/* =============================================================
   Seytrons landing — light theme, uniform with the main site
   -------------------------------------------------------------
   This stylesheet only styles Seytrons-specific components.
   The header, footer, navigation, buttons, cards, sections,
   and process steps all come from the shared css/style.css and
   use the same design tokens (CSS variables) so the page reads
   as part of the AlpherTech website.
   ============================================================= */

/* ---------- Screen-reader only ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------- Hero (product hero: text + phone mock) ---------- */
.seytrons-hero {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  overflow: hidden;
}

.seytrons-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.seytrons-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--blue-100);
  border: 1px solid rgba(37, 99, 235, 0.18);
  color: var(--primary-700);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
}

.seytrons-hero-title {
  font-size: var(--text-5xl);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.seytrons-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 56ch;
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.seytrons-hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Benefit chips */
.seytrons-benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: 2.5rem;
}

.seytrons-benefit {
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.seytrons-benefit-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
}

.seytrons-benefit-title {
  margin: 0 0 0.25rem;
  font-size: var(--text-base);
  color: var(--text-primary);
}

.seytrons-benefit-text {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ---------- Phone mock (product visual) ---------- */
.seytrons-phone-wrap {
  display: flex;
  justify-content: flex-end;
}

.seytrons-phone {
  width: 330px;
  max-width: 100%;
  border-radius: 28px;
  background: linear-gradient(180deg, #0f172a, #1e293b);
  padding: 0.9rem;
  box-shadow: var(--shadow-xl);
}

.seytrons-phone-screen {
  border-radius: 22px;
  background: linear-gradient(180deg, #0b1220, #111827);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.1rem;
  position: relative;
  overflow: hidden;
  color: #e5e7eb;
}

.seytrons-phone-screen:before {
  content: "";
  position: absolute;
  inset: -60px;
  background:
    radial-gradient(circle at 30% 20%, rgba(14, 165, 233, 0.25), transparent 55%),
    radial-gradient(circle at 70% 10%, rgba(37, 99, 235, 0.25), transparent 50%);
  pointer-events: none;
}

.seytrons-statusbar {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #cbd5e1;
  font-weight: 700;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.seytrons-app-title {
  position: relative;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.4rem;
  margin: 0.7rem 0 1rem;
}

.seytrons-meter {
  position: relative;
  margin-top: 1rem;
}

.seytrons-meter-label {
  color: #9ca3af;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.seytrons-meter-bar {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  overflow: hidden;
}

.seytrons-meter-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--secondary));
}

.seytrons-feature-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 0.55rem 0.7rem;
  margin-top: 0.6rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.seytrons-mini-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 1.1rem;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.18), rgba(59, 130, 246, 0.18));
  border: 1px solid rgba(14, 165, 233, 0.35);
  color: #e0f2fe;
}

/* ---------- Compliance tabs ---------- */
.st-compliance-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

.st-tab {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.st-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.st-tab.is-active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.3);
}

.st-compliance-panels {
  margin-top: var(--space-xl);
}

.st-tab-panel {
  display: none;
}

.st-tab-panel.is-active {
  display: block;
}

/* ---------- Panels & lists ---------- */
.st-panel {
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.st-panel-title {
  margin: 0 0 var(--space-lg);
  font-size: var(--text-xl);
  color: var(--text-primary);
}

.st-panel-note {
  margin: var(--space-lg) 0 0;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.st-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.st-mini-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: var(--space-md);
}

.st-mini-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.75rem 0.9rem;
  color: var(--text-primary);
  font-size: var(--text-sm);
}

.st-mini-item i {
  color: var(--primary);
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.st-bullet {
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
}

.st-bullet-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
}

.st-bullet-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.st-bullet-text {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .seytrons-hero {
    padding-top: 2rem;
    padding-bottom: 2rem;
  }

  .seytrons-hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .seytrons-hero-title {
    font-size: var(--text-3xl);
  }

  .seytrons-phone-wrap {
    justify-content: flex-start;
  }

  .seytrons-benefits {
    grid-template-columns: 1fr;
  }

  .st-grid-2 {
    grid-template-columns: 1fr;
  }

  .st-panel {
    padding: var(--space-xl);
  }
}