/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0f1e;
  --bg-alt:    #0d1428;
  --surface:   #111827;
  --surface2:  #1a2236;
  --border:    rgba(255,255,255,0.08);
  --blue:      #1d4ed8;
  --blue-light:#3b82f6;
  --blue-glow: rgba(29,78,216,0.35);
  --accent:    #60a5fa;
  --text:      #e2e8f0;
  --text-muted:#94a3b8;
  --text-dim:  #64748b;
  --red:       #ef4444;
  --green:     #22c55e;
  --radius:    12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

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

code {
  font-family: 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.85em;
  background: rgba(255,255,255,0.07);
  padding: 2px 6px;
  border-radius: 4px;
  color: #93c5fd;
}

kbd {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.8em;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #060d1f 0%, #0d1f4a 50%, #0a1535 100%);
  padding-bottom: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 30%, rgba(29,78,216,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(96,165,250,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 56px;
}

/* Left */
.hero-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.logo-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 16px rgba(29,78,216,0.6));
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}

.version-tag {
  display: inline-block;
  background: rgba(96,165,250,0.15);
  border: 1px solid rgba(96,165,250,0.3);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  margin-left: 12px;
  letter-spacing: 0.5px;
}

.accent { color: var(--accent); }

.hero-badge {
  display: inline-block;
  background: linear-gradient(90deg, #1d4ed8, #2563eb);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 0.3px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.hf-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.hf-icon { font-size: 1.2rem; margin-top: 1px; }

.hf-item strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
}

.hf-item span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid;
  transition: opacity 0.2s;
}
.badge-pill:hover { opacity: 0.8; text-decoration: none; }
.badge-pill svg { width: 14px; height: 14px; }

.badge-pill.ha    { background: rgba(24,118,210,0.15); border-color: #1876d2; color: #90caf9; }
.badge-pill.hacs  { background: rgba(255,140,0,0.12);  border-color: #ff8c00; color: #ffb347; }
.badge-pill.custom{ background: rgba(96,165,250,0.1);  border-color: var(--blue-light); color: var(--accent); }
.badge-pill.discord{ background: rgba(88,101,242,0.15); border-color: #5865f2; color: #a5b4fc; }

/* Right – Card Preview */
.hero-right {
  display: flex;
  justify-content: center;
}

.card-preview {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 20px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.card-header-icon { font-size: 1.3rem; }

.card-title { font-weight: 700; font-size: 1rem; color: #fff; }
.card-subtitle { font-size: 0.75rem; color: var(--text-muted); }

.card-date {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--surface2);
  padding: 4px 10px;
  border-radius: 6px;
}

.card-table { font-size: 0.72rem; }

.table-head {
  display: grid;
  grid-template-columns: 28px repeat(5, 1fr);
  gap: 2px;
  margin-bottom: 4px;
}

.th-cell {
  text-align: center;
  color: var(--text-dim);
  font-weight: 600;
  padding: 4px 2px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.th-today {
  background: var(--blue);
  color: #fff;
  border-radius: 4px;
}

.th-nr { color: var(--text-dim); }

.table-row {
  display: grid;
  grid-template-columns: 28px repeat(5, 1fr);
  gap: 2px;
  margin-bottom: 2px;
}

.td-nr {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.68rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.td-cell {
  text-align: center;
  padding: 5px 2px;
  border-radius: 4px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  font-size: 0.68rem;
}

.td-today {
  background: rgba(29,78,216,0.2);
  color: #93c5fd;
}

.td-sub {
  background: rgba(239,68,68,0.2) !important;
  color: #fca5a5 !important;
}

.table-pause {
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-dim);
  padding: 4px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 4px 0;
}

.card-legend {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.7rem;
}

.legend-today { color: var(--blue-light); }
.legend-sub   { color: var(--red); }

/* Bottom bar */
.hero-bottom-bar {
  background: rgba(0,0,0,0.3);
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.hero-bottom-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.hb-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
}

.hb-item span:first-child { font-size: 1.3rem; }

.hb-item strong {
  display: block;
  color: #fff;
  font-size: 0.82rem;
}

.hb-item small {
  color: var(--text-dim);
  font-size: 0.72rem;
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--blue-light);
  margin-bottom: 10px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 40px;
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
  width: fit-content;
  margin-bottom: 32px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.tab-btn:hover { color: #fff; background: rgba(255,255,255,0.05); }

.tab-btn.active {
  background: var(--blue);
  color: #fff;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== STEPS ===== */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 24px;
  position: relative;
  padding-bottom: 40px;
}

.step:last-child { padding-bottom: 0; }

.step::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), transparent);
}

.step:last-child::before { display: none; }

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(29,78,216,0.2);
  position: relative;
  z-index: 1;
}

.step-body {
  flex: 1;
  padding-top: 8px;
}

.step-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.step-body p {
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.7;
}

/* ===== CODE BLOCKS ===== */
.code-block {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
}

.code-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}

.code-line {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
}

.code-line code {
  background: none;
  padding: 0;
  flex: 1;
  font-size: 0.82rem;
  color: #93c5fd;
  word-break: break-all;
}

.code-line.inline {
  padding: 0;
  margin-top: 6px;
}

.code-pre {
  padding: 16px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.7;
  color: #93c5fd;
  font-family: 'Fira Code', 'Cascadia Code', monospace;
  position: relative;
}

.code-pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.copy-btn {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  font-family: inherit;
  flex-shrink: 0;
}

.copy-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
.copy-btn.copied { background: rgba(34,197,94,0.15); border-color: #22c55e; color: #22c55e; }

.copy-pre {
  position: absolute;
  top: 10px;
  right: 10px;
}

/* ===== INFO BOX ===== */
.info-box {
  display: flex;
  gap: 10px;
  background: rgba(29,78,216,0.1);
  border: 1px solid rgba(29,78,216,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.85rem;
  color: #93c5fd;
  margin-bottom: 14px;
}

/* ===== CONFIG FIELDS ===== */
.config-fields {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.config-field {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}

.cf-label {
  font-weight: 700;
  font-size: 0.82rem;
  color: #fff;
  min-width: 110px;
}

.cf-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== OPTIONS TABLE ===== */
.options-table {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 0.82rem;
}

.ot-head {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1.2fr;
  gap: 0;
  background: var(--surface2);
  padding: 10px 16px;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
}

.ot-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1.2fr;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  transition: background 0.15s;
}

.ot-row:hover { background: rgba(255,255,255,0.02); }

/* ===== SENSORS ===== */
.sensors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.sensor-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.2s, transform 0.2s;
}

.sensor-card:hover {
  border-color: rgba(29,78,216,0.5);
  transform: translateY(-2px);
}

.sensor-card.sensor-main {
  grid-column: span 3;
  background: linear-gradient(135deg, rgba(29,78,216,0.15), rgba(29,78,216,0.05));
  border-color: rgba(29,78,216,0.4);
}

.sensor-icon { font-size: 1.5rem; margin-bottom: 10px; }

.sensor-name {
  margin-bottom: 6px;
}

.sensor-name code {
  font-size: 0.8rem;
  color: #93c5fd;
}

.sensor-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item[open] { border-color: rgba(29,78,216,0.4); }

.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.92rem;
  color: #fff;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--text-dim);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-body {
  padding: 0 20px 16px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.faq-body ol {
  padding-left: 20px;
}

.faq-body li { margin-bottom: 6px; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #060d1f 0%, #0d1f4a 100%);
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta-inner h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.cta-inner p {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 1rem;
}

.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 4px 20px rgba(29,78,216,0.4);
}

.btn-primary:hover {
  background: #2563eb;
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-secondary {
  background: rgba(255,255,255,0.07);
  color: #fff;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-1px);
  text-decoration: none;
}

.version-badge {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ===== FOOTER ===== */
.footer {
  background: #060b18;
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}

.footer-links {
  display: flex;
  gap: 20px;
  margin-left: auto;
}

.footer-links a {
  font-size: 0.82rem;
  color: var(--text-dim);
  transition: color 0.2s;
}

.footer-links a:hover { color: #fff; text-decoration: none; }

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-dim);
  width: 100%;
  text-align: center;
  margin-top: 8px;
}

.footer-copy .by {
  color: var(--accent);
  font-weight: 600;
}

/* ===== DOWNLOAD BUTTON ===== */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 50%, #3b82f6 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(29,78,216,0.45);
  transition: transform 0.2s, box-shadow 0.2s;
  margin-bottom: 10px;
}

.download-btn:hover {
  transform: scale(1.04) translateY(-1px);
  box-shadow: 0 8px 28px rgba(29,78,216,0.55);
  text-decoration: none;
  color: #fff;
}

/* ===== HACS BUTTON ===== */
.hacs-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #e07b00 0%, #ff8c00 50%, #ffa733 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(255,140,0,0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}

.hacs-btn:hover {
  transform: scale(1.04) translateY(-1px);
  box-shadow: 0 8px 28px rgba(255,140,0,0.55);
  text-decoration: none;
  color: #fff;
}

/* ===== OPTION GRID ===== */
.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
  margin-bottom: 14px;
}

.option-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s;
}

.option-card:hover {
  border-color: rgba(29,78,216,0.4);
}

.option-card-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  margin-bottom: 4px;
}

.option-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0;
}

.option-note {
  font-size: 0.78rem !important;
  color: var(--text-dim) !important;
  margin-top: 4px;
}

/* ===== RESPONSIVE ===== */

/* ── Tablet (≤900px) ── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 48px;
    padding-bottom: 40px;
    gap: 32px;
  }

  .hero-right { display: none; }

  .hero-bottom-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .sensors-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sensor-card.sensor-main { grid-column: span 2; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-showcase { grid-template-columns: 1fr; gap: 16px; }

  .preview-layout { grid-template-columns: 1fr; }
  .dashboard-screenshots { grid-template-columns: 1fr; }
  .dash-features { grid-template-columns: repeat(2, 1fr); }
}

/* ── Mobile (≤640px) ── */
@media (max-width: 640px) {
  /* Base */
  body { font-size: 14px; }
  .container { padding: 0 16px; }
  .section { padding: 52px 0; }

  /* Hero */
  .hero-inner { padding-top: 36px; padding-bottom: 32px; gap: 24px; }
  .hero-title { font-size: 1.9rem; letter-spacing: -0.3px; }
  .hero-logo { gap: 10px; margin-bottom: 12px; }
  .logo-icon { width: 44px; height: 44px; }
  .hero-badge { font-size: 0.78rem; padding: 5px 14px; }
  .hero-sub { font-size: 0.95rem; margin-bottom: 20px; }
  .hero-features { grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }
  .hf-item { padding: 10px 10px; gap: 8px; }
  .hf-icon { font-size: 1rem; }
  .hf-item strong { font-size: 0.76rem; }
  .hf-item span { font-size: 0.68rem; }
  .hero-badges-row { gap: 6px; }
  .badge-pill { font-size: 0.72rem; padding: 5px 10px; }

  /* Bottom bar */
  .hero-bottom-bar { padding: 14px 0; }
  .hero-bottom-inner { grid-template-columns: 1fr 1fr; gap: 10px; }
  .hb-item { gap: 8px; font-size: 0.75rem; }
  .hb-item span:first-child { font-size: 1.1rem; }
  .hb-item strong { font-size: 0.75rem; }
  .hb-item small { font-size: 0.65rem; }

  /* Section headings */
  .section-title { font-size: 1.45rem; }
  .section-desc { font-size: 0.88rem; margin-bottom: 28px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; gap: 10px; margin-bottom: 28px; }
  .feature-card { padding: 16px; }
  .feature-icon { font-size: 1.5rem; margin-bottom: 8px; }
  .feature-card h3 { font-size: 0.9rem; }
  .feature-showcase { grid-template-columns: 1fr; gap: 14px; }

  /* Steps */
  .step { gap: 14px; padding-bottom: 28px; }
  .step-num { width: 34px; height: 34px; font-size: 0.88rem; }
  .step::before { left: 16px; top: 38px; }
  .step-body h3 { font-size: 0.95rem; }
  .step-body p { font-size: 0.84rem; }

  /* Tabs */
  .tabs { width: 100%; }
  .tab-btn { padding: 8px 14px; font-size: 0.82rem; flex: 1; text-align: center; }

  /* Options grid */
  .option-grid { grid-template-columns: 1fr; gap: 10px; }
  .option-card { padding: 14px; }
  .option-card-title { font-size: 0.85rem; }

  /* Code blocks */
  .code-line { flex-wrap: wrap; gap: 8px; }
  .code-line code { font-size: 0.75rem; }
  .copy-btn { font-size: 0.68rem; padding: 3px 8px; }
  .code-pre { font-size: 0.75rem; padding: 12px; }

  /* Config fields */
  .config-field { flex-direction: column; align-items: flex-start; gap: 4px; }
  .cf-label { min-width: unset; }

  /* Options table */
  .ot-head, .ot-row { grid-template-columns: 1fr 1.2fr; }
  .ot-head span:last-child, .ot-row span:last-child { display: none; }

  /* Sensors */
  .sensors-grid { grid-template-columns: 1fr; gap: 10px; }
  .sensor-card.sensor-main { grid-column: span 1; }
  .sensor-card { padding: 14px; }

  /* FAQ */
  .faq-item summary { padding: 13px 16px; font-size: 0.86rem; }
  .faq-body { padding: 0 16px 14px; font-size: 0.84rem; }

  /* CTA */
  .cta-inner h2 { font-size: 1.5rem; }
  .cta-inner p { font-size: 0.9rem; margin-bottom: 20px; }
  .cta-buttons { flex-direction: column; align-items: stretch; gap: 10px; }
  .btn { justify-content: center; padding: 12px 20px; font-size: 0.88rem; }

  /* Footer */
  .footer { padding: 20px 0; }
  .footer-inner { flex-direction: column; text-align: center; gap: 14px; }
  .footer-logo { font-size: 1rem; }
  .footer-links { margin-left: 0; gap: 14px; flex-wrap: wrap; justify-content: center; }
  .footer-copy { margin-top: 4px; font-size: 0.74rem; }

  /* Info/download buttons */
  .hacs-btn, .download-btn { width: 100%; justify-content: center; }
  .info-box { font-size: 0.82rem; }
}

/* ===== NAVBAR ===== */
.topnav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(10,15,30,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.topnav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 56px;
}

.topnav-logo {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  text-decoration: none;
}

.topnav-links {
  display: flex;
  gap: 2px;
  flex: 1;
}

.topnav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}

.topnav-links a:hover,
.topnav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.07);
  text-decoration: none;
}

.topnav-cta {
  background: var(--blue);
  color: #fff !important;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 7px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.2s;
  text-decoration: none;
}

.topnav-cta:hover { background: #2563eb; text-decoration: none; }

/* Burger button (mobile) */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all 0.2s;
}

/* Mobile dropdown */
.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 8px 16px 12px;
  border-top: 1px solid var(--border);
  background: rgba(10,15,30,0.98);
}

.nav-mobile-menu.open { display: flex; }

.nav-mobile-menu a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-mobile-menu a:last-child { border-bottom: none; }
.nav-mobile-menu a:hover { color: #fff; }

@media (max-width: 768px) {
  .topnav-links { display: none; }
  .topnav-cta   { display: none; }
  .nav-burger   { display: flex; margin-left: auto; }
  .scroll-top   { bottom: 20px; right: 16px; width: 40px; height: 40px; }
}

/* ===== VERSION LABELS ===== */
.ver-label {
  display: inline-block;
  font-size: 0.7em;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 4px;
  letter-spacing: 0.3px;
}

.ver-stable {
  background: rgba(34,197,94,0.15);
  border: 1px solid rgba(34,197,94,0.35);
  color: #86efac;
}

.ver-beta {
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.35);
  color: #fcd34d;
}

.version-tag.ver-stable { background: rgba(34,197,94,0.12); border-color: rgba(34,197,94,0.3); color: #86efac; }
.version-tag.ver-beta   { background: rgba(245,158,11,0.12); border-color: rgba(245,158,11,0.3); color: #fcd34d; }

/* ===== FEATURED OPTION CARD ===== */
.option-card-featured {
  border-color: rgba(255,140,0,0.35) !important;
  background: linear-gradient(135deg, rgba(255,140,0,0.06), rgba(255,140,0,0.02)) !important;
}

.option-card-featured:hover {
  border-color: rgba(255,140,0,0.6) !important;
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(29,78,216,0.4);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
  display: block;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ===== FEATURE SHOWCASE ===== */
.feature-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.showcase-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.showcase-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.showcase-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-yellow { background: #f59e0b; box-shadow: 0 0 8px rgba(245,158,11,0.5); }

.showcase-mockup {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.showcase-svg {
  width: 100%;
  display: block;
}

/* ===== HERO MOCKUP ===== */
.hero-mockup-wrap {
  width: 100%;
  max-width: 500px;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06), 0 32px 80px rgba(0,0,0,0.6), 0 0 60px rgba(29,78,216,0.15);
}

.hero-mockup-svg {
  width: 100%;
  display: block;
}

/* Responsive */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-showcase { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(29,78,216,0.5);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s, background 0.2s;
  z-index: 300;
  pointer-events: none;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top:hover { background: #2563eb; transform: translateY(-2px); }
.scroll-top:active { transform: scale(0.93); }

.scroll-top svg {
  width: 20px;
  height: 20px;
}