/* ================================================
   SOLAR & STORAGE EXPO - COMPLETE STYLESHEET
   ================================================ */

/* CSS Variables */
:root {
  --solar-green: #22C55E;
  --solar-green-dark: #16A34A;
  --solar-green-light: #4ADE80;
  --solar-yellow: #F59E0B;
  --solar-orange: #F97316;
  --dark-bg: #0F172A;
  --dark-surface: #1E293B;
  --light-bg: #F8FAFC;
  --white: #FFFFFF;
  --text-dark: #1E293B;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-lg: 16px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Section Styles */
.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 50px;
  color: var(--text-dark);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--solar-green), var(--solar-yellow));
  margin: 15px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 1.1rem;
}

/* ================================================
   NAVIGATION
   ================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  padding: 15px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-img {
  height: 50px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  padding: 8px 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--solar-green);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--solar-green);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ================================================
   BUTTONS
   ================================================ */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--solar-green), var(--solar-green-dark));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.5);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--solar-yellow), var(--solar-orange));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

.btn-outline {
  background: transparent;
  border-color: var(--solar-green);
  color: var(--solar-green);
}

.btn-outline:hover {
  background: var(--solar-green);
  color: var(--white);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

.btn-full {
  width: 100%;
}

/* ================================================
   HERO SECTION
   ================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  padding: 120px 20px 80px;
  color: var(--white);
}

.hero-slider {
  position: relative;
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-content,
.hero-slider-controls {
  position: relative;
  z-index: 2;
}

.hero-slider-controls {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
}

.slider-dots {
  display: flex;
  gap: 10px;
}

.slider-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease;
}

.slider-dots .dot.active {
  background: var(--solar-green);
  transform: scale(1.1);
}

.hero-content {
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #8f8f8f;
  padding: 16px 28px;
  border-radius: 18px;
  margin-bottom: 30px;
  border: 2px solid #cfcfcf;
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.35);
}

.hero-logo {
  height: 85px;
  width: auto;
}

.hero-badge span {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 10px;
  opacity: 0.9;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 30px;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero-title-white {
  color: var(--solar-green-dark);
  display: block;
}

.hero-title-green {
  color: var(--solar-yellow);
  display: block;
}

.hero-title-white,
.hero-title-green {
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.45);
}

.hero-date-label {
  font-size: 1.3rem;
  margin-bottom: 20px;
  opacity: 0.9;
  color: var(--white);
  font-weight: 500;
}

.hero-info-bar {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(10px);
  padding: 12px 20px;
  border-radius: 8px;
  color: var(--white);
}

.hero-icon {
  font-size: 1.3rem;
  display: inline-block;
  line-height: 1;
}

.hero-info-text {
  font-size: 1.1rem;
  font-weight: 500;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Page Hero (Inner Pages) */
.page-hero {
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  padding: 150px 20px 80px;
  color: var(--white);
}

.page-hero h1 {
  font-size: 3rem;
  max-width: 800px;
  margin-bottom: 20px;
}

.page-hero p {
  font-size: 1.2rem;
  max-width: 600px;
  opacity: 0.9;
}

/* ================================================
   ABOUT SECTION
   ================================================ */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.about-links {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 30px;
}

.link-arrow {
  color: var(--solar-green);
  font-weight: 600;
  font-size: 1.1rem;
}

.link-arrow:hover {
  color: var(--solar-green-dark);
}

/* ================================================
   EXHIBITORS SECTION
   ================================================ */
.exhibitors-section {
  background: var(--light-bg);
}

.exhibitors-notice {
  text-align: center;
  padding: 60px 40px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  margin: 0 auto;
}

.notice-icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

.notice-text {
  font-size: 1.3rem;
  margin-bottom: 15px;
}

.exhibitors-notice p {
  color: var(--text-muted);
  margin-bottom: 25px;
}

/* ================================================
   GALLERY SECTION
   ================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

/* Gallery Carousel - 4 visible, moves one by one */
.gallery-carousel {
  position: relative;
  margin: 0 auto;
}

.gallery-carousel-viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.gallery-carousel-track {
  display: flex;
  transition: transform 0.6s ease-in-out;
  transform: translateX(calc(-1 * (25% + 16px) * var(--gallery-index, 0)));
}

.gallery-carousel-slide {
  flex: 0 0 25%;
  min-width: 25%;
  aspect-ratio: 4/3;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
  margin-right: 16px;
}

.gallery-carousel-slide:last-child {
  margin-right: 0;
}

.gallery-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.95);
  color: var(--text-dark);
  font-size: 1.4rem;
  cursor: pointer;
  z-index: 2;
  box-shadow: var(--shadow-md);
  transition: background 0.3s ease, color 0.3s ease;
}

.gallery-carousel-btn:hover {
  background: var(--solar-green);
  color: var(--white);
}

.gallery-carousel-prev {
  left: 8px;
}

.gallery-carousel-next {
  right: 8px;
}

.gallery-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.gallery-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.gallery-dot.active {
  background: var(--solar-green);
  transform: scale(1.2);
}

/* ================================================
   ORGANIZER SECTION
   ================================================ */
.organizer-section {
  background: #E8ECF0;
  color: var(--text-dark);
}

.organizer-section .section-title {
  color: var(--text-dark);
}

.organizer-section .section-title::after {
  background: var(--solar-green);
}

.organizer-card {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.organizer-logo {
  height: 80px;
  margin: 0 auto 20px;
}

.organizer-card h3 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  color: var(--solar-green-dark);
}

.organizer-card p {
  line-height: 1.8;
  opacity: 0.95;
  margin-bottom: 20px;
  color: var(--text-dark);
}

/* ================================================
   KEY FIGURES SECTION
   ================================================ */
.key-figures-section {
  background: var(--light-bg);
}

.figures-notice {
  text-align: center;
  padding: 40px;
}

.figures-notice .notice-text {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

/* ================================================
   JOIN US SECTION
   ================================================ */
.join-section {
  background: linear-gradient(135deg, var(--solar-green), var(--solar-green-dark));
  color: var(--white);
  text-align: center;
}

.join-section .section-title {
  color: var(--white);
}

.join-section .section-title::after {
  background: var(--white);
}

.join-text {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 40px;
  opacity: 0.95;
}

.join-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.join-buttons .btn-primary {
  background: var(--white);
  color: var(--solar-green-dark);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.join-buttons .btn-secondary {
  background: transparent;
  border: 2px solid var(--white);
  color: var(--white);
  box-shadow: none;
}

.join-buttons .btn-secondary:hover {
  background: var(--white);
  color: var(--solar-green-dark);
}

/* ================================================
   VISIT PAGE - REASONS
   ================================================ */
.reasons-grid {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.reason-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.reason-card.reverse {
  direction: rtl;
}

.reason-card.reverse > * {
  direction: ltr;
}

.reason-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.reason-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.reason-content {
  padding: 20px;
}

.reason-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--solar-green), var(--solar-green-dark));
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  border-radius: 50%;
  margin-bottom: 20px;
}

.reason-content h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.reason-content p {
  color: var(--text-muted);
  line-height: 1.7;
}

/* ================================================
   WHO SHOULD VISIT
   ================================================ */
.who-section {
  background: var(--light-bg);
}

.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.who-card {
  background: var(--white);
  padding: 25px 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
}

.who-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--solar-green);
}

/* ================================================
   SPONSOR PAGE - BENEFITS
   ================================================ */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.benefit-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.3s ease;
  border-bottom: 4px solid transparent;
}

.benefit-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-bottom-color: var(--solar-green);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.benefit-card h3 {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.benefit-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ================================================
   SPONSORSHIP PACKAGES
   ================================================ */
.packages-section {
  background: var(--light-bg);
}

.packages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  margin-bottom: 50px;
}

.package-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 35px 25px;
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.3s ease;
  border-top: 5px solid var(--text-muted);
}

.package-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.package-card.title-sponsor {
  border-top-color: #FFD700;
}

.package-card.diamond-sponsor {
  border-top-color: #B9F2FF;
}

.package-card.gold-sponsor {
  border-top-color: #FFB800;
}

.package-card.silver-sponsor {
  border-top-color: #C0C0C0;
}

.package-badge {
  font-size: 3rem;
  margin-bottom: 15px;
}

.package-card h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.package-card ul {
  text-align: left;
}

.package-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.package-card li:last-child {
  border-bottom: none;
}

.flyer-cta {
  text-align: center;
  padding: 40px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.flyer-cta p {
  margin-bottom: 20px;
  color: var(--text-muted);
}

/* ================================================
   SPONSORS & PARTNERS
   ================================================ */
.sponsors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.sponsors-col h2 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  text-align: center;
}

.coming-soon-box {
  background: var(--light-bg);
  padding: 50px;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 2px dashed var(--border-color);
}

.coming-soon-box p {
  color: var(--text-muted);
  font-size: 1.2rem;
  font-weight: 600;
}

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.step-card {
  background: var(--white);
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--solar-green), var(--solar-green-dark));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Venue Section */
.venue-section {
  background: var(--light-bg);
}

.venue-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.venue-map-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.venue-map-container .venue-map {
  width: 100%;
}

.venue-map iframe {
  width: 100%;
  display: block;
}

.venue-info h3 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.venue-halls {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.venue-details {
  margin-top: 20px;
}

.venue-details p {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.venue-map {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-placeholder {
  padding: 60px 40px;
  text-align: center;
  background: var(--light-bg);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.map-placeholder p:first-child {
  font-size: 3rem;
  margin-bottom: 15px;
}

.map-note {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ================================================
   FORMS
   ================================================ */
.form-section {
  background: var(--light-bg);
}

.form-container {
  max-width: 700px;
  margin: 0 auto;
  background: var(--white);
  padding: 50px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.form-section-title {
  font-size: 1.2rem;
  margin: 30px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--solar-green);
  color: var(--text-dark);
}

.form-section-title:first-of-type {
  margin-top: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="url"],
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--solar-green);
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--light-bg);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
}

.checkbox-label:hover {
  background: rgba(34, 197, 94, 0.1);
}

.checkbox-label input {
  width: 18px;
  height: 18px;
  accent-color: var(--solar-green);
}

.checkbox-label span {
  font-size: 0.95rem;
}

/* ================================================
   ABOUT PAGE - LEADERSHIP
   ================================================ */
.intro-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-psa-logo {
  height: 110px;
  width: auto;
  margin: 15px auto 25px;
}

.intro-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.leadership-section {
  background: var(--light-bg);
}

.leadership-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.leader-card {
  background: var(--white);
  padding: 30px 20px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.leader-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.leader-card.chairman {
  grid-column: span 4;
  max-width: 300px;
  margin: 0 auto 20px;
  border: 2px solid var(--solar-green);
}

.leader-avatar {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--solar-green), var(--solar-green-dark));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0 auto 15px;
}

.leader-card h3 {
  font-size: 1rem;
  margin-bottom: 5px;
  color: var(--text-dark);
}

.leader-title {
  color: var(--solar-green);
  font-size: 0.85rem;
  font-weight: 600;
}

/* ================================================
   MEMBERS SECTION
   ================================================ */
.members-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.members-content h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.members-content p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.members-cta {
  background: var(--light-bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  margin-top: 40px;
}

.members-cta h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.members-cta p {
  margin-bottom: 20px;
}

/* ================================================
   MEMBERSHIP SECTION
   ================================================ */
.membership-section {
  background: #E8ECF0;
  color: var(--text-dark);
}

.membership-card {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.membership-card h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.membership-card > p {
  opacity: 0.9;
  margin-bottom: 30px;
}

.membership-card h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--solar-green-light);
}

.benefits-list {
  text-align: left;
  max-width: 400px;
  margin: 0 auto 40px;
}

.benefits-list li {
  padding: 10px 0;
  font-size: 1.05rem;
  opacity: 0.9;
}

.membership-apply h4 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.membership-apply p {
  opacity: 0.8;
  margin-bottom: 20px;
}

/* ================================================
   AFFILIATE SECTION
   ================================================ */
.affiliate-section {
  background: var(--light-bg);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  background: #ffffff;
  color: #000000;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  height: 60px;
  margin-bottom: 15px;
}

.footer-col p {
  opacity: 0.85;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #000000;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: #000000;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: #000000;
  opacity: 0.85;
  transition: all 0.3s ease;
}

.footer-col ul a:hover {
  opacity: 1;
  color: var(--solar-green-dark);
}

.footer-contact-link {
  color: #000000;
  opacity: 0.85;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.footer-contact-link:hover {
  opacity: 1;
  color: var(--solar-green-dark);
}

.footer-bottom {
  border-top: 1px solid rgba(0,0,0,0.12);
  padding-top: 25px;
  text-align: center;
}

.footer-bottom p {
  color: #000000;
  opacity: 0.75;
  font-size: 0.9rem;
}

/* ================================================
   RESPONSIVE DESIGN
   ================================================ */
@media (max-width: 1024px) {
  .packages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .leadership-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .leader-card.chairman {
    grid-column: span 3;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    gap: 0;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links li {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-date {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .reason-card {
    grid-template-columns: 1fr;
  }
  
  .reason-card.reverse {
    direction: ltr;
  }
  
  .who-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .packages-grid {
    grid-template-columns: 1fr;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  
  .sponsors-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-container {
    padding: 30px 20px;
  }
  
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
  
  .leadership-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .leader-card.chairman {
    grid-column: span 2;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .page-hero h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .who-grid {
    grid-template-columns: 1fr;
  }
  
  .leadership-grid {
    grid-template-columns: 1fr;
  }
  
  .leader-card.chairman {
    grid-column: span 1;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .about-links {
    flex-direction: column;
    gap: 15px;
  }
  
  .join-buttons {
    flex-direction: column;
  }
  
  .join-buttons .btn {
    width: 100%;
  }
}