: 13px; margin: 0; }
.algo-matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 16px; }
.algo-matrix-cell {
  padding: 10px; border-radius: 10px; text-align: center; font-size: 12px; font-weight: 700;
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
}
.algo-matrix-cell.header { background: rgba(232,93,4,.06); color: var(--brand); font-weight: 800; }
.algo-matrix-cell.ax { background: rgba(52,211,153,.15); color: #34d399; }
.algo-matrix-cell.bx { background: rgba(96,165,250,.1); color: #60a5fa; }
.algo-matrix-cell.cx { background: rgba(251,146,60,.08); color: #fb923c; }
.algo-stat-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.algo-stat {
  flex: 1 1 120px; padding: 12px; border-radius: 10px; text-align: center;
  background: #ffffff; border: 1px solid rgba(27,42,61,.08);
}
.algo-stat .as-val { font-size: 22px; font-weight: 900; color: var(--brand-light); }
.algo-stat .as-label { font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-top: 2px; }
.algo-rec {
  padding: 12px 16px; border-radius: 10px; margin-bottom: 8px;
  display: flex; align-items: flex-start; gap: 12px; font-size: 13px;
  border: 1px solid rgba(27,42,61,.08);
}
.algo-rec.critical { background: rgba(248,113,113,.08); border-color: rgba(248,113,113,.15); }
.algo-rec.warning { background: rgba(251,146,60,.06); border-color: rgba(251,146,60,.12); }
.algo-rec.optimization { background: rgba(96,165,250,.06); border-color: rgba(96,165,250,.12); }
.algo-rec.insight { background: rgba(167,139,250,.06); border-color: rgba(167,139,250,.12); }
.algo-rec.financial { background: rgba(52,211,153,.06); border-color: rgba(52,211,153,.12); }
.algo-rec i { font-size: 18px; margin-top: 2px; flex-shrink: 0; }
.algo-rec .ar-title { font-weight: 700; }
.algo-rec .ar-detail { color: var(--muted); margin-top: 2px; }
.algo-rec .ar-action { margin-top: 6px; padding: 4px 10px; border-radius: 6px; background: rgba(0,0,0,.04); font-size: 11px; display: inline-block; }