/* name CSS Variables (Color Scheme) name */
:root {
  --bg: #0b3d2e;
  --bg-2: #14532d;
  --panel: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --primary: #16a34a;
  --primary-600: #15803d;
  --ring: #86efac;
  --surface: #ecfdf5;
  --border: #d1fae5;
}

/* name Base Styles name */
* { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

html, body { 
  height: 100%; 
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-2) 100%);
  line-height: 1.6;
}

/* name Messages (Success/Error Notifications) name */
.messages-container {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  width: 90%;
  max-width: 500px;
}

.message {
  padding: 16px 24px;
  border-radius: 12px;
  margin-bottom: 12px;
  text-align: center;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: slideDown 0.4s ease-out;
  backdrop-filter: blur(10px);
}

.message.success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  border: 2px solid #34d399;
}

.message.error {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border: 2px solid #f87171;
}

.message.info {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border: 2px solid #60a5fa;
}

.message.warning {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
  border: 2px solid #fbbf24;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* name Header / Navigation name */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  background: rgba(0,0,0,.2);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,.15);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 80px;
  width: auto;
}

.brand-name {
  color: #fff;
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
}

.nav-buttons {
  display: flex;
  gap: 12px;
}

.btn {
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s;
  border: none;
  font-size: 1rem;
  display: inline-block;
}

.btn-secondary {
  background: transparent;
  color: #e7fff1;
  border: 2px solid rgba(255,255,255,.3);
}

.btn-secondary:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.5);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

/* name Hero Section name */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px 60px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 50px;
  color: #e7fff1;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 20px;
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero-highlight {
  color: var(--ring);
  position: relative;
}

.hero p {
  font-size: 1.3rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-large {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.6);
}

/* name Features Section name */
.features {
  max-width: 1200px;
  margin: 60px auto;
  padding: 0 40px;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: white;
  margin-bottom: 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0,0,0,.15);
  transition: transform .15s, box-shadow .15s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0,0,0,.25);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.4rem;
  color: var(--ink);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* name Screenshot Section name */
.screenshot {
  max-width: 1000px;
  margin: 60px auto;
  padding: 0 40px;
  text-align: center;
}

.screenshot-placeholder {
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 60px 40px;
  margin-top: 30px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}

.screenshot-placeholder p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.screenshot-placeholder .emoji {
  font-size: 4rem;
  margin: 20px 0;
}

/* name Tech Stack Section name */
.tech-stack {
  max-width: 1000px;
  margin: 60px auto;
  padding: 40px;
  text-align: center;
}

.stack-subtitle {
  color: rgba(255,255,255,.7);
  font-size: 1.1rem;
  margin-bottom: 30px;
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 30px;
}

.badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 8px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

/* name About Section name */
.about {
  max-width: 800px;
  margin: 60px auto;
  padding: 40px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 16px;
  backdrop-filter: blur(8px);
}

.about h2 {
  color: white;
  font-size: 2rem;
  text-align: center;
  margin-bottom: 24px;
}

.about p {
  color: rgba(255,255,255,.85);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  text-align: center;
}

.about-highlight {
  background: rgba(22, 163, 74, .2);
  border: 1px solid var(--primary);
  border-radius: 8px;
  padding: 20px;
  margin-top: 24px;
}

.about-highlight strong {
  color: var(--ring);
  font-size: 1.2rem;
}

/* name CTA Section name */
.cta {
  max-width: 700px;
  margin: 80px auto 60px;
  padding: 50px 40px;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}

.cta h2 {
  font-size: 2.2rem;
  color: var(--ink);
  margin-bottom: 20px;
}

.cta p {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 32px;
}

/* name Footer name */
.footer {
  border-top: 1px solid rgba(255,255,255,.15);
  padding: 40px;
  text-align: center;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
  color: rgba(255,255,255,.7);
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--ring);
  text-decoration: none;
  font-weight: 600;
  transition: color .15s;
}

.footer-links a:hover {
  color: white;
  text-decoration: underline;
}

.footer p {
  font-size: 0.95rem;
  margin-top: 16px;
}

/* name Responsive Design name */
@media (max-width: 768px) {
  .header {
    padding: 12px 20px;
  }

  .logo-img {
    height: 60px;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  .nav-buttons {
    gap: 8px;
  }

  .btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }

  .messages-container {
    top: 70px;
  }

  .hero {
    padding: 50px 20px 40px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .features {
    padding: 0 20px;
  }

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

  .hero-cta {
    flex-direction: column;
  }

  .btn-large {
    width: 100%;
  }
}