/* ============================================
   SHARED DESIGN SYSTEM — Fix Your Signal
   Hooked on Content
   ============================================ */

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

/* TOKENS */
:root {
  --bg:       #0a0a0a;
  --surface:  #111111;
  --surface2: #161616;
  --surface3: #1a1a1a;
  --border:   #1f1f1f;
  --border2:  #2a2a2a;

  --teal:     #00d4aa;
  --teal-dim: rgba(0,212,170,0.08);
  --teal-mid: rgba(0,212,170,0.15);
  --red:      #ef4444;
  --red-dim:  rgba(239,68,68,0.07);
  --gold:     #f59e0b;
  --gold-dim: rgba(245,158,11,0.07);

  --white:    #ffffff;
  --light:    #9ca3af;
  --muted:    #6b7280;
  --faint:    #374151;

  --font:     'Inter', sans-serif;

  --radius:   6px;
  --radius-lg: 10px;

  --max-w:    680px;
  --max-w-wide: 900px;
}

/* BASE */
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

/* TYPOGRAPHY */
h1 {
  font-size: clamp(30px, 5.5vw, 48px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(22px, 3.8vw, 32px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(17px, 2.5vw, 20px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 16px;
  line-height: 1.7;
}
p:last-child { margin-bottom: 0; }

/* LAYOUT */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.container--wide {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px;
}

/* SECTIONS */
.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.section:last-of-type { border-bottom: none; }

.section--dark {
  background: var(--surface2);
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--white);
  text-decoration: none;
}

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

.header-nav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s;
}
.header-nav a:hover { color: var(--white); }
.header-nav .nav-cta { color: var(--teal); font-weight: 600; }
.header-nav .nav-cta:hover { color: #00b891; }

/* EYEBROW */
.eyebrow {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}

/* BUTTONS */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 15px 32px;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  letter-spacing: 0.01em;
  transition: opacity 0.18s, transform 0.15s;
  line-height: 1;
}

.btn--primary {
  background: var(--teal);
  color: #000;
}
.btn--primary:hover { opacity: 0.87; transform: translateY(-1px); }

.btn--secondary {
  background: transparent;
  color: var(--teal);
  border: 1px solid var(--teal);
}
.btn--secondary:hover { background: var(--teal-dim); }

.btn--ghost {
  background: var(--surface);
  color: var(--light);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: var(--border2); color: var(--white); }

.btn--lg {
  font-size: 16px;
  padding: 18px 38px;
}

.below-btn {
  font-size: 13px;
  color: var(--muted);
  margin-top: 12px;
}

/* CALLOUT / INTERRUPT */
.callout {
  border-left: 3px solid var(--teal);
  padding: 18px 22px;
  background: var(--teal-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 28px 0;
}
.callout--red {
  border-left-color: var(--red);
  background: var(--red-dim);
}
.callout--gold {
  border-left-color: var(--gold);
  background: var(--gold-dim);
}
.callout p {
  font-size: 16px;
  line-height: 1.65;
  margin-bottom: 8px;
}
.callout p:last-child { margin-bottom: 0; }

/* LADDER BAR */
.ladder {
  display: flex;
  gap: 0;
  margin: 0 0 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.ladder-step {
  flex: 1;
  padding: 10px 14px;
  background: var(--surface);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  border-right: 1px solid var(--border);
  position: relative;
}
.ladder-step:last-child { border-right: none; }

.ladder-step--active {
  background: var(--teal-mid);
  color: var(--teal);
}

.ladder-step--locked {
  color: var(--faint);
}

/* CARDS */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.18s;
}
.card:hover { border-color: var(--border2); }

.card--teal {
  border-color: rgba(0,212,170,0.3);
}
.card--teal:hover { border-color: rgba(0,212,170,0.5); }

/* STEP LIST */
.steps {
  display: flex;
  flex-direction: column;
  margin: 24px 0;
}

.step {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }

.step-num {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--teal);
  padding-top: 3px;
  min-width: 28px;
  flex-shrink: 0;
}

.step-body { flex: 1; }

.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 5px;
  line-height: 1.3;
}

.step-detail {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

/* OFFER CARDS */
.offer-cards {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 20px 0;
}

.offer-card {
  background: var(--surface);
  padding: 16px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.offer-card:nth-child(even) { background: var(--surface2); }

.offer-card-num {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--teal);
  padding-top: 2px;
  min-width: 26px;
  flex-shrink: 0;
}

.offer-card-body { flex: 1; }

.offer-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 3px;
}

.offer-card-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}

/* LISTS */
.list--dash, .list--check, .list--x, .list--arrow {
  list-style: none;
  padding: 0;
  margin: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.list--dash li,
.list--check li,
.list--x li,
.list--arrow li {
  font-size: 16px;
  padding-left: 22px;
  position: relative;
  line-height: 1.55;
}

.list--dash li { color: var(--muted); }
.list--dash li::before { content: '—'; position: absolute; left: 0; color: var(--border2); }

.list--check li { color: var(--light); }
.list--check li::before { content: '→'; position: absolute; left: 0; color: var(--teal); }

.list--x li { color: var(--muted); }
.list--x li::before { content: '✕'; position: absolute; left: 0; color: var(--red); font-size: 12px; top: 4px; }

.list--arrow li { color: var(--white); }
.list--arrow li::before { content: '→'; position: absolute; left: 0; color: var(--teal); }

/* PRICE BLOCK */
.price-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-align: center;
  margin: 24px 0;
}

.price-number {
  font-size: 56px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 6px;
}

.price-label {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
}

/* FAQ */
.faq-list {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: var(--surface);
  color: var(--white);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 20px;
  text-align: left;
  cursor: pointer;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background 0.18s;
}
.faq-question:hover { background: var(--surface2); }

.faq-icon {
  font-size: 18px;
  color: var(--teal);
  flex-shrink: 0;
  transition: transform 0.22s;
  line-height: 1;
}

.faq-answer {
  display: none;
  background: var(--surface2);
  padding: 0 20px;
  border-top: 1px solid var(--border);
}
.faq-answer p {
  font-size: 15px;
  color: var(--light);
  line-height: 1.65;
  padding: 16px 0;
  margin: 0;
}

.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* BRIDGE SECTION */
.bridge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 28px;
  margin: 32px 0 0;
}

.bridge-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.bridge-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  line-height: 1.3;
}

.bridge-body {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 18px;
}

/* COMPARISON TABLE */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 24px 0;
}

.compare-col {
  background: var(--surface);
  padding: 22px 20px;
}
.compare-col:last-child { background: var(--surface2); }

.compare-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.compare-col:last-child .compare-label { color: var(--teal); }

.compare-item {
  font-size: 14px;
  color: var(--muted);
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
}
.compare-item:last-child { border-bottom: none; }
.compare-col:last-child .compare-item { color: var(--light); }

/* FINAL CTA */
.final-cta {
  background: var(--surface2);
  border-top: 1px solid var(--border);
  padding: 88px 0;
  text-align: center;
}

.final-cta h2 { margin-bottom: 10px; }

.final-cta .sub {
  font-size: 17px;
  color: var(--muted);
  margin-bottom: 32px;
  line-height: 1.6;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  text-align: center;
}

.footer-brand {
  font-size: 13px;
  color: var(--muted);
}

/* STICKY MOBILE CTA */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 12px 20px;
  background: rgba(10,10,10,0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
  text-align: center;
}

.sticky-cta a {
  display: block;
  background: var(--teal);
  color: #000;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: var(--radius);
  text-decoration: none;
}

/* RESPONSIVE */
@media (max-width: 640px) {
  .section { padding: 52px 0; }
  .final-cta { padding: 60px 0 88px; }
  .header-nav a:not(.nav-cta) { display: none; }
  .price-block { padding: 28px 20px; }
  .compare { grid-template-columns: 1fr; }
  .compare-col:last-child { border-top: 1px solid var(--border); }
  .sticky-cta { display: block; }
  .btn--lg { font-size: 15px; padding: 16px 28px; }
}