/* ============================================================
   Acme Inc — Landing Page Stylesheet
   Palette: warm off-white #fafaf8 | ink #1a1a1a | amber accent #e8a020
   Fonts: Instrument Serif (headings) + Satoshi (body)
   ============================================================ */

:root {
  --bg:         #fafaf8;
  --bg-alt:     #f2f0ec;
  --ink:        #1a1a1a;
  --ink-mid:    #4a4a4a;
  --ink-muted:  #888;
  --accent:     #e8a020;
  --accent-dark:#c07d10;
  --border:     #e2dfd8;
  --radius:     4px;
  --max-width:  1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ---- UTILITY ---- */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- NAV ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-family: 'Satoshi', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color 0.18s ease;
}

.nav-link:hover {
  color: var(--accent);
}

.wordmark {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 22px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-cta {
  font-family: 'Satoshi', sans-serif;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
  padding: 8px 18px;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  transition: background 0.18s ease, color 0.18s ease;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--bg);
}

/* ---- HERO ---- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 24px 120px;
  background: var(--bg);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: 'Satoshi', sans-serif;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-headline {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(52px, 8vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 28px;
}

.hero-headline em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-mid);
  max-width: 540px;
  margin-bottom: 44px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  font-family: 'Satoshi', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--bg);
  background: var(--ink);
  padding: 14px 32px;
  border-radius: var(--radius);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: background 0.18s ease, transform 0.15s ease;
  box-shadow: 0 4px 20px rgba(26,26,26,0.18);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(232,160,32,0.22);
}

.btn-ghost {
  display: inline-block;
  font-family: 'Satoshi', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-mid);
  text-decoration: none;
  padding: 14px 4px;
  border-bottom: 1.5px solid var(--border);
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

/* Subtle grid texture in hero */
.hero-grid-accent {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

/* ---- FEATURES ---- */
.features {
  padding: 96px 24px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 56px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.45s ease, transform 0.45s ease, box-shadow 0.2s ease;
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  box-shadow: 0 8px 32px rgba(26,26,26,0.08);
}

.feature-icon {
  display: block;
  font-size: 28px;
  margin-bottom: 16px;
  line-height: 1;
}

.feature-card h3 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-mid);
}

/* ---- INTERACTIVE DEMO ---- */
.demo-section {
  padding: 96px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.demo-inner {
  max-width: var(--max-width);
}

.demo-eyebrow {
  font-family: 'Satoshi', sans-serif;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 12px;
}

.demo-sub {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-mid);
  max-width: 480px;
  margin-bottom: 56px;
}

.demo-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: start;
}

/* Controls panel */
.demo-controls {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-label {
  font-family: 'Satoshi', sans-serif;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mid);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.control-value {
  font-family: 'Satoshi', sans-serif;
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  text-transform: none;
  letter-spacing: 0;
}

.control-text-input {
  font-family: 'Satoshi', sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 14px;
  outline: none;
  width: 100%;
  transition: border-color 0.18s ease;
}

.control-text-input:focus {
  border-color: var(--accent);
}

/* Segmented controls */
.segmented {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
}

.seg-btn {
  flex: 1;
  font-family: 'Satoshi', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-mid);
  background: transparent;
  border: none;
  border-radius: 2px;
  padding: 6px 8px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  min-height: 32px;
}

.seg-btn:hover {
  color: var(--ink);
  background: var(--bg-alt);
}

.seg-btn--active {
  background: var(--ink);
  color: var(--bg);
}

.seg-btn--active:hover {
  background: var(--ink);
  color: var(--bg);
}

/* Color swatches */
.color-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.swatch {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--sw);
  border: 2.5px solid transparent;
  cursor: pointer;
  outline: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.swatch:hover {
  transform: scale(1.12);
}

.swatch--active {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--ink);
  transform: scale(1.06);
}

/* Range slider */
.control-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

.control-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 1px 6px rgba(0,0,0,0.2);
  transition: transform 0.15s ease;
}

.control-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.control-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 1px 6px rgba(0,0,0,0.2);
}

/* Preview panel */
.demo-preview {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.preview-canvas {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-alt);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Subtle dot-grid background on preview canvas */
.preview-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.6;
  pointer-events: none;
}

.widget-preview-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.widget-preview {
  font-family: 'Satoshi', sans-serif;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.14s ease, box-shadow 0.14s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  /* Base styles overridden by JS */
  background: var(--accent);
  color: var(--ink);
  border: 2px solid transparent;
  border-radius: 4px;
  padding: 13px 28px;
  font-size: 15px;
}

.widget-preview:hover {
  transform: translateY(-2px);
}

.widget-preview:active {
  transform: translateY(0) scale(0.97);
}

/* Ripple effect */
.widget-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  pointer-events: none;
  animation: ripple-out 0.5s ease-out forwards;
}

@keyframes ripple-out {
  from { opacity: 1; transform: scale(0); }
  to   { opacity: 0; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .widget-preview {
    transition: none;
  }
}

.preview-caption {
  font-size: 12px;
  color: var(--ink-muted);
  text-align: center;
  font-style: italic;
}

/* Demo CTA bar */
.demo-cta-bar {
  margin-top: 56px;
  text-align: center;
}

.btn-demo-cta {
  display: inline-block;
  font-family: 'Satoshi', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.btn-demo-cta:hover {
  color: var(--accent);
}

/* ---- SOCIAL PROOF ---- */
.proof {
  padding: 56px 24px;
  background: var(--bg);
}

.proof-inner {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.proof-label {
  font-family: 'Satoshi', sans-serif;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  white-space: nowrap;
}

.proof-text {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(20px, 3vw, 28px);
  font-style: italic;
  color: var(--ink-mid);
  letter-spacing: -0.01em;
}

/* ---- WAITLIST ---- */
.waitlist-section {
  padding: 96px 24px;
  background: var(--ink);
}

.waitlist-inner {
  max-width: 640px;
}

.waitlist-section .section-title {
  color: var(--bg);
}

.waitlist-sub {
  font-size: 16px;
  line-height: 1.65;
  color: #a0a0a0;
  margin-bottom: 36px;
  max-width: 480px;
}

.waitlist-form {
  width: 100%;
}

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

.email-input {
  flex: 1;
  min-width: 220px;
  font-family: 'Satoshi', sans-serif;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  padding: 13px 18px;
  outline: none;
  transition: border-color 0.18s ease;
}

.email-input::placeholder {
  color: var(--ink-muted);
}

.email-input:focus {
  border-color: var(--accent);
}

.btn-submit {
  font-family: 'Satoshi', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  padding: 13px 28px;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.15s ease;
  white-space: nowrap;
}

.btn-submit:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.btn-submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn-spinner {
  letter-spacing: 0.2em;
  animation: pulse 0.8s ease-in-out infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.4; }
  to   { opacity: 1; }
}

.form-message {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.5;
  min-height: 20px;
}

.form-message--success { color: #5fca87; }
.form-message--error   { color: #f08080; }

/* ---- FOOTER ---- */
.footer {
  background: #111;
  border-top: 1px solid #2a2a2a;
  padding: 28px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 13px;
  color: #666;
}

.footer-contact {
  font-size: 13px;
  color: #888;
  text-decoration: none;
  transition: color 0.18s;
}

.footer-contact:hover {
  color: var(--accent);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 720px) {
  .demo-layout {
    grid-template-columns: 1fr;
  }
  .demo-controls {
    order: 2;
  }
  .demo-preview {
    order: 1;
  }
}

@media (max-width: 600px) {
  .hero { padding: 72px 20px 88px; }
  .hero-ctas { gap: 12px; }
  .nav-cta { display: none; }
  .nav-link { display: none; }
  .form-row { flex-direction: column; }
  .btn-submit { width: 100%; }
  .proof-inner { flex-direction: column; gap: 6px; }
  .demo-section { padding: 72px 20px; }
  .demo-sub { margin-bottom: 36px; }
  .segmented { flex-wrap: wrap; }
  .preview-canvas { min-height: 180px; }
}