/* ============================================
   LESSONLOOP DESIGN SYSTEM UPGRADE
   Shared across all 73 marketing pages
   ============================================ */

/* --- Ambient Gradient Backgrounds --- */
.section-ambient {
  position: relative;
  overflow: hidden;
}

/* Light section — teal top-right, coral bottom-left */
.section-ambient-light::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, hsl(var(--teal) / 0.06) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.section-ambient-light::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, hsl(var(--coral) / 0.04) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

/* Light section — reversed: coral top-left, teal bottom-right */
.section-ambient-light-alt::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, hsl(var(--coral) / 0.05) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.section-ambient-light-alt::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, hsl(var(--teal) / 0.05) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

/* Dark section ambient (for ink backgrounds) */
.section-ambient-dark::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, hsl(var(--teal) / 0.12) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.section-ambient-dark::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, hsl(var(--coral) / 0.08) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

/* Ensure content sits above ambient effects */
.section-ambient > .container,
.section-ambient > div:not([class*="absolute"]) {
  position: relative;
  z-index: 1;
}

/* --- Section Transitions --- */
.section-fade-to-light::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, hsl(var(--background)));
  pointer-events: none;
  z-index: 2;
}
.section-fade-to-muted::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, hsl(var(--muted) / 0.3));
  pointer-events: none;
  z-index: 2;
}
.section-fade-to-ink::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, hsl(var(--ink)));
  pointer-events: none;
  z-index: 2;
}
.section-fade-from-ink::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, transparent, hsl(var(--ink)));
  pointer-events: none;
  z-index: 2;
}

/* --- Dot Grid Texture --- */
.section-texture {
  position: relative;
}
.section-texture::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.02;
  background-image: radial-gradient(circle at 1px 1px, currentcolor 1px, transparent 0px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* --- Glassmorphic Feature Cards --- */
.glass-card {
  background: hsl(var(--background) / 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid hsl(var(--border) / 0.5);
  border-radius: 1rem;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.04),
    0 4px 12px rgba(0,0,0,0.03),
    inset 0 1px 0 rgba(255,255,255,0.6);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-card:hover {
  border-color: hsl(var(--teal) / 0.3);
  box-shadow:
    0 4px 20px rgba(0,0,0,0.06),
    0 0 40px -12px hsl(var(--teal) / 0.15),
    inset 0 1px 0 rgba(255,255,255,0.6);
  transform: translateY(-4px);
}
/* Alternating coral glow on even cards */
.glass-card-coral:hover,
.glass-card:nth-child(even):hover {
  border-color: hsl(var(--coral) / 0.3);
  box-shadow:
    0 4px 20px rgba(0,0,0,0.06),
    0 0 40px -12px hsl(var(--coral) / 0.15),
    inset 0 1px 0 rgba(255,255,255,0.6);
}

/* --- Icon Container Gradients --- */
.icon-gradient-teal {
  background: linear-gradient(135deg, hsl(var(--teal)) 0%, hsl(var(--teal-dark)) 100%);
  box-shadow: 0 4px 12px hsl(var(--teal) / 0.25);
}
.icon-gradient-coral {
  background: linear-gradient(135deg, hsl(var(--coral)) 0%, hsl(var(--coral-dark)) 100%);
  box-shadow: 0 4px 12px hsl(var(--coral) / 0.25);
}

/* --- Gradient Text --- */
.text-gradient-teal {
  background: linear-gradient(135deg, hsl(var(--teal-light)), hsl(var(--teal)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-warm {
  background: linear-gradient(135deg, hsl(var(--teal-light)), hsl(var(--coral)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Stagger Delays (CSS fallback if GSAP fails) --- */
.stagger-1 { transition-delay: 0ms; }
.stagger-2 { transition-delay: 80ms; }
.stagger-3 { transition-delay: 160ms; }
.stagger-4 { transition-delay: 240ms; }
.stagger-5 { transition-delay: 320ms; }
.stagger-6 { transition-delay: 400ms; }
.stagger-7 { transition-delay: 480ms; }
.stagger-8 { transition-delay: 560ms; }
.stagger-9 { transition-delay: 640ms; }

/* --- Enhanced Scroll Animations --- */
.reveal-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.96) translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* --- Floating Decorative Elements --- */
@keyframes float-gentle {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
@keyframes float-medium {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(2deg); }
}
.float-gentle { animation: float-gentle 6s ease-in-out infinite; }
.float-medium { animation: float-medium 4s ease-in-out infinite; }

/* --- FAQ Accordion Smooth Animation --- */
.faq-answer-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-answer-wrap.is-open {
  grid-template-rows: 1fr;
}
.faq-answer-wrap > div {
  overflow: hidden;
}

/* --- Browser Frame for Mockups (light mode version) --- */
.browser-frame {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid hsl(var(--border) / 0.5);
  background: hsl(var(--card));
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15);
}
.browser-frame-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: hsl(var(--muted) / 0.5);
  border-bottom: 1px solid hsl(var(--border) / 0.5);
}
.browser-dots {
  display: flex;
  gap: 6px;
}
.browser-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.browser-dots span:nth-child(1) { background: hsl(var(--destructive) / 0.6); }
.browser-dots span:nth-child(2) { background: hsl(var(--warning) / 0.6); }
.browser-dots span:nth-child(3) { background: hsl(var(--success) / 0.6); }
.browser-url {
  flex: 1;
  display: flex;
  justify-content: center;
}
.browser-url span {
  background: hsl(var(--muted));
  border-radius: 0.5rem;
  padding: 0.25rem 1rem;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  font-family: ui-monospace, monospace;
}

/* --- Mobile: disable heavy effects --- */
@media (max-width: 768px) {
  .float-gentle, .float-medium { animation: none; }
  .section-ambient-light::before,
  .section-ambient-light::after,
  .section-ambient-light-alt::before,
  .section-ambient-light-alt::after {
    width: 300px;
    height: 300px;
  }
  .glass-card:hover {
    transform: none;
  }
}