:root {
  --bg: #0e0f13;
  --bg-panel: #15171d;
  --bg-card: #1a1d25;
  --bg-elevated: #21242e;
  --border: #2a2e3a;
  --border-soft: #232631;
  --text: #eef0f4;
  --text-dim: #9aa1b1;
  --text-faint: #676e7d;
  --accent: #ffb454;
  --accent-strong: #ffa733;
  --accent-cool: #6cb6ff;
  --violet: #b389f9;
  --good: #56d58a;
  --radius: 12px;
  --radius-lg: 18px;
  --maxw: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  color: inherit;
}

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

/* ambient background glow */

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  z-index: -1;
  pointer-events: none;
}

.glow--a {
  width: 560px;
  height: 560px;
  top: -180px;
  left: -120px;
  background: var(--accent);
}

.glow--b {
  width: 480px;
  height: 480px;
  top: 400px;
  right: -160px;
  background: var(--violet);
  opacity: 0.2;
}

/* ---------- nav ---------- */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.brand-mark {
  color: var(--accent);
  font-size: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: var(--text-dim);
}

.nav-links a:not(.btn) {
  text-decoration: none;
}

.nav-links a:not(.btn):hover {
  color: var(--text);
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent);
  color: #1a1204;
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-strong);
}

.btn--ghost {
  background: var(--bg-elevated);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--accent);
}

/* ---------- hero ---------- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 52ch;
  margin: 0 0 28px;
}

.hero-sub em {
  color: var(--text);
  font-style: normal;
  font-weight: 600;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero-install {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #090a0d;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  max-width: fit-content;
}

.hero-install code {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 12.5px;
  color: var(--accent-cool);
  white-space: nowrap;
  overflow-x: auto;
}

.copy-btn {
  flex-shrink: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.copy-btn.copied {
  color: var(--good);
  border-color: var(--good);
}

/* ---------- hero mockups (illustrative, not real screenshots) ---------- */

.hero-mockups {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mock {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
}

.mock--desktop {
  width: 100%;
  max-width: 460px;
  padding: 14px;
  transform: rotate(-1.5deg);
  overflow: hidden;
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px 12px;
  font-size: 11px;
  color: var(--text-dim);
}

.mock-titletext {
  font-weight: 600;
  color: var(--text);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.dot--good {
  background: var(--good);
  box-shadow: 0 0 6px rgba(86, 213, 138, 0.7);
}

.mock-master {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 11px;
  margin-bottom: 10px;
}

.mock-master strong {
  display: block;
  font-size: 12.5px;
}

.mock-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 10.5px;
  color: var(--text-dim);
}

.mock-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
}

.mock-card {
  min-width: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.mock-card-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
}

.mock-card-head strong {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mock-identify {
  color: var(--accent-cool);
  font-size: 12px;
}

.mock-sub {
  font-size: 9.5px;
  color: var(--text-faint);
  margin-top: -4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mock-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--text-dim);
  min-width: 0;
}

.mock-row > span:first-child {
  width: 38px;
  flex-shrink: 0;
}

.mock-value {
  font-size: 10px;
  color: var(--text);
  width: 34px;
  text-align: right;
  flex-shrink: 0;
}

.mock-slider {
  position: relative;
  flex: 1;
  height: 4px;
  border-radius: 3px;
  background: var(--border);
}

.mock-slider--hue {
  background: linear-gradient(to right, red, yellow, lime, cyan, blue, magenta, red);
}

.mock-slider--temp {
  background: linear-gradient(to right, #ff9d3f, #ffe1b0, #cfe4ff, #7fb8ff);
}

.mock-slider span {
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-card);
  transform: translate(-50%, -50%);
}

.mock-badge {
  background: rgba(179, 137, 249, 0.18);
  border: 1px solid rgba(179, 137, 249, 0.45);
  color: var(--violet);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 9.5px;
}

.mock-tags {
  display: flex;
  gap: 5px;
}

.mock-tag {
  font-size: 9px;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-faint);
}

.mock-tag.is-on {
  background: rgba(255, 180, 84, 0.15);
  border-color: rgba(255, 180, 84, 0.45);
  color: var(--accent);
}

.mock--phone {
  position: absolute;
  right: -18px;
  bottom: -34px;
  width: 128px;
  padding: 10px 10px 16px;
  transform: rotate(4deg);
}

.mock-phone-notch {
  width: 34px;
  height: 4px;
  border-radius: 3px;
  background: var(--border);
  margin: 0 auto 10px;
}

.mock-phone-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-preset-row {
  display: flex;
  gap: 4px;
  font-size: 8px;
  color: var(--text-faint);
}

.mock-preset-row span {
  flex: 1;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 3px 0;
}

.mock-preset-row span.is-on {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- sections ---------- */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 70px 24px;
  border-top: 1px solid var(--border-soft);
}

.section-title {
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 62ch;
  margin: 0 0 40px;
}

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

.feature-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.feature-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--bg-elevated);
  color: var(--accent);
  font-size: 18px;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-dim);
  margin: 0;
}

/* ---------- effects ---------- */

.effects-groups {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.effects-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  margin: 0 0 14px;
}

.dot--classic {
  background: var(--accent);
}

.dot--color {
  background: var(--violet);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 13.5px;
}

.chip--color {
  border-color: rgba(179, 137, 249, 0.4);
  color: var(--violet);
}

/* ---------- install steps ---------- */

.steps {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.steps p {
  margin: 0 0 8px;
  font-weight: 600;
}

.steps pre {
  margin: 0;
  background: #090a0d;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
}

.steps code {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 13px;
  color: var(--accent-cool);
}

.steps .muted {
  font-weight: 400;
  font-size: 13px;
  margin-top: 8px;
}

.install-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- footer ---------- */

.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 70px;
  border-top: 1px solid var(--border-soft);
  font-size: 13.5px;
}

.footer p {
  margin: 0 0 6px;
}

/* ---------- reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- responsive ---------- */

@media (max-width: 920px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-mockups {
    margin-top: 20px;
  }
  .mock--phone {
    right: -8px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    gap: 14px;
    font-size: 13px;
  }
  .nav-links a:not(.btn) {
    display: none;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .mock-cards {
    grid-template-columns: 1fr;
  }
  .mock--phone {
    display: none;
  }
  .hero-install {
    max-width: 100%;
  }
  .hero-install code {
    max-width: 200px;
  }
}