/* =====================
   HERO (physics)
   ===================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 9rem 2.5rem 4rem;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,111,255,0.1) 0%, rgba(74,240,196,0.05) 40%, transparent 70%);
  top: 40%; left: 50%;
  transform: translate(-40%, -55%);
  pointer-events: none;
  animation: physPulse 8s ease-in-out infinite;
}

@keyframes physPulse {
  0%, 100% { transform: translate(-40%, -55%) scale(1); opacity: 1; }
  50%       { transform: translate(-40%, -55%) scale(1.08); opacity: 0.7; }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1100px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}

.hero-title {
  font-family: var(--title);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}

.hero-title .accent  { color: var(--accent); }
.hero-title .accent2 { color: var(--accent2); }

.hero-sub {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 2;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero-badges {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.7s forwards;
}

.badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
  border: 1px solid;
}
.badge-free {
  color: var(--accent);
  border-color: rgba(74,240,196,0.3);
  background: rgba(74,240,196,0.06);
}
.badge-android {
  color: var(--muted);
  border-color: var(--border);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

.hero-image-wrap {
  opacity: 0;
  animation: fadeUp 0.8s 0.5s forwards;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrap img {
  width: 100%;
  max-width: 520px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 0 60px rgba(123,111,255,0.15), 0 0 120px rgba(74,240,196,0.05);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =====================
   SECTIONS SHARED
   ===================== */
section {
  position: relative;
  z-index: 1;
}

.section-inner {
  padding: 7rem 2.5rem;
  border-top: 1px solid var(--border);
}

.section-title {
  font-family: var(--title);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.section-desc {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 2;
  max-width: 560px;
  margin-bottom: 3rem;
}

/* =====================
   UNITS
   ===================== */
.units-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  max-width: 1000px;
}

.unit-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.4rem 1.5rem;
  transition: border-color 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}
.unit-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent), var(--accent2));
  opacity: 0;
  transition: opacity 0.25s;
}
.unit-card:hover { border-color: rgba(74,240,196,0.25); transform: translateY(-3px); }
.unit-card:hover::before { opacity: 1; }

.unit-num {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.unit-name {
  font-family: var(--title);
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}
.unit-topics {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.8;
}

/* =====================
   FEATURES
   ===================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
  max-width: 1000px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  transition: border-color 0.25s;
}
.feature-card:hover { border-color: rgba(74,240,196,0.2); }

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}
.feature-name {
  font-family: var(--title);
  font-size: 0.95rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.9;
}

/* =====================
   AI
   ===================== */
.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  max-width: 1000px;
}

.ai-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ai-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s;
}
.ai-card:hover { border-color: rgba(123,111,255,0.3); }
.ai-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent2), var(--accent));
}

.ai-card-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
  margin-bottom: 0.8rem;
}
.ai-card h4 {
  font-family: var(--title);
  font-size: 1.05rem;
  margin-bottom: 0.7rem;
  letter-spacing: -0.01em;
}
.ai-card p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.9;
}

.ai-ticket-note {
  margin-top: 0.8rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.ai-ticket-note.paid { color: var(--accent3); }

.ai-note-box {
  margin-top: 2rem;
  background: rgba(240,162,74,0.05);
  border: 1px solid rgba(240,162,74,0.15);
  border-radius: 8px;
  padding: 1.2rem 1.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.9;
}
.ai-note-box strong {
  color: var(--accent3);
  font-weight: 400;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 0.5rem;
}

.ai-ticket-box {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.ai-ticket-box-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
  margin-bottom: 1rem;
}
.ai-ticket-box p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 2;
}
.accent-text { color: var(--accent); }

/* =====================
   FAQ
   ===================== */
.faq-list {
  max-width: 700px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 400;
  padding: 1.4rem 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: color 0.2s;
}
.faq-q:hover { color: var(--accent); }
.faq-icon {
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  font-size: 0.87rem;
  color: var(--muted);
  line-height: 2;
  padding: 0 0 1.4rem;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* =====================
   CTA
   ===================== */
.cta-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

/* =====================
   FOOTER (physics override)
   ===================== */
footer {
  position: relative;
  z-index: 1;
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-image-wrap { order: -1; }
  .ai-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .section-inner { padding: 5rem 1.2rem; }
  #hero { padding: 8rem 1.2rem 3rem; }
}

@media (max-width: 480px) {
  .units-grid { grid-template-columns: 1fr 1fr; }
}