/*
 * Riyadah AI Landing Page — Light Mode Enterprise Refactor
 * --------------------------------------------------
 */

/* ========================================
   AI PAGE – HERO SECTION (Overrides for standard hero)
   ======================================== */

.ai-hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-teal-accent);
  border: 1px solid rgba(27, 166, 166, 0.3);
  padding: 6px 20px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.1);
}

.ai-hero-label-dark {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary-blue);
  border: 1px solid rgba(11, 79, 108, 0.2);
  padding: 6px 20px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
  background: rgba(11, 79, 108, 0.05);
}

.ai-hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.ai-hero-subtitle {
  font-size: clamp(1rem, 1.3vw, 1.25rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  max-width: 640px;
  margin: 0 auto var(--space-xl);
}

.ai-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ========================================
   AI BUTTONS – GHOST / GLOW VARIANTS
   ======================================== */

.button-ai-primary {
  background: linear-gradient(135deg, #1ba6a6 0%, #15918f 100%);
  color: #ffffff !important;
  border: none;
  box-shadow: 0 0 24px rgba(27, 166, 166, 0.25);
  display: inline-block;
  text-align: center;
  border-radius: var(--radius-md);
}

.button-ai-primary:hover {
  background: linear-gradient(135deg, #20bcbc 0%, #1ba6a6 100%);
  box-shadow: 0 0 36px rgba(27, 166, 166, 0.4);
  transform: translateY(-2px);
}

.button-ai-ghost {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-md);
  display: inline-block;
  text-align: center;
}

.button-ai-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
}

.button-ai-ghost-dark {
  background: transparent;
  color: var(--color-primary-blue);
  border: 1px solid rgba(11, 79, 108, 0.3);
  border-radius: var(--radius-md);
  display: inline-block;
  text-align: center;
}

.button-ai-ghost-dark:hover {
  background: rgba(11, 79, 108, 0.05);
  border-color: var(--color-primary-blue);
  color: var(--color-primary-blue);
  transform: translateY(-2px);
}

/* ========================================
   AI SECTION WRAPPER
   ======================================== */

.ai-section {
  position: relative;
  padding: var(--section-padding-desktop) 0;
  background-color: var(--color-white);
}

.ai-section--alt {
  background-color: var(--color-background);
}

/* Subtle top-border between light sections */
.ai-section + .ai-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(11, 79, 108, 0.1) 50%,
    transparent 100%
  );
}

/* ========================================
   AI INDUSTRY TABS (Light Mode)
   ======================================== */

.ai-industry-tab.active {
  background: var(--color-white) !important;
  border-color: var(--color-teal-accent) !important;
  box-shadow: var(--shadow-md) !important;
  transform: translateY(-2px);
}

.ai-industry-tabs-grid {
  grid-template-columns: 1fr 2fr;
}

/* ========================================
   SLOW FADE-IN ANIMATION SYSTEM
   ======================================== */

/* Invisible by default; JS adds .ai-visible to trigger */
.ai-fade-in {
  opacity: 0;
  transform: translateY(32px);
  will-change: opacity, transform;
  transition: opacity 1.2s cubic-bezier(0.22, 1, 0.36, 1),
              transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.ai-fade-in.ai-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Slower variant for hero elements */
.ai-fade-in-slow {
  opacity: 0;
  transform: translateY(20px);
  will-change: opacity, transform;
  transition: opacity 1.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 1.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.ai-fade-in-slow.ai-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.ai-delay-1 { transition-delay: 0.15s; }
.ai-delay-2 { transition-delay: 0.3s;  }
.ai-delay-3 { transition-delay: 0.5s;  }
.ai-delay-4 { transition-delay: 0.7s;  }
.ai-delay-5 { transition-delay: 0.9s;  }

/* ========================================
   RESPONSIVE – AI PAGE
   ======================================== */

@media (max-width: 992px) {
  .ai-section .grid-3, .ai-section .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .ai-industry-tabs-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .ai-section .grid-2, .ai-section .grid-3, .ai-section .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .ai-hero-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .ai-hero-actions .button {
    width: 100%;
    max-width: 320px;
  }
}

/* Respect reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .ai-fade-in,
  .ai-fade-in-slow {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}