/* ============================================================
   CLIMACTIX GLOBAL — Institutional Design System v2.0
   Bloomberg · BlackRock · Palantir Grade
   Matte Black · Carbon Grey · Amber · Institutional Green
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* ── Core Surfaces (Dark Theme Default) ── */
  --bg:          #000000;
  --bg-alt:      #0A0A0A;
  --surface:     #0F0F0F;
  --surface-2:   #1A1A1A;
  --surface-3:   #242424;
  --surface-4:   #2E2E2E;

  /* ── Borders ── */
  --border:         #2C2C2C;
  --border-strong:  #333333;
  --border-accent:  rgba(245,158,11,0.3);

  /* ── Brand Accents ── */
  --amber:       #0EA5E9;   /* Institutional Arctic Blue — primary CTA */
  --amber-dim:   #0284C7;
  --amber-glow:  rgba(14,165,233,0.10);
  --amber-fg:    #FFFFFF;   /* text ON blue buttons */

  --cyan:        #0099CC;   /* Professional Cyan — data/links */
  --cyan-dim:    #0891B2;
  --cyan-glow:   rgba(6,182,212,0.10);

  --green:       #00CC44;   /* Institutional Green — positive */
  --green-dim:   #009933;
  --green-glow:  rgba(16,185,129,0.10);

  --red:         #FF3333;   /* Risk Red — negative/critical */
  --red-dim:     #CC0000;
  --red-glow:    rgba(239,68,68,0.10);

  --blue:        #3399FF;   /* Deep Blue — secondary data */
  --blue-dim:    #2563EB;
  --blue-glow:   rgba(59,130,246,0.10);

  --gold:        #F5C518;   /* Rank 1 */
  --silver:      #888888;   /* Rank 2 */
  --bronze:      #B87333;   /* Rank 3 */

  /* ── Text Scale ── */
  --text:        #FFFFFF;   /* Primary */
  --text-2:      #888888;   /* Secondary */
  --text-muted:  #555555;   /* Muted */
  --text-faint:  #222222;   /* Faint */

  /* ── Typography ── */
  --font:  'Inter', 'IBM Plex Sans', -apple-system, 'Helvetica Neue', system-ui, sans-serif;
  --mono:  'IBM Plex Mono', 'JetBrains Mono', 'Courier New', monospace;

  /* ── Geometry ── */
  --rad-xs: 1px;
  --rad-sm: 2px;
  --rad:    3px;
  --rad-md: 4px;
  --rad-lg: 6px;
  --rad-xl: 8px;

  /* ── Motion ── */
  --t:     0.12s ease;
  --t-med: 0.20s ease;

  /* ── Nav ── */
  --nav-h:  44px;
  --rail-w: 220px;
}

/* ── Light Theme ── */
[data-theme="light"] {
  --bg:          #F8FAFC;
  --bg-alt:      #FFFFFF;
  --surface:     #FFFFFF;
  --surface-2:   #F8FAFC;
  --surface-3:   #EFF2F7;
  --surface-4:   #FFFFFF;

  --border:         #E0E0E0;
  --border-strong:  rgba(0,0,0,0.14);
  --border-accent:  rgba(245,158,11,0.35);

  --text:        #0F172A;
  --text-2:      #334155;
  --text-muted:  #64748B;
  --text-faint:  #888888;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 13px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
img { display: block; max-width: 100%; }

::-webkit-scrollbar       { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 2px; }

/* ════════════════════════════════════════════
   INSTITUTIONAL TOPBAR
════════════════════════════════════════════ */
.inst-topbar {
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 0;
  position: sticky;
  top: 0;
  z-index: 300;
  flex-shrink: 0;
}

.inst-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  padding-right: 16px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
}
.inst-brand-mark {
  width: 24px; height: 24px;
  background: var(--amber);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--rad-sm);
  flex-shrink: 0;
}
.inst-brand-mark svg { width: 14px; height: 14px; fill: #000000; }
.inst-brand-name {
  font-size: 12px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.inst-brand-tag {
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: block;
  line-height: 1;
}

.inst-nav-items {
  display: flex;
  align-items: stretch;
  height: 100%;
  padding: 0 8px;
  gap: 1px;
  flex: 1;
  overflow-x: auto;
}
.inst-nav-items::-webkit-scrollbar { display: none; }

.inst-nav-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  transition: color var(--t);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.inst-nav-item:hover { color: var(--text); }
.inst-nav-item.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
  font-weight: 600;
}

.inst-nav-sep {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 8px;
  flex-shrink: 0;
  align-self: center;
}

.inst-topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding-left: 12px;
  border-left: 1px solid var(--border);
  flex-shrink: 0;
}

/* Live indicator */
.inst-live {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.08em;
}
.inst-live-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--green);
  animation: inst-pulse 2s ease infinite;
}
@keyframes inst-pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }

/* Clock */
.inst-clock {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* Theme toggle */
.inst-theme-btn {
  width: 28px; height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--rad-sm);
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
  transition: border-color var(--t), color var(--t);
}
.inst-theme-btn:hover { border-color: var(--border-strong); color: var(--text); }

/* User button */
.inst-user-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px 4px 4px;
  border: 1px solid var(--border);
  border-radius: var(--rad-md);
  background: none;
  cursor: pointer;
  transition: border-color var(--t);
}
.inst-user-btn:hover { border-color: var(--border-strong); }
.inst-avatar {
  width: 26px; height: 26px;
  border-radius: var(--rad-sm);
  background: var(--surface-3);
  overflow: hidden;
  flex-shrink: 0;
}
.inst-user-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}

/* ════════════════════════════════════════════
   TICKER BAR
════════════════════════════════════════════ */
.inst-ticker {
  height: 26px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  overflow: hidden;
  flex-shrink: 0;
}
.inst-ticker-label {
  flex-shrink: 0;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--amber);
  color: var(--amber-fg);
  white-space: nowrap;
}
.inst-ticker-scroll { flex: 1; overflow: hidden; }
.inst-ticker-inner {
  display: flex;
  gap: 0;
  animation: ticker-run 60s linear infinite;
  width: max-content;
}
@keyframes ticker-run { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }
.inst-tick-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 20px;
  border-right: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 10px;
  white-space: nowrap;
}
.inst-tick-label { color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; font-size: 9px; }
.inst-tick-value { color: var(--text); font-weight: 500; }
.inst-tick-up    { color: var(--green); }
.inst-tick-dn    { color: var(--red); }
.inst-tick-neutral { color: var(--amber); }

/* ════════════════════════════════════════════
   PANELS & CARDS
════════════════════════════════════════════ */
.inst-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  overflow: hidden;
}

.inst-panel-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  min-height: 34px;
}

.inst-panel-title {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.inst-panel-action {
  font-size: 9.5px;
  font-weight: 600;
  color: var(--cyan);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 0.04em;
  padding: 0;
  transition: color var(--t);
}
.inst-panel-action:hover { color: var(--text); }

.inst-panel-body { padding: 12px 14px; }
.inst-panel-body.np { padding: 0; }

/* KPI Card */
.inst-kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 12px 14px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t);
}
.inst-kpi:hover { border-color: var(--border-strong); }
.inst-kpi::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.inst-kpi.amber::before  { background: var(--amber); }
.inst-kpi.green::before  { background: var(--green); }
.inst-kpi.red::before    { background: var(--red); }
.inst-kpi.cyan::before   { background: var(--cyan); }
.inst-kpi.blue::before   { background: var(--blue); }

.inst-kpi-label {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.inst-kpi-value {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.inst-kpi.amber .inst-kpi-value { color: var(--amber); }
.inst-kpi.green .inst-kpi-value { color: var(--green); }
.inst-kpi.red   .inst-kpi-value { color: var(--red); }
.inst-kpi.cyan  .inst-kpi-value { color: var(--cyan); }
.inst-kpi.blue  .inst-kpi-value { color: var(--blue); }

.inst-kpi-sub   { font-size: 10px; color: var(--text-muted); margin-bottom: 6px; }
.inst-kpi-trend {
  display: flex;
  align-items: center;
  gap: 3px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
}
.inst-kpi-trend.pos { color: var(--green); }
.inst-kpi-trend.neg { color: var(--red); }
.inst-kpi-unit { font-size: 12px; color: var(--text-muted); font-weight: 400; margin-left: 2px; }

/* ════════════════════════════════════════════
   STATUS BADGES
════════════════════════════════════════════ */
.inst-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: var(--rad-sm);
}
.inst-badge.green  { background: var(--green-glow);  color: var(--green);  border: 1px solid rgba(16,185,129,0.25); }
.inst-badge.red    { background: var(--red-glow);    color: var(--red);    border: 1px solid rgba(239,68,68,0.25); }
.inst-badge.amber  { background: var(--amber-glow);  color: var(--amber);  border: 1px solid rgba(245,158,11,0.25); }
.inst-badge.cyan   { background: var(--cyan-glow);   color: var(--cyan);   border: 1px solid rgba(6,182,212,0.25); }
.inst-badge.blue   { background: var(--blue-glow);   color: var(--blue);   border: 1px solid rgba(59,130,246,0.25); }
.inst-badge.muted  { background: rgba(255,255,255,0.04); color: var(--text-muted); border: 1px solid var(--border); }

/* ════════════════════════════════════════════
   BUTTONS
════════════════════════════════════════════ */
.inst-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-size: 11.5px;
  font-weight: 600;
  border-radius: var(--rad-md);
  cursor: pointer;
  transition: all var(--t);
  border: 1px solid transparent;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;
}
.inst-btn.primary {
  background: var(--amber);
  color: var(--amber-fg);
  border-color: var(--amber);
}
.inst-btn.primary:hover { background: var(--amber-dim); }

.inst-btn.secondary {
  background: var(--surface-2);
  color: var(--text-2);
  border-color: var(--border);
}
.inst-btn.secondary:hover { border-color: var(--border-strong); color: var(--text); }

.inst-btn.ghost {
  background: none;
  color: var(--text-muted);
  border-color: var(--border);
}
.inst-btn.ghost:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }

.inst-btn.danger {
  background: var(--red-glow);
  color: var(--red);
  border-color: rgba(239,68,68,0.3);
}
.inst-btn.danger:hover { background: var(--red); color: #fff; }

.inst-btn.sm { padding: 4px 10px; font-size: 10.5px; }
.inst-btn.lg { padding: 10px 24px; font-size: 13px; }

/* ════════════════════════════════════════════
   DATA TABLE
════════════════════════════════════════════ */
.inst-table { width: 100%; border-collapse: collapse; font-size: 11.5px; }
.inst-table thead tr {
  border-bottom: 1px solid var(--border-strong);
}
.inst-table th {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 6px 12px;
  text-align: left;
  white-space: nowrap;
}
.inst-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
  vertical-align: middle;
}
.inst-table tbody tr:hover td { background: var(--surface-2); }
.inst-table tbody tr:last-child td { border-bottom: none; }
.inst-table .mono { font-family: var(--mono); }
.inst-table .num  { text-align: right; font-family: var(--mono); }

/* ════════════════════════════════════════════
   TABS
════════════════════════════════════════════ */
.inst-tabs {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  gap: 0;
  background: var(--surface);
  flex-shrink: 0;
}
.inst-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  height: 36px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--t), border-color var(--t);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.inst-tab:hover { color: var(--text); }
.inst-tab.active { color: var(--amber); border-bottom-color: var(--amber); }
.inst-tab-count {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--rad-sm);
  background: var(--surface-2);
  color: var(--text-muted);
}
.inst-tab.active .inst-tab-count { background: var(--amber-glow); color: var(--amber); }

/* ════════════════════════════════════════════
   PROGRESS / BARS
════════════════════════════════════════════ */
.inst-bar-track {
  height: 4px;
  background: var(--surface-3);
  border-radius: var(--rad-sm);
  overflow: hidden;
}
.inst-bar-fill {
  height: 100%;
  border-radius: var(--rad-sm);
  transition: width 0.8s ease;
}
.inst-bar-fill.amber { background: var(--amber); }
.inst-bar-fill.green { background: var(--green); }
.inst-bar-fill.red   { background: var(--red); }
.inst-bar-fill.cyan  { background: var(--cyan); }
.inst-bar-fill.blue  { background: var(--blue); }

/* Thin bar (3px) */
.inst-bar-track.thin { height: 3px; }

/* ════════════════════════════════════════════
   FORMS / INPUTS
════════════════════════════════════════════ */
.inst-input {
  width: 100%;
  height: 34px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--rad-md);
  padding: 0 10px;
  font-size: 12px;
  color: var(--text);
  outline: none;
  transition: border-color var(--t);
}
.inst-input:focus { border-color: var(--amber); }
.inst-input::placeholder { color: var(--text-muted); }

.inst-textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--rad-md);
  padding: 10px;
  font-size: 12px;
  color: var(--text);
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--t);
  line-height: 1.55;
}
.inst-textarea:focus { border-color: var(--amber); }

.inst-select {
  height: 34px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--rad-md);
  padding: 0 10px;
  font-size: 12px;
  color: var(--text);
  outline: none;
  cursor: pointer;
}
.inst-select:focus { border-color: var(--amber); }

.inst-label {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 5px;
}

/* ════════════════════════════════════════════
   RISK INDICATORS
════════════════════════════════════════════ */
.inst-risk-card {
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 10px 12px;
  border-left: 3px solid;
  background: var(--surface-2);
}
.inst-risk-card.high     { border-left-color: var(--red); }
.inst-risk-card.moderate { border-left-color: var(--amber); }
.inst-risk-card.low      { border-left-color: var(--green); }
.inst-risk-card.info     { border-left-color: var(--cyan); }

.inst-risk-label {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 5px;
}
.inst-risk-card.high     .inst-risk-label { color: var(--red); }
.inst-risk-card.moderate .inst-risk-label { color: var(--amber); }
.inst-risk-card.low      .inst-risk-label { color: var(--green); }
.inst-risk-card.info     .inst-risk-label { color: var(--cyan); }

.inst-risk-title { font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 4px; line-height: 1.35; }
.inst-risk-desc  { font-size: 11px; color: var(--text-2); line-height: 1.55; }

/* ════════════════════════════════════════════
   DIVIDERS & LAYOUT HELPERS
════════════════════════════════════════════ */
.inst-divider { height: 1px; background: var(--border); }
.inst-divider.vert { width: 1px; height: auto; align-self: stretch; }

.inst-row { display: flex; align-items: center; gap: 8px; }
.inst-col { display: flex; flex-direction: column; gap: 8px; }

.inst-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.inst-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.inst-grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
.inst-grid-5 { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; }

/* ════════════════════════════════════════════
   TYPOGRAPHY SCALE
════════════════════════════════════════════ */
.inst-display {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -1.2px;
  color: var(--text);
}
.inst-heading {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.4px;
  color: var(--text);
}
.inst-subheading {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.1px;
  color: var(--text);
}
.inst-body { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.inst-caption { font-size: 11px; color: var(--text-muted); }
.inst-mono-label {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ════════════════════════════════════════════
   WORKSPACE SHELL (3-PANEL LAYOUT)
════════════════════════════════════════════ */
.inst-shell {
  display: flex;
  height: calc(100vh - var(--nav-h));
  overflow: hidden;
}

.inst-rail {
  width: var(--rail-w);
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.inst-rail::-webkit-scrollbar { display: none; }

.inst-rail-section { padding: 10px 8px 4px; }
.inst-rail-section-label {
  font-family: var(--mono);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 0 8px;
  margin-bottom: 3px;
}

.inst-rail-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--rad-md);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--t), color var(--t);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.inst-rail-item:hover { background: var(--surface-2); color: var(--text); }
.inst-rail-item.active {
  background: var(--amber-glow);
  color: var(--amber);
  font-weight: 600;
}
.inst-rail-item .rail-icon { font-size: 14px; flex-shrink: 0; width: 16px; text-align: center; }
.inst-rail-item .rail-count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--text-faint);
}
.inst-rail-item.active .rail-count { color: var(--amber); }

.inst-main {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg);
}

.inst-sidebar {
  width: 280px;
  flex-shrink: 0;
  border-left: 1px solid var(--border);
  background: var(--surface);
  overflow-y: auto;
}
.inst-sidebar::-webkit-scrollbar { display: none; }

/* ════════════════════════════════════════════
   MODALS / OVERLAYS
════════════════════════════════════════════ */
.inst-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: none;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
}
.inst-modal {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--rad-xl);
  width: 480px;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  animation: modal-in 0.16s ease;
}
@keyframes modal-in {
  from { transform: translateY(12px) scale(0.97); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
.inst-modal-hd {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.inst-modal-title { font-size: 14px; font-weight: 700; letter-spacing: -0.2px; }
.inst-modal-close {
  width: 26px; height: 26px;
  border: 1px solid var(--border);
  border-radius: var(--rad-sm);
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--t);
}
.inst-modal-close:hover { border-color: var(--border-strong); color: var(--text); }
.inst-modal-body { padding: 16px 18px; overflow-y: auto; flex: 1; }
.inst-modal-foot {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

/* ════════════════════════════════════════════
   UTILITY — ANIMATIONS
════════════════════════════════════════════ */
@keyframes inst-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
.inst-fade-up { animation: inst-fade-up 0.3s ease both; }

/* ════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
════════════════════════════════════════════ */
@media (max-width: 1280px) {
  :root { --rail-w: 200px; }
  .inst-sidebar { width: 240px; }
}
@media (max-width: 1024px) {
  .inst-rail { display: none; }
  .inst-sidebar { display: none; }
}
@media (max-width: 768px) {
  .inst-topbar { padding: 0 12px; }
  .inst-nav-items { display: none; }
}

/* ════════════════════════════════════════════
   THEME TRANSITION
════════════════════════════════════════════ */
html.theme-transitioning * {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease !important;
}