/* ─── BITDEPTH SHARED STYLES ─────────────────────────────────────── */
:root {
  --bg: #0a0a0a;
  --bg2: #111111;
  --bg3: #181818;
  --border: #222222;
  --orange: #f7931a;
  --orange-dim: #c97515;
  --orange-glow: rgba(247,147,26,0.15);
  --text: #e8e8e8;
  --muted: #666666;
  --green: #00d68f;
  --red: #ff4d4d;
  --mono: 'Space Mono', monospace;
  --display: 'Syne', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; max-width: 100%; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
  pointer-events: none;
  z-index: 1000;
}

/* ─── NAV ─── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}
.logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.logo span { color: var(--orange); }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--orange); }
.nav-links a.active { color: var(--orange); }
.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  color: var(--muted);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

/* ─── TICKER ─── */
.ticker-wrap {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  overflow: hidden;
  padding: 0.6rem 0;
}
.ticker {
  display: flex;
  gap: 3rem;
  animation: ticker 25s linear infinite;
  white-space: nowrap;
  width: max-content;
}
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-item {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.ticker-item .t-label { color: var(--muted); }
.ticker-item .t-val { color: var(--text); }
.ticker-item .t-up { color: var(--green); }
.ticker-item .t-down { color: var(--red); }

/* ─── SECTION / PAGE LAYOUT ─── */
section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.section-title {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.section-tag {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
}

/* ─── BUTTONS ─── */
.btn-primary {
  background: var(--orange);
  color: #000;
  border: none;
  padding: 0.75rem 1.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
  display: inline-block;
}
.btn-primary:hover { background: #ffad3b; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.75rem 1.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  display: inline-block;
}
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); }

/* ─── TOOL CARD ─── */
.tool-card {
  background: var(--bg);
  border: 1px solid var(--orange);
  padding: 2rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow: hidden;
  min-width: 0;
}
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(247,147,26,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.tool-badge {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
  font-family: var(--mono);
}
.tool-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}
.tool-desc {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.7;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.tool-body { flex: 1; }
.tool-label {
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}
.tool-section { margin-bottom: 1rem; }
.tool-note {
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 0.75rem;
  line-height: 1.6;
}
.tool-action-btn {
  width: 100%;
  background: var(--orange);
  color: #000;
  border: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.85rem;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.2s;
}
.tool-action-btn:hover { background: #ffad3b; }
.tool-action-btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* ─── SHARED INPUTS ─── */
.conv-input {
  width: 100%;
  box-sizing: border-box;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.75rem 0.75rem 0.75rem 2.5rem;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
  min-width: 0;
}
.conv-input::-webkit-outer-spin-button,
.conv-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.conv-input:focus { border-color: var(--orange); }
.conv-wrap { position: relative; margin-top: 0.4rem; }
.conv-prefix {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.85rem;
  pointer-events: none;
}

/* ─── STATS GRID ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 3rem;
}
.stat-box { background: var(--bg); padding: 1.5rem; }
.stat-box-label {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.stat-box-val {
  font-family: var(--display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}
.stat-box-sub { font-size: 0.68rem; color: var(--muted); margin-top: 0.2rem; }

/* ─── DATA TABLE ─── */
.data-table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.data-table th {
  text-align: left;
  padding: 0.6rem 1rem;
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.data-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); color: var(--text); }
.data-table tr:hover td { background: var(--bg2); }
.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid;
}
.tag-orange { border-color: var(--orange); color: var(--orange); }
.tag-green { border-color: var(--green); color: var(--green); }
.tag-muted { border-color: var(--border); color: var(--muted); }

/* ─── TERMINAL ─── */
.terminal {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 1.5rem;
  font-size: 0.75rem;
  line-height: 1.9;
  position: relative;
}
.terminal::before {
  content: '● ● ●';
  display: block;
  color: var(--muted);
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.t-cmd { color: var(--orange); }
.t-out { color: var(--muted); }
.t-val { color: var(--green); }
.t-comment { color: #444; }

/* ─── FEE BUTTONS ─── */
.fee-btn {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.6rem 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.4;
  text-align: center;
}
.fee-btn:hover { border-color: var(--orange); color: var(--text); }
.fee-btn.active { border-color: var(--orange); color: var(--orange); background: rgba(247,147,26,0.08); }
.fee-btn-sub { font-size: 0.62rem; color: var(--muted); }
.fee-btn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; margin-top: 0.5rem; }

/* ─── COMPARISON PANELS (used by inflation + regret tools) ─── */
.inf-compare, .regret-compare {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 1.25rem;
  margin: 1rem 0;
}
.inf-col, .regret-col { flex: 1; text-align: center; min-width: 0; }
.inf-col-label, .regret-col-label { font-size: 0.65rem; color: var(--muted); margin-bottom: 0.5rem; }
.inf-col-val, .regret-col-val {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.1;
  word-break: break-all;
}
.inf-col-sub, .regret-col-sub { font-size: 0.6rem; color: var(--muted); margin-top: 0.3rem; }
.inf-vs { font-size: 0.65rem; letter-spacing: 0.1em; color: var(--muted); flex-shrink: 0; }
.inf-summary {
  font-size: 0.75rem;
  color: var(--text);
  line-height: 1.7;
  padding: 0.75rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
  min-height: 2rem;
}

/* ─── HALVING CLOCK ─── */
.clock-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  width: 100%;
  min-width: 0;
}
.clock-unit {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 1rem 0.25rem;
  text-align: center;
  min-width: 0;
}
.clock-val {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
}
.clock-label { font-size: 0.55rem; letter-spacing: 0.15em; color: var(--muted); margin-top: 0.3rem; }
.halving-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 1rem; }
.halving-stat { background: var(--bg); border: 1px solid var(--border); padding: 0.75rem; }
.halving-stat-label { font-size: 0.6rem; color: var(--muted); margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.1em; }
.halving-stat-val { font-size: 0.72rem; color: var(--text); }

/* ─── SIGNAL / CHEAP TOOL ─── */
.signal-body { display: flex; flex-direction: column; align-items: center; text-align: center; }
.signal-ring {
  width: 150px; height: 150px;
  border-radius: 50%;
  border: 3px solid var(--border);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  margin: 1rem auto 1.5rem;
  flex-shrink: 0;
  transition: border-color 0.6s, box-shadow 0.6s;
}
.signal-ring-label { font-size: 0.55rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.25rem; }
.signal-ring-num { font-family: var(--display); font-size: 2.2rem; font-weight: 800; line-height: 1; transition: color 0.6s; }
.signal-ring-sub { font-size: 0.62rem; color: var(--muted); margin-top: 0.25rem; }
.signal-verdict { font-family: var(--display); font-size: 1.3rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 0.5rem; }
.signal-detail { font-size: 0.72rem; color: var(--muted); line-height: 1.7; max-width: 280px; margin-bottom: 1.25rem; }
.signal-legend { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; width: 100%; font-size: 0.55rem; text-align: center; }
.signal-legend-item { padding: 0.4rem 0.2rem; line-height: 1.4; }

/* ─── FEE ALARM ─── */
.alarm-input-row { display: flex; align-items: center; gap: 0.75rem; margin-top: 0.4rem; }
.alarm-unit { font-size: 0.75rem; color: var(--muted); white-space: nowrap; flex-shrink: 0; }
.alarm-current-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg2); border: 1px solid var(--border);
  padding: 0.75rem 1rem; font-size: 0.72rem; margin-top: 0.5rem;
}
.alarm-current-val { font-family: var(--mono); font-weight: 700; color: var(--orange); }
.alarm-status {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem; background: var(--bg2); border: 1px solid var(--border);
  margin-top: 0.75rem; font-size: 0.72rem; color: var(--muted);
}
.alarm-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); flex-shrink: 0; animation: pulse 1.5s infinite; }
.alarm-triggered {
  background: rgba(247,147,26,0.08); border: 2px solid var(--orange);
  padding: 1.5rem; text-align: center; margin-top: 0.75rem;
  animation: glow 1s ease-in-out infinite alternate;
}
.alarm-triggered-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.alarm-triggered-title { font-family: var(--display); font-size: 1.2rem; font-weight: 800; color: var(--orange); letter-spacing: 0.05em; }
.alarm-triggered-detail { font-size: 0.72rem; color: var(--muted); margin-top: 0.4rem; }

/* ─── SIGNAL DASHBOARD ─── */
.bsd-score-wrap { position: relative; width: 200px; margin: 0 auto 1.25rem; }
.bsd-arc-svg { width: 100%; display: block; }
.bsd-score-inner { position: absolute; bottom: 0; left: 0; right: 0; text-align: center; padding-bottom: 0.5rem; }
.bsd-score-num { font-family: var(--display); font-size: 2.8rem; font-weight: 800; line-height: 1; transition: color 0.8s; }
.bsd-score-label { font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-top: 0.2rem; transition: color 0.8s; }
.bsd-indicators { background: var(--bg2); border: 1px solid var(--border); margin-bottom: 1rem; }
.bsd-ind { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); gap: 0.5rem; }
.bsd-ind-left { display: flex; align-items: center; gap: 0.75rem; min-width: 0; }
.bsd-ind-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; background: var(--muted); transition: background 0.5s; }
.bsd-ind-name { font-size: 0.72rem; color: var(--text); }
.bsd-ind-val { font-size: 0.62rem; color: var(--muted); margin-top: 0.1rem; }
.bsd-ind-score { font-family: var(--mono); font-size: 0.8rem; font-weight: 700; flex-shrink: 0; }
.bsd-summary { font-size: 0.75rem; color: var(--text); line-height: 1.7; padding: 0.75rem 1rem; background: var(--bg2); border: 1px solid var(--border); margin-bottom: 1rem; }

/* ─── DCA / SAT STACK ─── */
.dca-result { background: var(--bg2); border: 1px solid var(--border); padding: 1rem; margin-top: 1rem; }
.dca-result-row { display: flex; justify-content: space-between; align-items: center; padding: 0.4rem 0; border-bottom: 1px solid var(--border); font-size: 0.75rem; gap: 0.5rem; }
.dca-result-row:last-child { border-bottom: none; }
.dca-result-label { color: var(--muted); white-space: nowrap; }
.dca-result-val { font-family: var(--mono); font-weight: 700; text-align: right; }

/* ─── ADDRESS CHECKER ─── */
.addr-input {
  width: 100%; box-sizing: border-box;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text); font-family: var(--mono); font-size: 0.72rem;
  padding: 0.85rem 1rem; outline: none; transition: border-color 0.2s;
  margin-top: 0.4rem; word-break: break-all;
}
.addr-input:focus { border-color: var(--orange); }
.addr-result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-top: 1rem; }
.addr-stat { background: var(--bg2); border: 1px solid var(--border); padding: 0.75rem; }
.addr-stat-label { font-size: 0.55rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.3rem; }
.addr-stat-val { font-family: var(--mono); font-size: 0.85rem; font-weight: 700; word-break: break-all; }

/* ─── FEE RATE BOX ─── */
.fee-rate-box { background: var(--bg); border: 1px solid var(--border); padding: 1.25rem; margin-bottom: 1rem; }
.fee-rate-label { font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.4rem; }
.fee-rate-row { display: flex; align-items: baseline; gap: 0.5rem; }
.fee-rate-num { font-family: var(--display); font-size: 2.2rem; font-weight: 800; color: var(--orange); }
.fee-rate-unit { color: var(--muted); font-size: 0.75rem; }
.fee-cost-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
.fee-cost-box { background: var(--bg); border: 1px solid var(--border); padding: 0.75rem; text-align: center; }
.fee-cost-label { font-size: 0.6rem; color: var(--muted); margin-bottom: 0.25rem; }
.fee-cost-val { font-size: 0.72rem; color: var(--text); }

/* ─── CONVERTER ─── */
.conv-rates { background: var(--bg); border: 1px solid var(--border); padding: 1rem; width: 100%; min-width: 0; }
.conv-rate-row { display: flex; justify-content: space-between; font-size: 0.72rem; margin-bottom: 0.4rem; gap: 0.5rem; min-width: 0; }
.conv-rate-row:last-child { margin-bottom: 0; }
.conv-rate-label { color: var(--muted); }
.conv-rate-val { color: var(--text); }

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--muted);
  max-width: 1200px;
  margin: 0 auto;
}
footer a { color: var(--orange); text-decoration: none; }

/* ─── ANIMATIONS ─── */
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes glow { from { box-shadow: 0 0 10px rgba(247,147,26,0.2); } to { box-shadow: 0 0 25px rgba(247,147,26,0.5); } }
.fade-in { opacity: 0; animation: fadeUp 0.7s ease forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }

/* ─── TOOL PAGE SPECIFIC ─── */
.tool-page-wrap {
  max-width: 700px;
  margin: 0 auto;
  padding: 3rem 2rem;
}
.tool-page-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}
.tool-page-back:hover { color: var(--orange); }
.tool-page-card {
  background: var(--bg2);
  border: 1px solid var(--orange);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}
.tool-page-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(247,147,26,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.tool-page-title {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.tool-page-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 3rem 1.5rem; }
}
@media (max-width: 600px) {
  .nav-links { display: none; }
  nav { padding: 1rem 1.25rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-box { padding: 1rem; }
  .stat-box-val { font-size: 1.2rem; }
  section { padding: 2.5rem 1.25rem; }
  footer { flex-direction: column; gap: 0.75rem; text-align: center; padding: 1.5rem 1.25rem; }
  .tool-page-wrap { padding: 2rem 1.25rem; }
  .tool-page-card { padding: 1.5rem; }
  .tool-page-title { font-size: 1.5rem; }
  .clock-val { font-size: 1.3rem; }
  .fee-rate-num { font-size: 1.8rem; }
  .signal-ring { width: 130px; height: 130px; }
  .signal-ring-num { font-size: 1.8rem; }
  .data-table { font-size: 0.7rem; min-width: 480px; }
  .data-table th, .data-table td { padding: 0.6rem 0.75rem; }
  .inf-col-val, .regret-col-val { font-size: 1.2rem; }
}
@media (max-width: 380px) {
  .clock-val { font-size: 1.1rem; }
}

/* ─── HAMBURGER ─── */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  padding: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.2s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Drawer */
.nav-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 72vw;
  max-width: 280px;
  background: #0f0f0f;
  border-left: 1px solid var(--border);
  z-index: 10000;
  padding: 4rem 0 2rem;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  visibility: hidden;
  transform: translateX(105%);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1), visibility 0s linear 0.28s;
}
.nav-drawer.open {
  visibility: visible;
  transform: translateX(0);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1), visibility 0s;
}

/* Top-level nav links */
.nav-drawer-link {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s, background 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.nav-drawer-link:hover, .nav-drawer-link.active { color: var(--orange); }

/* Tools accordion header (button) */
.nav-drawer-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 1.5rem;
  cursor: pointer;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}
.nav-drawer-group:hover { color: var(--orange); }
.nav-drawer-group.open { color: var(--orange); border-bottom: 1px solid var(--border); }
.nav-drawer-arrow { font-size: 0.55rem; opacity: 0.6; }

/* Tools submenu */
.nav-drawer-sub {
  display: none;
  flex-direction: column;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
}
.nav-drawer-sub.open { display: flex; }
.nav-drawer-sub-link {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem 0.75rem 2.25rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: color 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.nav-drawer-sub-link:last-child { border-bottom: none; }
.nav-drawer-sub-link:hover, .nav-drawer-sub-link.active { color: var(--orange); }

/* Overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 9999;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.25s, visibility 0s linear 0.25s;
  -webkit-tap-highlight-color: transparent;
}
.nav-overlay.open {
  visibility: visible;
  opacity: 1;
  transition: opacity 0.25s, visibility 0s;
}

@media (max-width: 600px) {
  .nav-burger  { display: flex; }
  .nav-links   { display: none; }
  .nav-status  { display: none; }
  nav { padding: 1rem 1.25rem; }
}