/* ============================================================
   SEASTAR CMS V4 — Commercial Grade Stylesheet
   ============================================================ */
:root {
  --bg0: #0b1120;
  --bg1: #111827;
  --bg2: #1f2937;
  --bg3: #374151;
  --bg4: #4b5563;
  --border: #2d3748;
  --borderH: #4a5568;
  --cyan: #06b6d4;
  --cyanD: #0891b2;
  --cyanL: #22d3ee;
  --cyanBg: rgba(6,182,212,.08);
  --green: #10b981;
  --greenD: #059669;
  --greenBg: rgba(16,185,129,.08);
  --amber: #f59e0b;
  --amberD: #d97706;
  --amberBg: rgba(245,158,11,.08);
  --red: #ef4444;
  --redD: #dc2626;
  --redBg: rgba(239,68,68,.08);
  --purple: #8b5cf6;
  --t0: #ffffff;
  --t1: #e2e8f0;
  --t2: #94a3b8;
  --t3: #64748b;
  --t4: #475569;
  --shadow: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadowL: 0 4px 6px rgba(0,0,0,.3);
  --radius: 6px;
  --radiusL: 8px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; overflow:hidden; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg0);
  color: var(--t1);
  -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */
.app { display:flex; flex-direction:column; height:100vh; }

/* HEADER */
.hdr {
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 100;
}
.logo { display:flex; align-items:center; gap:10px; }
.logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--cyan), var(--cyanD));
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  box-shadow: 0 0 12px rgba(6,182,212,.3);
}
.logo h1 {
  font-size: 15px; font-weight: 800; letter-spacing: 2px; color: var(--t0);
}
.logo .ver {
  font-size: 10px; font-weight: 600; color: var(--cyan);
  background: var(--cyanBg);
  border: 1px solid rgba(6,182,212,.25);
  padding: 2px 8px; border-radius: 3px;
  letter-spacing: .5px;
}
.hdr-right { display:flex; align-items:center; gap:14px; }
.hdr-stat {
  display: flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 500; color: var(--t3);
}
.hdr-stat span { color: var(--t1); font-weight: 700; }
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.hdr-actions { display:flex; gap:5px; }

/* BODY */
.body-wrap { display:flex; flex:1; overflow:hidden; }

/* SIDEBAR */
.sidebar {
  width: 260px;
  background: var(--bg1);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden; flex-shrink: 0;
  transition: width .2s ease;
}
.sidebar.collapsed { width: 0; overflow: hidden; }
.sb-scroll { flex:1; overflow-y:auto; padding: 0; }
.sb-scroll::-webkit-scrollbar { width: 3px; }
.sb-scroll::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

.sb-sec { padding: 12px 14px; border-bottom: 1px solid var(--border); }
.sb-lbl {
  font-size: 10px; font-weight: 700; letter-spacing: 1px; color: var(--t3);
  margin-bottom: 8px; text-transform: uppercase;
}

/* Upload zones */
.upload-zone {
  border: 1px dashed var(--borderH);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-bottom: 5px;
  transition: all .2s;
  cursor: pointer;
}
.upload-zone:hover { border-color: var(--cyan); background: var(--cyanBg); }
.upload-zone.loaded { border-color: var(--green); border-style: solid; background: var(--greenBg); }
.upload-zone input { display:none; }
.upload-label { font-size: 9px; color: var(--t3); letter-spacing: .5px; font-weight: 600; }
.upload-name {
  font-size: 11px; color: var(--t2);
  display: flex; align-items: center; gap: 5px;
  cursor: pointer; margin-top: 3px;
}
.upload-name.loaded { color: var(--green); }

/* KPI cards */
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.kpi {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 8px;
  text-align: center;
}
.kpi-v { font-size: 20px; font-weight: 800; color: var(--cyan); line-height: 1; margin-bottom: 3px; }
.kpi-l { font-size: 9px; color: var(--t3); font-weight: 600; letter-spacing: .5px; }

/* Sidebar buttons */
.sb-btn {
  display: flex; align-items: center; gap: 6px;
  width: 100%; padding: 8px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--t2);
  font-size: 11px; font-weight: 500;
  font-family: inherit;
  cursor: pointer; margin-bottom: 4px;
  transition: all .15s;
  text-align: left;
}
.sb-btn:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyanBg); }
.sb-btn.g:hover { border-color: var(--green); color: var(--green); background: var(--greenBg); }
.sb-btn.a:hover { border-color: var(--amber); color: var(--amber); background: var(--amberBg); }
.sb-btn.r:hover { border-color: var(--red); color: var(--red); background: var(--redBg); }
.sb-btn.active { border-color: var(--cyan); color: var(--cyan); background: var(--cyanBg); }

/* MAIN AREA */
.main { flex:1; display:flex; flex-direction:column; overflow:hidden; min-width: 0; }

/* TABS */
.tab-bar {
  display: flex;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
}
.tab-bar::-webkit-scrollbar { height: 0; }
.tab-btn {
  padding: 0 16px; height: 38px;
  background: transparent; border: none;
  border-bottom: 2px solid transparent;
  color: var(--t3);
  font-family: inherit; font-size: 11px; font-weight: 600;
  letter-spacing: .5px;
  cursor: pointer; white-space: nowrap;
  transition: all .15s;
  display: flex; align-items: center; gap: 5px;
}
.tab-btn:hover { color: var(--t2); background: rgba(255,255,255,.02); }
.tab-btn.active { color: var(--cyan); border-bottom-color: var(--cyan); background: rgba(6,182,212,.04); }

/* PANELS */
.panels { flex:1; overflow:hidden; position:relative; }
.panel { display:none; height:100%; overflow:auto; padding:14px; flex-direction:column; gap:10px; }
.panel.active { display:flex; }
.panel::-webkit-scrollbar { width: 4px; }
.panel::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

/* CARD */
.card {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radiusL);
  overflow: hidden;
}
.card-hdr {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg2);
}
.card-title {
  font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--t1);
  display: flex; align-items: center; gap: 6px;
}
.card-body { padding: 12px 14px; }

/* FORMS */
.row { display:flex; gap:7px; align-items:center; flex-wrap:wrap; }
.fg { display:flex; flex-direction:column; gap:3px; flex:1; min-width:100px; }
.fl { font-size: 10px; color: var(--t3); font-weight: 600; letter-spacing:.5px; text-transform:uppercase; }
.fi {
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--t1);
  padding: 6px 10px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  width: 100%;
  transition: border-color .15s;
}
.fi:focus { outline:none; border-color: var(--cyan); box-shadow: 0 0 0 2px rgba(6,182,212,.12); }
.fi::placeholder { color: var(--t4); }
select.fi { cursor:pointer; }
select.fi option { background: var(--bg1); }

/* BUTTONS */
.btn {
  padding: 6px 14px;
  border: 1px solid;
  border-radius: var(--radius);
  font-size: 11px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 5px;
  transition: all .15s;
  white-space: nowrap;
}
.btn-c { background:transparent; border-color:var(--cyan); color:var(--cyan); }
.btn-c:hover { background:var(--cyan); color:var(--bg0); }
.btn-g { background:transparent; border-color:var(--green); color:var(--green); }
.btn-g:hover { background:var(--green); color:var(--bg0); }
.btn-a { background:transparent; border-color:var(--amber); color:var(--amber); }
.btn-a:hover { background:var(--amber); color:var(--bg0); }
.btn-r { background:transparent; border-color:var(--red); color:var(--red); }
.btn-r:hover { background:var(--red); color:#fff; }
.btn-gh { background:transparent; border-color:var(--border); color:var(--t2); }
.btn-gh:hover { border-color:var(--t2); color:var(--t1); background:rgba(255,255,255,.03); }
.btn-fill { background:linear-gradient(135deg,var(--cyan),var(--cyanD)); color:#fff; border:none; }
.btn-fill:hover { box-shadow:0 0 12px rgba(6,182,212,.4); transform:translateY(-1px); }
.btn:disabled { opacity:.4; cursor:not-allowed; }

/* BADGES */
.badge {
  display:inline-flex; align-items:center;
  padding: 2px 7px; border-radius: 3px;
  font-size: 10px; font-weight: 600; letter-spacing:.3px;
}
.bc { background:var(--cyanBg); color:var(--cyan); border:1px solid rgba(6,182,212,.2); }
.bg { background:var(--greenBg); color:var(--green); border:1px solid rgba(16,185,129,.2); }
.ba { background:var(--amberBg); color:var(--amber); border:1px solid rgba(245,158,11,.2); }
.br { background:var(--redBg); color:var(--red); border:1px solid rgba(239,68,68,.2); }

/* VIRTUAL SCROLL TABLE */
.vs-wrap { border:1px solid var(--border); border-radius:var(--radiusL); overflow:hidden; }
.vs-head {
  display: grid;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky; top:0; z-index:5;
}
.vs-hcell {
  padding: 8px 10px;
  font-size: 10px; font-weight: 700;
  letter-spacing: .8px; color: var(--t3);
  border-right: 1px solid var(--border);
  cursor: pointer; user-select: none;
  white-space: nowrap;
  display: flex; align-items: center; gap: 4px;
  transition: color .15s;
}
.vs-hcell:hover { color: var(--cyan); }
.vs-hcell:last-child { border-right:none; }
.vs-body { overflow-y:auto; position:relative; }
.vs-body::-webkit-scrollbar { width:4px; }
.vs-body::-webkit-scrollbar-thumb { background:var(--bg4); border-radius:2px; }
.vs-inner { position:relative; }
.vs-row {
  position:absolute; width:100%;
  display:grid;
  border-bottom:1px solid rgba(45,55,72,.5);
  cursor:pointer;
  transition: background .1s;
}
.vs-row:hover .vs-cell { background:rgba(6,182,212,.03); }
.vs-row.sel .vs-cell { background:rgba(6,182,212,.08)!important; }
.vs-cell {
  padding:0 10px; height:100%;
  display:flex; align-items:center;
  font-size:12px;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  border-right:1px solid rgba(45,55,72,.3);
}
.vs-cell:last-child { border-right:none; }
.vs-cell.data { color:var(--cyanL); font-family:'JetBrains Mono',monospace; font-size:11px; }
.vs-cell.edit:hover { background:rgba(6,182,212,.06)!important; cursor:text; }

/* Cell editing */
.cell-inp {
  background:var(--bg0); border:1px solid var(--cyan);
  color:var(--cyan); font-family:'JetBrains Mono',monospace;
  font-size:12px; padding:2px 6px; border-radius:3px;
  width:100%; box-shadow:0 0 8px rgba(6,182,212,.2);
}
.cell-inp:focus { outline:none; }

/* TOOLBAR */
.toolbar { display:flex; align-items:center; gap:6px; flex-wrap:wrap; }
.tsep { width:1px; height:18px; background:var(--border); margin:0 2px; }

/* DASHBOARD KPI */
.dash-kpi { display:grid; grid-template-columns:repeat(5,1fr); gap:8px; margin-bottom:10px; }
.dash-kpi-card {
  background: linear-gradient(135deg, var(--bg1), var(--bg2));
  border: 1px solid var(--border);
  border-radius: var(--radiusL);
  padding: 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dash-kpi-card::after {
  content:''; position:absolute; bottom:0; left:0; right:0; height:2px;
}
.dash-kpi-card.c::after { background:var(--cyan); }
.dash-kpi-card.g::after { background:var(--green); }
.dash-kpi-card.a::after { background:var(--amber); }
.dash-kpi-card.p::after { background:var(--purple); }
.dash-kpi-card.r::after { background:var(--red); }
.dkpi-v { font-size:28px; font-weight:800; line-height:1; margin-bottom:4px; }
.dkpi-l { font-size:10px; color:var(--t3); font-weight:600; letter-spacing:.5px; }

/* CHART GRID */
.chart-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.chart-box {
  background:var(--bg1); border:1px solid var(--border);
  border-radius:var(--radiusL); padding:14px;
}
.chart-box h3 { font-size:11px; font-weight:700; letter-spacing:1px; color:var(--t3); margin-bottom:10px; }

/* CAPACITY BARS */
.cap-row { display:flex; align-items:center; gap:8px; padding:5px 0; border-bottom:1px solid var(--border); font-size:12px; }
.cap-name { width:160px; color:var(--t2); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; flex-shrink:0; font-size:11px; }
.cap-bar { flex:1; background:var(--bg2); border-radius:3px; height:8px; overflow:hidden; }
.cap-fill { height:100%; border-radius:3px; transition:width .5s ease; }
.cap-ok { background:linear-gradient(90deg,var(--green),rgba(16,185,129,.5)); }
.cap-warn { background:linear-gradient(90deg,var(--amber),rgba(245,158,11,.5)); }
.cap-over { background:linear-gradient(90deg,var(--red),rgba(239,68,68,.5)); }
.cap-pct { width:48px; text-align:right; font-weight:700; font-size:11px; flex-shrink:0; font-family:'JetBrains Mono',monospace; }

/* PATH NODES */
.path-node {
  display:inline-flex; align-items:center;
  background:var(--bg3); border:1px solid var(--borderH);
  border-radius:4px; padding:3px 9px;
  font-size:11px; color:var(--cyan); margin:2px; font-weight:600;
}
.path-arrow { color:var(--t4); margin:0 2px; font-size:12px; }
.path-wrap {
  background:var(--bg2); border:1px solid var(--border);
  border-radius:var(--radius); padding:10px; line-height:2; min-height:48px;
}

/* ANALYSIS */
.analysis-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.stat-row { display:flex; justify-content:space-between; padding:6px 0; border-bottom:1px solid var(--border); font-size:12px; }
.stat-row .srl { color:var(--t2); }
.stat-row .srr { color:var(--cyanL); font-family:'JetBrains Mono',monospace; font-size:11px; font-weight:600; }

/* PROJECT */
.proj-meta { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-top:10px; }
.pm { display:flex; flex-direction:column; gap:3px; }
.pm-k { font-size:9px; color:var(--t3); font-weight:600; letter-spacing:1px; text-transform:uppercase; }
.pm-v { font-size:16px; font-weight:800; color:var(--cyan); }

/* FILTER BUILDER */
.fc {
  display:flex; align-items:center; gap:6px;
  background:var(--bg2); border:1px solid var(--border);
  border-radius:var(--radius); padding:7px; margin-bottom:5px;
}
.fc-logic { font-size:10px; font-weight:700; letter-spacing:1px; color:var(--amber); min-width:36px; text-align:center; }

/* STATUS BAR */
.status-bar {
  height: 24px;
  background: var(--bg1);
  border-top: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 14px; gap: 16px;
  font-size: 10px; color: var(--t3);
  flex-shrink: 0;
}
.si { display:flex; align-items:center; gap:4px; }
.si span { color:var(--t2); font-weight:600; }

/* NOTIFICATIONS */
.notif-stack {
  position:fixed; top:54px; right:14px; z-index:9000;
  display:flex; flex-direction:column; gap:5px; pointer-events:none;
}
.notif {
  padding:10px 16px; border-radius:var(--radius);
  font-size:12px; font-weight:500;
  display:flex; align-items:center; gap:10px;
  border-left:3px solid;
  backdrop-filter:blur(12px);
  pointer-events:auto;
  transform:translateX(120%);
  transition:transform .3s ease;
  max-width:360px; min-width:240px;
  box-shadow: var(--shadowL);
}
.notif.show { transform:translateX(0); }
.notif.info { background:rgba(11,17,32,.95); border-color:var(--cyan); }
.notif.success { background:rgba(11,17,32,.95); border-color:var(--green); }
.notif.warning { background:rgba(11,17,32,.95); border-color:var(--amber); }
.notif.error { background:rgba(11,17,32,.95); border-color:var(--red); }

/* LOADING */
.loader {
  position:fixed; inset:0;
  background:rgba(11,17,32,.92);
  display:none; flex-direction:column;
  align-items:center; justify-content:center;
  z-index:8000; backdrop-filter:blur(4px);
}
.loader.on { display:flex; }
.spin {
  width:40px; height:40px;
  border:2px solid var(--border);
  border-top-color:var(--cyan);
  border-radius:50%;
  animation:spin .7s linear infinite;
  margin-bottom:14px;
}
@keyframes spin { to{transform:rotate(360deg)} }
.load-txt { font-size:12px; font-weight:600; letter-spacing:1.5px; color:var(--cyan); }

/* MODAL - Fill Analysis */
.modal-overlay {
  display:none; position:fixed; inset:0;
  background:rgba(0,0,0,.6);
  z-index:7000;
  backdrop-filter:blur(4px);
}
.modal-overlay.show { display:block; }
.modal {
  display:none; position:fixed;
  top:50%; left:50%;
  transform:translate(-50%,-50%);
  width:90vw; max-width:1100px;
  max-height:85vh;
  background:var(--bg1);
  border:1px solid var(--border);
  border-radius:var(--radiusL);
  z-index:7001;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  overflow:hidden;
  flex-direction:column;
}
.modal.show { display:flex; }
.modal-header {
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 18px;
  border-bottom:1px solid var(--border);
  background:var(--bg2);
}
.modal-header h3 { font-size:13px; font-weight:700; letter-spacing:1px; color:var(--t1); }
.modal-close {
  background:none; border:none; color:var(--t3);
  font-size:18px; cursor:pointer;
  width:28px; height:28px;
  display:flex; align-items:center; justify-content:center;
  border-radius:4px;
  transition:all .15s;
}
.modal-close:hover { background:var(--redBg); color:var(--red); }
.modal-body { flex:1; overflow:auto; padding:16px; }

/* FILL ANALYSIS */
.fill-controls { display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:14px; }
.fill-control-group { display:flex; align-items:center; gap:6px; background:var(--bg2); border-radius:var(--radius); padding:6px 10px; }
.fill-control-group label { font-size:10px; font-weight:600; color:var(--t3); letter-spacing:.5px; }
.fill-control-group input[type="range"] { width:80px; accent-color:var(--cyan); }
.fill-control-group .val { font-size:11px; font-weight:700; color:var(--cyan); min-width:30px; text-align:center; }
.fill-tiers-btns { display:flex; gap:2px; }
.fill-tiers-btns button {
  padding:4px 10px; font-size:10px; font-weight:700;
  border:1px solid var(--border); background:var(--bg2);
  color:var(--t3); border-radius:3px; cursor:pointer;
  font-family:inherit; transition:all .15s;
}
.fill-tiers-btns button.active { border-color:var(--cyan); background:var(--cyanBg); color:var(--cyan); }
.fill-result-header {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:10px;
  padding:8px 12px;
  background:var(--bg2);
  border-radius:var(--radius);
}
.fill-result-header .fr-stat { font-size:12px; font-weight:600; color:var(--t2); }
.fill-result-header .fr-stat span { color:var(--cyan); font-weight:700; }
.fill-svg-container {
  background: var(--bg0);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  margin-bottom: 10px;
}
.fill-cable-list {
  display:flex; flex-wrap:wrap; gap:4px;
  max-height:120px; overflow-y:auto;
  padding:8px;
  background:var(--bg2);
  border-radius:var(--radius);
}
.fill-cable-chip {
  display:flex; align-items:center; gap:4px;
  padding:3px 8px; border-radius:4px;
  font-size:10px; border:1px solid var(--border);
}
.fill-cable-chip .chip-idx {
  width:18px; height:18px;
  background:var(--bg0); color:var(--t1);
  border-radius:3px; font-size:8px; font-weight:700;
  display:flex; align-items:center; justify-content:center;
}

/* Node Fill Button */
.node-fill-btn {
  display:inline-flex; align-items:center; gap:3px;
  padding:2px 6px; border-radius:3px;
  font-size:9px; font-weight:600;
  background:var(--cyanBg); color:var(--cyan);
  border:1px solid rgba(6,182,212,.2);
  cursor:pointer; transition:all .15s;
}
.node-fill-btn:hover { background:var(--cyan); color:var(--bg0); }

/* Scrollbar global */
::-webkit-scrollbar { width:4px; height:4px; }
::-webkit-scrollbar-track { background:var(--bg0); }
::-webkit-scrollbar-thumb { background:var(--bg4); border-radius:2px; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 220px; }
  .dash-kpi { grid-template-columns: repeat(3, 1fr); }
  .chart-grid { grid-template-columns: 1fr; }
  .analysis-grid { grid-template-columns: 1fr; }
  .proj-meta { grid-template-columns: repeat(2, 1fr); }
}