@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@400;500;600;700;800;900&display=swap");

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(18, 18, 26, 0.8);
  --bg-glass: rgba(139, 92, 246, 0.05);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-orange: #f97316;
  --accent-pink: #ec4899;
  --accent-green: #10b981;
  --gradient-purple: linear-gradient(135deg, #8b5cf6, #6d28d9);
  --gradient-cyan: linear-gradient(135deg, #06b6d4, #0891b2);
  --gradient-mixed: linear-gradient(135deg, #8b5cf6, #06b6d4);
  --border-color: rgba(139, 92, 246, 0.2);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========== NAVIGATION ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 0.7rem 2rem;
  background: rgba(10, 10, 15, 0.95);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.nav-logo .logo-text {
  font-family: "Orbitron", sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-mixed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-purple);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-purple);
  border-radius: 2px;
}

.nav-cta {
  padding: 0.6rem 1.5rem;
  background: var(--gradient-purple) !important;
  color: white !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.mobile-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== HERO SECTION ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 15, 0.4) 0%,
    rgba(10, 10, 15, 0.8) 60%,
    var(--bg-primary) 100%
  );
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent-purple);
  border-radius: 50%;
  animation: float-particle 6s infinite ease-in-out;
  opacity: 0.6;
}

.particle:nth-child(2) {
  left: 20%;
  top: 30%;
  animation-delay: 1s;
  background: var(--accent-cyan);
}
.particle:nth-child(3) {
  left: 70%;
  top: 20%;
  animation-delay: 2s;
}
.particle:nth-child(4) {
  left: 40%;
  top: 60%;
  animation-delay: 3s;
  background: var(--accent-orange);
}
.particle:nth-child(5) {
  left: 80%;
  top: 50%;
  animation-delay: 4s;
  background: var(--accent-cyan);
}
.particle:nth-child(6) {
  left: 10%;
  top: 70%;
  animation-delay: 5s;
}
.particle:nth-child(7) {
  left: 60%;
  top: 80%;
  animation-delay: 2.5s;
  background: var(--accent-pink);
}
.particle:nth-child(8) {
  left: 90%;
  top: 30%;
  animation-delay: 3.5s;
  background: var(--accent-green);
}

@keyframes float-particle {
  0%,
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-30px) scale(1.5);
    opacity: 1;
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.2rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-purple);
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.hero h1 {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 .gradient-text {
  background: var(--gradient-mixed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: "Inter", sans-serif;
}

.btn-primary {
  background: var(--gradient-purple);
  color: white;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-glass);
  border-color: var(--accent-purple);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: "Orbitron", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-mixed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ========== SECTIONS ========== */
.section {
  padding: 6rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.section-header h2 {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ========== CARDS ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-mixed);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 10px 40px rgba(139, 92, 246, 0.1);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card-icon.purple {
  background: rgba(139, 92, 246, 0.15);
}
.card-icon.cyan {
  background: rgba(6, 182, 212, 0.15);
}
.card-icon.orange {
  background: rgba(249, 115, 22, 0.15);
}
.card-icon.pink {
  background: rgba(236, 72, 153, 0.15);
}
.card-icon.green {
  background: rgba(16, 185, 129, 0.15);
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.8rem;
  background: rgba(139, 92, 246, 0.1);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-purple);
  margin-top: 1rem;
}

.card-image {
  width: 100%;
  height: 180px;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1rem;
  background: var(--bg-secondary);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.card-rating {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--accent-orange);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

/* ========== PAGE HERO (sub pages) ========== */
.page-hero {
  padding: 10rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.page-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 15, 0.5) 0%,
    var(--bg-primary) 100%
  );
}

.page-hero-content {
  position: relative;
  z-index: 2;
}

.page-hero h1 {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========== FEATURES GRID ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: var(--shadow-glow);
}

.feature-card .icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.2rem;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== CHALLENGE CARDS ========== */
.challenge-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: var(--transition);
}

.challenge-card:hover {
  border-color: rgba(249, 115, 22, 0.4);
  transform: translateX(5px);
}

.challenge-number {
  font-family: "Orbitron", sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-orange);
  min-width: 50px;
}

.challenge-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.challenge-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.challenge-status {
  margin-left: auto;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.challenge-status.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}

.challenge-status.upcoming {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

.challenge-status.ended {
  background: rgba(113, 113, 122, 0.15);
  color: var(--text-muted);
}

/* ========== ABOUT PAGE ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.about-text h2 {
  font-family: "Orbitron", sans-serif;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.4);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-mixed);
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.team-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.team-card .role {
  color: var(--accent-purple);
  font-size: 0.85rem;
  margin-bottom: 0.8rem;
}

.team-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ========== CONTACT PAGE ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8rem 1.2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(139, 92, 246, 0.4);
}

.contact-item .icon {
  width: 45px;
  height: 45px;
  border-radius: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.contact-item p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ========== PRIVACY PAGE ========== */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.privacy-content h2 {
  font-family: "Orbitron", sans-serif;
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  color: var(--accent-purple);
}

.privacy-content h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.8rem;
}

.privacy-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.privacy-content ul {
  color: var(--text-secondary);
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.privacy-content ul li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo-text {
  font-family: "Orbitron", sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--gradient-mixed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  display: block;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.7rem;
}

.footer-col ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent-purple);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-socials {
  display: flex;
  gap: 0.8rem;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-socials a:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  transform: translateY(-2px);
}

/* ========== DISCLAIMER ========== */
.disclaimer {
  background: rgba(139, 92, 246, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 2rem auto;
  max-width: 1400px;
  text-align: center;
}

.disclaimer p {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== CTA SECTION ========== */
.cta-section {
  text-align: center;
  padding: 5rem 2rem;
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.1),
    rgba(6, 182, 212, 0.05)
  );
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  margin: 2rem auto;
  max-width: 1400px;
}

.cta-section h2 {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 0.5rem;
    transition: var(--transition);
    border-left: 1px solid var(--border-color);
    z-index: 999;
  }

  .nav-links.active {
    right: 0;
  }

  .mobile-toggle {
    display: flex;
    z-index: 1001;
  }

  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .challenge-card {
    flex-direction: column;
    text-align: center;
  }

  .challenge-status {
    margin-left: 0;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 4rem 1rem;
  }
}