/* ── Reset & base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0a0e1a;
  --bg2:      #0d1117;
  --bg3:      #111827;
  --border:   #1e2a3a;
  --green:    #00ff88;
  --cyan:     #00d4ff;
  --amber:    #ffa500;
  --orange:   #ff6b35;
  --red:      #ff3855;
  --text:     #e2e8f0;
  --muted:    #94a3b8;
  --dim:      #64748b;
  --font:     'JetBrains Mono', 'Courier New', monospace;
  --radius:   6px;
  --trans:    0.15s ease;
}

html { font-size: 14px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  height: 100dvh;
  overflow: hidden;
  display: flex;
}

/* ── Layout ────────────────────────────────────────────────────────────────── */
#sidebar {
  width: 240px;
  min-width: 240px;
  background: linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 1rem 0.75rem;
  gap: 0.25rem;
}

#content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
  max-width: 1400px;
}

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
.logo {
  text-align: center;
  padding: 0.25rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}
.logo-icon { font-size: 2rem; }
.logo-title { color: var(--green); font-size: 0.95rem; font-weight: 700; letter-spacing: 0.1em; }
.logo-sub { color: var(--dim); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.12em; }

.nl-label { color: var(--dim); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.75rem; margin-bottom: 0.25rem; }
.nl-input {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  color: var(--cyan);
  font-family: var(--font);
  font-size: 0.75rem;
  padding: 0.4rem 0.6rem;
  outline: none;
  transition: box-shadow var(--trans);
}
.nl-input::placeholder { color: #2d4a5a; }
.nl-input:focus { box-shadow: 0 0 0 2px #00d4ff30; }

.nl-feedback { color: var(--green); font-size: 0.65rem; margin-top: 0.2rem; min-height: 0.9rem; }

.nav-section { color: var(--dim); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 1rem; margin-bottom: 0.3rem; }

.nav-btn {
  display: block;
  width: 100%;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.78rem;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  text-align: left;
  transition: all var(--trans);
}
.nav-btn:hover { border-color: var(--border); color: var(--text); background: var(--bg3); }
.nav-btn.active { border-color: var(--green); color: var(--green); background: #0f1f1a; }

.scenario-summary {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  color: var(--muted);
}
.scenario-summary strong { color: var(--green); }

/* ── Typography ─────────────────────────────────────────────────────────────── */
h1 { color: var(--green); font-size: 1.4rem; letter-spacing: 0.04em; margin-bottom: 0.25rem; }
h2 { color: var(--text); font-size: 1.1rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; margin: 1.25rem 0 0.75rem; }
h3 { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
p, caption { color: var(--muted); font-size: 0.78rem; line-height: 1.5; }

/* ── Cards / Containers ─────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }

/* ── Metrics ────────────────────────────────────────────────────────────────── */
.metric {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}
.metric-label { color: var(--dim); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; }
.metric-value { color: var(--green); font-size: 1.5rem; font-weight: 700; margin-top: 0.1rem; }
.metric-value.amber { color: var(--amber); }
.metric-value.red { color: var(--red); }

/* ── Risk badge ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.badge-low    { background: #00ff8818; color: var(--green); border: 1px solid var(--green); }
.badge-mod    { background: #ffa50018; color: var(--amber); border: 1px solid var(--amber); }
.badge-high   { background: #ff6b3518; color: var(--orange); border: 1px solid var(--orange); }
.badge-crit   { background: #ff385518; color: var(--red);   border: 1px solid var(--red);   }

/* ── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  background: linear-gradient(135deg, var(--green), var(--cyan));
  border: none;
  border-radius: var(--radius);
  color: var(--bg);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.5rem 1.25rem;
  text-transform: uppercase;
  transition: opacity var(--trans), transform var(--trans);
  width: 100%;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.7rem; width: auto; }

/* ── Form controls ──────────────────────────────────────────────────────────── */
label.field-label { color: var(--muted); font-size: 0.7rem; display: block; margin-bottom: 0.25rem; }
input[type=range] { width: 100%; accent-color: var(--green); cursor: pointer; }
.range-row { display: flex; align-items: center; gap: 0.5rem; }
.range-val { color: var(--green); font-size: 0.75rem; min-width: 2.5rem; text-align: right; }

input[type=checkbox] { accent-color: var(--green); cursor: pointer; }
.check-row { display: flex; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.8rem; margin: 0.3rem 0; cursor: pointer; }

select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.78rem;
  padding: 0.3rem 0.5rem;
  width: 100%;
}

/* ── Tables ─────────────────────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
th { color: var(--dim); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; border-bottom: 1px solid var(--border); padding: 0.4rem 0.5rem; text-align: left; }
td { color: var(--text); padding: 0.4rem 0.5rem; border-bottom: 1px solid #0d1117; }
tr:last-child td { border-bottom: none; }

/* ── Scenario cards ─────────────────────────────────────────────────────────── */
.sc-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  transition: border-color var(--trans), background var(--trans);
}
.sc-card:hover { border-color: var(--muted); background: var(--bg3); }
.sc-card.active { border-color: var(--green); background: #0f1f1a; }
.sc-card-header { display: flex; justify-content: space-between; align-items: center; }
.sc-icon { font-size: 1.2rem; }
.sc-esc { color: var(--dim); font-size: 0.65rem; }
.sc-name { color: var(--text); font-weight: 700; font-size: 0.82rem; margin: 0.3rem 0 0.2rem; }
.sc-desc { color: var(--dim); font-size: 0.7rem; line-height: 1.3; }
.sc-bar { background: var(--bg); border-radius: 3px; height: 3px; margin-top: 0.5rem; overflow: hidden; }
.sc-bar-fill { height: 3px; border-radius: 3px; }

/* ── Chart containers ───────────────────────────────────────────────────────── */
.chart-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }

/* ── Spinner ────────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Download link ──────────────────────────────────────────────────────────── */
.dl-link {
  color: var(--cyan);
  font-size: 0.72rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--trans);
}
.dl-link:hover { border-bottom-color: var(--cyan); }

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #sidebar { width: 180px; min-width: 180px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  #content { padding: 1rem; }
}
@media (max-width: 480px) {
  #sidebar { display: none; }
}

/* ── Onboarding overlay ─────────────────────────────────────────────────────── */
.ob-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(5, 8, 18, 0.88);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  animation: ob-fadein 0.25s ease;
}
@keyframes ob-fadein { from { opacity: 0; } to { opacity: 1; } }

.ob-modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 0 60px rgba(0, 255, 136, 0.08), 0 24px 64px rgba(0,0,0,0.6);
  max-width: 520px; width: 100%;
  padding: 2rem 2rem 1.5rem;
  position: relative;
  animation: ob-slide 0.3s cubic-bezier(0.22,1,0.36,1);
}
@keyframes ob-slide { from { transform: translateY(18px); opacity: 0; } to { transform: none; opacity: 1; } }

.ob-skip {
  position: absolute; top: 1rem; right: 1rem;
  background: none; border: none; color: var(--dim);
  font-family: var(--font); font-size: 0.7rem; cursor: pointer;
  text-transform: uppercase; letter-spacing: 0.08em;
  transition: color var(--trans);
}
.ob-skip:hover { color: var(--muted); }

/* Step visibility */
.ob-step { display: none; }
.ob-step.ob-active { display: block; animation: ob-slide 0.22s ease; }

/* Step 1 — Hero */
.ob-hero-icon { font-size: 3rem; text-align: center; display: block; margin-bottom: 0.5rem; }
.ob-title {
  text-align: center; color: var(--green);
  font-size: 1.5rem; font-weight: 700; letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}
.ob-title span { color: var(--text); }
.ob-tagline { text-align: center; color: var(--muted); font-size: 0.85rem; margin-bottom: 1.5rem; }

.ob-stats {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem; margin-bottom: 1.25rem;
}
.ob-stat {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 0.75rem;
  text-align: center;
}
.ob-stat-val { color: var(--green); font-size: 1.4rem; font-weight: 700; }
.ob-stat-lbl { color: var(--dim); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.07em; margin-top: 0.15rem; }

.ob-features {
  list-style: none; margin-bottom: 1.25rem;
  display: flex; flex-direction: column; gap: 0.45rem;
}
.ob-features li {
  color: var(--muted); font-size: 0.8rem;
  padding: 0.4rem 0.6rem;
  border-left: 2px solid var(--border);
  line-height: 1.4;
}
.ob-features li:hover { border-left-color: var(--green); color: var(--text); }

.ob-trust {
  text-align: center; color: var(--dim);
  font-size: 0.65rem; letter-spacing: 0.06em;
  text-transform: uppercase; margin-bottom: 1.25rem;
}
.ob-trust span { color: var(--green); }

/* Step 2 — Scenario picker */
.ob-sc-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 0.6rem; margin: 0.75rem 0 1rem;
}
.ob-sc-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 0.75rem 0.6rem;
  cursor: pointer; text-align: center;
  transition: border-color var(--trans), background var(--trans), transform var(--trans);
}
.ob-sc-card:hover { border-color: var(--green); background: #0f1f1a; transform: translateY(-2px); }
.ob-sc-card-icon { font-size: 1.6rem; display: block; margin-bottom: 0.3rem; }
.ob-sc-card-name { color: var(--text); font-size: 0.72rem; font-weight: 600; line-height: 1.3; margin-bottom: 0.25rem; }
.ob-sc-card-esc { color: var(--dim); font-size: 0.62rem; }
.ob-sc-bar { background: var(--border); border-radius: 2px; height: 2px; margin-top: 0.4rem; overflow: hidden; }
.ob-sc-bar-fill { height: 2px; border-radius: 2px; }

/* Step 3 — NL terminal */
.ob-terminal {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 1rem;
  margin: 0.75rem 0 1.25rem; font-family: var(--font);
}
.ob-terminal-header {
  display: flex; align-items: center; gap: 0.4rem;
  margin-bottom: 0.6rem; padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.ob-dot-r { width: 8px; height: 8px; border-radius: 50%; background: #ff3855; }
.ob-dot-y { width: 8px; height: 8px; border-radius: 50%; background: #ffa500; }
.ob-dot-g { width: 8px; height: 8px; border-radius: 50%; background: #00ff88; }
.ob-terminal-label { color: var(--dim); font-size: 0.65rem; margin-left: auto; }
.ob-terminal-prompt {
  color: var(--dim); font-size: 0.78rem; display: flex; align-items: center; gap: 0.4rem;
  margin-bottom: 0.4rem;
}
.ob-terminal-prompt::before { content: '❯'; color: var(--green); }
.ob-typewriter { color: var(--cyan); font-size: 0.82rem; min-height: 1.1rem; }
.ob-cursor { display: inline-block; width: 7px; height: 1em; background: var(--cyan); vertical-align: text-bottom; animation: blink 0.9s step-end infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }
.ob-terminal-result {
  margin-top: 0.6rem; padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  color: var(--green); font-size: 0.72rem;
  min-height: 1.2rem; transition: opacity 0.2s;
}

.ob-nl-chips {
  display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem;
}
.ob-chip {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 4px; color: var(--muted);
  font-size: 0.68rem; padding: 0.25rem 0.6rem;
  cursor: pointer; transition: all var(--trans); font-family: var(--font);
}
.ob-chip:hover { border-color: var(--cyan); color: var(--cyan); }

/* Actions row */
.ob-actions {
  display: flex; gap: 0.6rem; align-items: center;
  margin-top: 0.75rem;
}
.ob-actions .btn { flex: 1; }
.btn-ghost {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--muted);
  cursor: pointer; font-family: var(--font);
  font-size: 0.75rem; padding: 0.45rem 1rem;
  transition: all var(--trans);
}
.btn-ghost:hover { border-color: var(--muted); color: var(--text); }

/* Step dots */
.ob-dots {
  display: flex; justify-content: center; gap: 0.4rem;
  margin-top: 1.25rem;
}
.ob-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--border); transition: all var(--trans);
}
.ob-dot.ob-dot-active { background: var(--green); width: 18px; border-radius: 3px; }

/* Kbd hint */
.ob-esc-hint { text-align: center; color: var(--dim); font-size: 0.62rem; margin-top: 0.5rem; }
kbd {
  background: var(--bg); border: 1px solid var(--border); border-radius: 3px;
  color: var(--muted); font-family: var(--font); font-size: 0.6rem;
  padding: 1px 4px;
}

/* ── Scenario Comparison ─────────────────────────────────────────────────────── */
.cmp-selector {
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: end; gap: 1rem; margin-bottom: 0.5rem;
  max-width: 680px;
}
.cmp-vs {
  color: var(--red); font-size: 1.1rem; font-weight: 700;
  letter-spacing: 0.1em; padding-bottom: 0.35rem; text-align: center;
}
.cmp-panels {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem;
}
.cmp-panel {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; padding: 1rem;
  transition: border-color var(--trans);
}
.cmp-panel-header {
  display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.4rem;
}
.cmp-panel-icon { font-size: 1.3rem; }
.cmp-panel-name { color: var(--text); font-weight: 700; font-size: 0.88rem; line-height: 1.3; }
.cmp-panel-meta { color: var(--muted); font-size: 0.78rem; }
.cmp-table th:nth-child(4), .cmp-table td:nth-child(4) { text-align: right; }
@media (max-width: 768px) {
  .cmp-selector { grid-template-columns: 1fr; }
  .cmp-vs { display: none; }
  .cmp-panels { grid-template-columns: 1fr; }
}