/* ===================================================
   AI STORE PREMIUM - DESIGN SYSTEM & STYLES
   Dark Glassmorphism & High-Conversion E-commerce Theme
   =================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Background Ambient Glows */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.22;
  will-change: transform;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
  top: -100px;
  left: 10%;
  animation: floatOrb 22s ease-in-out infinite alternate;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
  top: 40%;
  right: -150px;
  animation: floatOrb 28s ease-in-out infinite alternate-reverse;
}

.glow-3 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
  bottom: -100px;
  left: 25%;
  animation: floatOrb 25s ease-in-out infinite alternate;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* Glassmorphic Container */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
}

.glass-panel-interactive {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-panel-interactive:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 25px -5px rgba(99, 102, 241, 0.2);
}

/* Badge Styles */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-popular {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(239, 68, 68, 0.2));
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-trust {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Gradient Text */
.gradient-text-hero {
  background: linear-gradient(135deg, #ffffff 20%, #cbd5e1 50%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-accent {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Floating Contact Widget */
.floating-contact-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.floating-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  transition: all 0.25s ease;
  position: relative;
  text-decoration: none;
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-btn-zalo {
  background: #0068ff;
  color: white;
}

.floating-btn-telegram {
  background: #229ed9;
  color: white;
}

.floating-btn-phone {
  background: #10b981;
  color: white;
}

.pulse-ring {
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 50%;
  border: 2px solid currentColor;
  animation: pulseEffect 2s cubic-bezier(0.24, 0, 0.38, 1) infinite;
  opacity: 0;
  pointer-events: none;
}

@keyframes pulseEffect {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Modal Styling */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.25rem;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.96);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.modal-overlay.active .modal-container {
  transform: translateY(0) scale(1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #090d16;
}

::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* FAQ Accordion Transitions */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), opacity 0.3s ease;
  opacity: 0;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  opacity: 1;
  transition: max-height 0.4s ease-in-out, opacity 0.3s ease;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
}

/* Shine effect on primary buttons */
.btn-shine {
  position: relative;
  overflow: hidden;
}

.btn-shine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 20%;
  height: 200%;
  background: linear-gradient(
    60deg,
    rgba(255, 255, 255, 0) 20%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(255, 255, 255, 0) 80%
  );
  transform: rotate(30deg);
  animation: shine 4s infinite ease-in-out;
}

@keyframes shine {
  0% { left: -60%; }
  25% { left: 140%; }
  100% { left: 140%; }
}