/* =============================================
   PREMIUM UI/UX ENHANCEMENTS (FASE 3)
   ============================================= */

/* Glassmorphism Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.7) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03) !important;
  transition: all 0.3s ease;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: var(--shadow-sm) !important;
}

/* Premium Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%) !important;
  box-shadow: 0 8px 24px -8px var(--color-primary) !important;
  position: relative;
  overflow: hidden;
  border: none !important;
  z-index: 1;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  z-index: -1;
  transition: opacity 0.4s ease;
  opacity: 0;
}
.btn-primary:hover::before {
  opacity: 1;
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02) !important;
  box-shadow: 0 12px 28px -8px var(--color-primary) !important;
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%) !important;
  box-shadow: 0 8px 24px -8px var(--color-accent) !important;
  position: relative;
  overflow: hidden;
  border: none !important;
  z-index: 1;
}
.btn-accent::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%);
  z-index: -1;
  transition: opacity 0.4s ease;
  opacity: 0;
}
.btn-accent:hover::before { opacity: 1; }
.btn-accent:hover {
  transform: translateY(-3px) scale(1.02) !important;
  box-shadow: 0 12px 28px -8px var(--color-accent) !important;
}

/* Hero Section Enhancements */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%) !important;
  padding: 120px 5% 150px !important;
}
.hero-section::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-badge {
  background: rgba(255, 255, 255, 0.1) !important;
  backdrop-filter: blur(10px) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}

/* Card Micro-Animations (Program Grid) */
.program-card {
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.08) !important;
  border-radius: 24px !important;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
}
.program-card:hover {
  transform: translateY(-12px) !important;
  box-shadow: 0 20px 40px -15px rgba(0,0,0,0.15) !important;
}
.program-card-img {
  transition: transform 0.6s ease;
}
.program-card:hover .program-card-img {
  transform: scale(1.08);
}
.program-card-img-wrapper {
  overflow: hidden;
  height: 220px;
}

/* Glassmorphism Stats Strip */
.stats-strip {
  background: rgba(255, 255, 255, 0.9) !important;
  backdrop-filter: blur(15px) !important;
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 24px !important;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.08) !important;
  padding: 40px !important;
  margin-top: -70px !important;
}
.stat-item {
  border-right: 1px solid rgba(0,0,0,0.06) !important;
  transition: transform 0.3s ease;
}
.stat-item:hover {
  transform: scale(1.05);
}

/* Checkout / Nominal Cards */
.nominal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.nominal-card {
  position: relative;
  border: 2px solid var(--color-border);
  border-radius: 16px;
  padding: 20px 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: #fff;
  overflow: hidden;
}
.nominal-card input[type="radio"] {
  position: absolute;
  opacity: 0;
}
.nominal-card:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-light);
}
.nominal-card.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 8px 20px -8px var(--color-primary);
}
.nominal-card.selected::after {
  content: '\f058'; /* FontAwesome check-circle */
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  top: 8px; right: 8px;
  color: var(--color-primary);
  font-size: 1.1rem;
}
.nominal-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  font-family: var(--font-family-heading);
}

/* Checkbox Modern */
.modern-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}
.modern-checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
  margin-top: 3px;
  cursor: pointer;
}

/* Detail Program Sticky Box */
.sticky-donation-box {
  position: sticky;
  top: 100px;
  background: #fff;
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 15px 40px -10px rgba(0,0,0,0.1);
  border: 1px solid rgba(0,0,0,0.04);
}

/* Feature Boxes */
.feature-box {
  text-align: center; 
  padding: 40px 24px; 
  border-radius: 24px; 
  background: #fff;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
  border: 1px solid rgba(0,0,0,0.03);
}
.feature-box:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.1);
}
.feature-icon-wrapper {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2rem;
  color: #fff;
  box-shadow: 0 10px 20px -5px currentColor;
  transition: transform 0.4s ease;
}
.feature-box:hover .feature-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

/* Progress bar animation */
@keyframes slideProgress {
  from { width: 0; }
}
.progress-bar {
  animation: slideProgress 1.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* Form controls focus animation */
.form-control {
  transition: all 0.3s ease !important;
}
.form-control:focus {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -10px rgba(26,111,168,0.3) !important;
}

/* Footer modern touches */
.site-footer {
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-success));
}