:root {
  --bg: #09100a;
  --bg-card: #0f1810;
  --bg-step: #111c12;
  --accent: #5a8f3c;
  --accent-bright: #7ec84a;
  --accent-dim: #3a5e28;
  --text: #d8e8c8;
  --text-dim: #6a8a58;
  --border: #223318;
  --locked: #2a2e28;
  --locked-text: #4a5448;
  --danger: #8f3c3c;
  --warn: #8f6a3c;
  --terminal-bg: #060e06;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  line-height: 1.6;
}

a { color: var(--accent-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── NAV ─────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: rgba(9,16,10,0.95);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
}

.nav-logo span {
  color: var(--accent-bright);
}

.nav-logo-icon {
  height: 1.1em;
  width: auto;
  vertical-align: middle;
  margin-right: 0.1em;
  position: relative;
  top: -0.05em;
  filter: invert(1) sepia(1) saturate(3) hue-rotate(57deg) brightness(78%);
}

.nav-links { display: flex; gap: 2rem; font-size: 0.8rem; letter-spacing: 0.1em; }
.nav-links a { color: var(--text-dim); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ── HERO ────────────────────────────────────────── */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  background:
    radial-gradient(ellipse 60% 40% at 50% 40%, rgba(90,143,60,0.08) 0%, transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  line-height: 1;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.hero h1 span { color: var(--accent-bright); }

.hero-rule {
  width: 4rem;
  height: 1px;
  background: var(--accent-dim);
  margin: 1.5rem auto;
}

.hero-desc {
  max-width: 680px;
  font-size: 1.05rem;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.hero-badges {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}

.badge {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
}

.hero-cta {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--accent);
  color: #050d05;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
}

.hero-cta:hover {
  background: var(--accent-bright);
  text-decoration: none;
}

/* ── FEATURES ────────────────────────────────────── */
.features {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.features-header {
  text-align: center;
  margin-bottom: 3rem;
}

.features-header h2 {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--accent);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.feature-card {
  background: var(--bg-card);
  padding: 2rem 1.75rem;
}

.feature-card:hover {
  background: var(--bg-step);
}

.feature-glyph {
  font-size: 1.5rem;
  color: var(--accent-dim);
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--accent-bright);
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ── SECTION DIVIDER ─────────────────────────────── */
.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ── CTA SECTION ─────────────────────────────────── */
.cta-section {
  padding: 5rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

.cta-section h2 {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.cta-section p {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* ── BUILD PAGE ──────────────────────────────────── */
.build-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.build-header {
  text-align: center;
  margin-bottom: 4rem;
}

.build-header .eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.build-header h1 {
  font-size: 1.8rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.build-header p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.steps { display: flex; flex-direction: column; gap: 0; }

.step {
  display: grid;
  grid-template-columns: 5rem 1fr;
  border: 1px solid var(--border);
  margin-bottom: -1px;
  background: var(--bg-step);
  transition: background 0.15s;
}

.step.locked {
  background: #0b0e0b;
  border-color: #1a1e1a;
}

.step-number {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2rem 0 2rem;
  border-right: 1px solid var(--border);
}

.step.locked .step-number {
  border-color: #1a1e1a;
}

.step-num-label {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.step.locked .step-num-label { color: var(--locked-text); }

.step-num-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.step.locked .step-num-value { color: var(--locked-text); }

.step-body { padding: 2rem; }

.step-tag {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.step.locked .step-tag { color: var(--locked-text); }

.step-body h2 {
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.step.locked .step-body h2 { color: var(--locked-text); }

.step-body p, .step-body ul {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.step.locked .step-body p { color: var(--locked-text); }

.step-body ul { padding-left: 1.25rem; }
.step-body ul li { margin-bottom: 0.25rem; }

.step-action {
  margin-top: 1.25rem;
}

/* ── FLASH MODE SELECTOR ─────────────────────────── */
.flash-mode-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.flash-mode-option {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.flash-mode-option input[type="radio"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.flash-mode-desc {
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

/* ── BUTTONS ─────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.7rem 1.75rem;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #050d05;
}

.btn-primary:hover {
  background: var(--accent-bright);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
}

.btn-outline:hover {
  background: var(--accent-dim);
  color: var(--text);
  text-decoration: none;
}

.btn:disabled, .btn[disabled] {
  background: var(--locked);
  color: var(--locked-text);
  cursor: not-allowed;
  border-color: var(--locked);
}

/* ── STATUS BADGE ────────────────────────────────── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  padding: 0.3rem 0.75rem;
  border: 1px solid;
}

.status-badge.locked { border-color: #2a2e28; color: var(--locked-text); }
.status-badge.active { border-color: var(--accent-dim); color: var(--accent); }
.status-badge.complete { border-color: var(--accent); color: var(--accent-bright); }

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ── FLASH PANEL ─────────────────────────────────── */
.flash-panel {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
}

.flash-panel-header {
  padding: 0.6rem 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flash-terminal {
  background: var(--terminal-bg);
  padding: 1rem;
  min-height: 160px;
  max-height: 280px;
  overflow-y: auto;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #5aaa4a;
}

.flash-terminal .line { margin-bottom: 0.1rem; }
.flash-terminal .line.info { color: #5aaa4a; }
.flash-terminal .line.warn { color: #aa8a3a; }
.flash-terminal .line.err  { color: #aa4a3a; }
.flash-terminal .line.dim  { color: #3a5a38; }

.progress-bar-wrap {
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
  display: none;
}

.progress-bar-wrap.visible { display: block; }

.progress-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
  display: flex;
  justify-content: space-between;
}

.progress-bar {
  height: 4px;
  background: var(--border);
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s;
  width: 0%;
}

/* ── AUTH OVERLAY ────────────────────────────────── */
.auth-strip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.auth-strip label {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.auth-strip input {
  flex: 1;
  min-width: 200px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.auth-strip input:focus { border-color: var(--accent-dim); }

/* ── SUCCESS / ERROR ─────────────────────────────── */
.flash-success {
  padding: 1.5rem;
  background: rgba(90,143,60,0.08);
  border: 1px solid var(--accent-dim);
  margin-top: 1rem;
  display: none;
}

.flash-success.visible { display: block; }
.flash-success h3 { color: var(--accent-bright); font-size: 0.9rem; letter-spacing: 0.15em; margin-bottom: 0.5rem; }
.flash-success p { color: var(--text-dim); font-size: 0.85rem; }

/* ── FOOTER ──────────────────────────────────────── */
footer {
  padding: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 600px) {
  .step { grid-template-columns: 3.5rem 1fr; }
  .step-number { padding: 1.5rem 0; }
  .step-body { padding: 1.5rem 1rem; }
  nav { padding: 1rem; }
  .nav-links { gap: 1rem; }
}