/* ============================================
   HHpoker Club - Landing Page Styles
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #3B82F6;
  --primary-50: #EFF6FF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Smooth Scroll ---------- */
html {
  scroll-behavior: smooth;
}

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

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* ---------- Keyframe Animations ---------- */

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Float (gentle up-down) */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* Scale In */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Slide In From Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide In From Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Pulse Glow */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
  }
}

/* Bounce In */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

/* Spin (for loading) */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Utility Animation Classes ---------- */
.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-scaleIn {
  animation: scaleIn 0.5s ease forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.6s ease forwards;
}

.animate-slideInRight {
  animation: slideInRight 0.6s ease forwards;
}

.animate-bounceIn {
  animation: bounceIn 0.7s ease forwards;
}

.animate-pulseGlow {
  animation: pulseGlow 2s ease infinite;
}

/* Animation Delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }

/* Hidden until animated (for scroll-triggered animations) */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Navbar ---------- */
#navbar {
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base),
              padding var(--transition-base);
  will-change: background-color, box-shadow;
}

#navbar.navbar-scrolled {
  background-color: rgba(255, 255, 255, 0.97) !important;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

/* Navbar link underline effect */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-base), left var(--transition-base);
}

.nav-link:hover::after {
  width: 100%;
  left: 0;
}

/* Mobile Menu */
#mobile-menu {
  transition: max-height var(--transition-slow), opacity var(--transition-base);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}

#mobile-menu.open {
  max-height: 500px;
  opacity: 1;
}

/* ---------- Hero Section ---------- */
.hero-gradient {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 25%, #1E40AF 50%, #1E3A8A 100%);
}

.hero-pattern {
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.06) 0%, transparent 50%);
}

.hero-image {
  animation: float 4s ease-in-out infinite;
}

/* ---------- Gradient Buttons ---------- */
.btn-primary-gradient {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn-primary-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(37, 99, 235, 0.5);
}

.btn-primary-gradient:hover::before {
  left: 100%;
}

.btn-outline-gradient {
  background: transparent;
  color: #FFFFFF;
  border: 2px solid rgba(255, 255, 255, 0.8);
  padding: 0.75rem 2rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-outline-gradient:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.btn-white-gradient {
  background: #FFFFFF;
  color: var(--primary);
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-white-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ---------- Feature Cards ---------- */
.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-50) 0%, #DBEAFE 100%);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  transform: scale(1.1);
}

/* ---------- Stats Section ---------- */
.stats-section {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
}

.stat-item {
  text-align: center;
  padding: 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: rgba(255, 255, 255, 0.25);
  align-self: center;
}

/* ---------- Testimonials ---------- */
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
  transition: all var(--transition-base);
  position: relative;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.testimonial-card .quote-icon {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 3rem;
  color: var(--primary-50);
  line-height: 1;
}

.testimonial-stars {
  color: #F59E0B;
  letter-spacing: 2px;
}

/* ---------- FAQ Accordion ---------- */
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: var(--white);
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-base);
  gap: 1rem;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  font-size: 1rem;
  color: var(--gray-400);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-item.active .faq-question {
  color: var(--primary);
  background: var(--primary-50);
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 1.5rem 1.25rem;
  color: var(--gray-600);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 50%, #1D4ED8 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
}

.footer a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--white);
}

.footer-heading {
  color: var(--white);
  font-weight: 700;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer-divider {
  border-color: var(--gray-700);
}

/* ---------- Back to Top Button ---------- */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 50;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ---------- Preloader (optional) ---------- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---------- Responsive Adjustments ---------- */
@media (max-width: 768px) {
  .stat-number {
    font-size: 2.25rem;
  }

  .stat-divider {
    width: 80%;
    height: 1px;
    margin: 1rem auto;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .hero-image {
    max-width: 280px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .btn-primary-gradient,
  .btn-outline-gradient,
  .btn-white-gradient {
    width: 100%;
    justify-content: center;
  }
}

/* ---------- Focus Styles for Accessibility ---------- */
*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ---------- Selection Style ---------- */
::selection {
  background: var(--primary);
  color: #FFFFFF;
}