/* Nigeria International New Energy and Power Industry Expo - Custom Styles */
/* Enhanced Navigation with Submenus, Alignment, and Energy Effects */

/* Root Variables */
:root {
  --primary-orange: #E07600;
  --primary-green: #4EA91D;
  --accent-yellow: #CCC200;
  --gradient-green: linear-gradient(135deg, #4EA91D 0%, #CCC200 100%);
  --gradient-glow: linear-gradient(135deg, rgba(78, 169, 29, 0.8) 0%, rgba(204, 194, 0, 0.8) 100%);
  --dark-bg: #1a1a1a;
  --light-bg: #fffbf0;
  --text-dark: #1f2937;
  --text-light: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --transition-fast: 0.3s ease;
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Gradient Text Effect */
.gradient-text {
  background: var(--gradient-green);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* Glow Effect */
.glow-effect {
  box-shadow: 0 0 20px rgba(78, 169, 29, 0.4), 0 0 40px rgba(204, 194, 0, 0.2);
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(78, 169, 29, 0.4), 0 0 40px rgba(204, 194, 0, 0.2);
  }
  50% {
    box-shadow: 0 0 30px rgba(78, 169, 29, 0.6), 0 0 60px rgba(204, 194, 0, 0.4);
  }
}

/* Primary Button */
.btn-primary {
  background: var(--primary-orange);
  color: var(--text-light);
  padding: 12px 32px;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  background: #c66500;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Gradient Button */
.btn-gradient {
  background: var(--gradient-green);
  color: var(--text-light);
  padding: 12px 32px;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  filter: brightness(1.1);
}

/* Card Styles */
.card {
  background: var(--text-light);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-gradient {
  position: relative;
  background: var(--text-light);
  border-radius: 12px;
  padding: 24px;
  overflow: hidden;
}

.card-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-green);
}

/* Section Backgrounds */
.section-gradient {
  background: var(--gradient-glow);
  position: relative;
}

.section-dark {
  background: var(--dark-bg);
  color: var(--text-light);
}

/* Energy Icons Animation */
.energy-icon {
  transition: var(--transition-fast);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.energy-icon:hover {
  transform: scale(1.1) rotate(5deg);
  filter: drop-shadow(0 8px 16px rgba(78, 169, 29, 0.3));
}

/* Decorative Energy Icons */
.icon-decorator {
  position: absolute;
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
}

.icon-decorator.solar {
  top: 10%;
  right: 5%;
  width: 120px;
  height: 120px;
  animation: float-solar 6s ease-in-out infinite;
}

.icon-decorator.wind {
  bottom: 15%;
  left: 8%;
  width: 100px;
  height: 100px;
  animation: float-wind 8s ease-in-out infinite;
}

.icon-decorator.battery {
  top: 40%;
  right: 10%;
  width: 80px;
  height: 80px;
  animation: float-battery 7s ease-in-out infinite;
}

@keyframes float-solar {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

@keyframes float-wind {
  0%, 100% {
    transform: translateX(0) rotate(0deg);
  }
  50% {
    transform: translateX(15px) rotate(-5deg);
  }
}

@keyframes float-battery {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-15px) scale(1.05);
  }
}

/* Page Header Common Style */
.page-header {
  padding: 120px 0 60px;
  background: var(--gradient-glow);
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, transparent, white);
}

/* =========================================
   ENHANCED NAVIGATION STYLES
   ========================================= */

/* Navigation Container */
nav {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

/* Glass Nav Effect */
.glass-nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(78, 169, 29, 0.1);
}

/* Logo Glow Animation */
@keyframes logo-glow {
  0%, 100% {
    box-shadow: 0 0 15px rgba(78, 169, 29, 0.3);
  }
  50% {
    box-shadow: 0 0 25px rgba(78, 169, 29, 0.6);
  }
}

.logo-glow {
  animation: logo-glow 3s infinite;
}

/* Navigation Links Container */
nav > div > div {
  height: 100%;
}

/* Main Navigation Links */
.nav-link {
  position: relative;
  height: 100%;
  display: inline-flex;
  align-items: center;
  padding: 0 20px;
  font-weight: 500;
  color: #374151;
  transition: color 0.3s ease;
  text-decoration: none;
}

/* Hover Effect for Links */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-green);
  transition: width 0.3s ease, left 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--primary-orange);
}

.nav-link:hover::after {
  width: 80%;
  left: 50%;
}

/* Active State */
.nav-link.active {
  color: var(--primary-orange);
  font-weight: 600;
}

.nav-link.active::after {
  width: 100%;
  left: 50%;
}

/* =========================================
   DROPDOWN / SUBMENU STYLES
   ========================================= */

/* Submenu Arrow Rotation */
.arrow-icon {
  transition: transform 0.3s ease;
}

.group:hover .arrow-icon {
  transform: rotate(180deg);
}

/* Submenu Container */
.group > div {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
  border-top: 3px solid var(--primary-orange);
  overflow: hidden;
}

/* Show Submenu on Hover */
.group:hover > div {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Submenu Links */
.group > div a {
  display: block;
  padding: 12px 24px;
  color: #4b5563;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  position: relative;
  border-left: 3px solid transparent;
}

.group > div a:hover {
  background-color: #f9fafb;
  color: var(--primary-orange);
  padding-left: 32px;
  border-left-color: var(--primary-green);
}

/* Mobile Menu Adjustments */
#mobile-menu {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

#mobile-menu a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid #f3f4f6;
}

#mobile-menu a:hover {
  color: var(--primary-orange);
  padding-left: 8px;
}

/* =========================================
   END NAVIGATION STYLES
   ========================================= */

/* Countdown Timer Styles */
.countdown-box {
  background: var(--text-light);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-md);
  min-width: 100px;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-orange);
  line-height: 1;
  text-shadow: 0 2px 4px rgba(224, 118, 0, 0.1);
}

.countdown-label {
  font-size: 14px;
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 8px;
}

/* Stats Counter */
.stat-card {
  text-align: center;
  padding: 32px;
  background: var(--text-light);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

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

.stat-number {
  font-size: 48px;
  font-weight: 700;
  background: var(--gradient-green);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Brand Logo Grid */
.brand-logo {
  width: 100%;
  height: auto;
  max-height: 80px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: var(--transition-fast);
}

.brand-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* Timeline Styles */
.timeline-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  width: 2px;
  height: calc(100% - 16px);
  background: var(--gradient-green);
}

.timeline-dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary-orange);
  box-shadow: 0 0 0 4px rgba(224, 118, 0, 0.2);
}

/* Parallax Effect */
.parallax-bg {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Feature Box */
.feature-box {
  position: relative;
  padding: 32px;
  background: white;
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  overflow: hidden;
}

.feature-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--gradient-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
}

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

.feature-box:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

/* Icon Circle */
.icon-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-green);
  margin: 0 auto 20px;
  box-shadow: var(--shadow-md);
  transition: var(--transition-fast);
}

.icon-circle:hover {
  transform: scale(1.1) rotate(360deg);
}

/* Conference Schedule Table */
.schedule-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 8px;
}

.schedule-table th {
  background: var(--gradient-green);
  color: white;
  padding: 16px;
  text-align: left;
  font-weight: 600;
}

.schedule-table td {
  background: white;
  padding: 16px;
  border-bottom: 1px solid #e5e7eb;
}

.schedule-table tr:hover td {
  background: #f9fafb;
}

/* Speaker Card */
.speaker-card {
  text-align: center;
  padding: 24px;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.speaker-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.speaker-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 4px solid var(--primary-green);
  overflow: hidden;
}

/* Media Gallery */
.media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.media-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.media-item:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.media-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* Booth Map */
.booth-map {
  position: relative;
  background: #f9fafb;
  border-radius: 12px;
  padding: 40px;
  min-height: 500px;
}

/* Download Button */
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-green);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.btn-download:hover {
  background: #3d8a16;
  transform: translateY(-2px);
}

/* Registration Form */
.registration-form input,
.registration-form select,
.registration-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 16px;
  transition: var(--transition-fast);
}

.registration-form input:focus,
.registration-form select:focus,
.registration-form textarea:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(78, 169, 29, 0.1);
}

/* Map Container */
.map-container {
  width: 100%;
  height: 400px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  color: #6b7280;
  font-size: 14px;
}

.breadcrumb a {
  color: var(--primary-green);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Animation Classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate-fade-in {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Spinner */
.spinner {
  border: 3px solid #f3f4f6;
  border-top: 3px solid var(--primary-green);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Accordion Styles */
.accordion-item {
  transition: var(--transition-smooth);
}

.accordion-header {
  cursor: pointer;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-item.active .accordion-header svg {
  transform: rotate(180deg);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .countdown-number {
    font-size: 36px;
  }
  
  .stat-number {
    font-size: 36px;
  }
  
  .countdown-box {
    padding: 16px;
    min-width: 80px;
  }

  .page-header {
    padding: 100px 0 40px;
  }

  .icon-decorator {
    display: none;
  }

  .schedule-table {
    font-size: 14px;
  }

  .schedule-table th,
  .schedule-table td {
    padding: 12px 8px;
  }
  
  .nav-link {
    padding: 0 12px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print Styles */
@media print {
  .glow-effect,
  .btn-primary,
  .btn-gradient {
    box-shadow: none;
  }
  
  nav,
  .icon-decorator {
    display: none;
  }
}