:root {
  --bg-color: #0d1117;
  --card-bg: #161b22;
  --accent-color: #ffbf00;     
  --accent-hover: #d9a000;     
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --border-color: #30363d;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

/* Navigation */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  /* transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.2s ease; */
}

.logo:hover {
  transform: scale(1.05);
  opacity: 0.95;
}

.logo span {
  color: var(--accent-color);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-github, .btn-contact, .btn-download {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-github:hover {
  background-color: var(--border-color);
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.btn-contact {
  color: var(--text-muted);
}

.btn-contact:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
}

.btn-download {
  background-color: var(--accent-color);
  color: #000;
}

.btn-download:hover {
  background-color: var(--accent-hover);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(255, 191, 0, 0.35);
}

.hero {
  text-align: center;
  padding: 5rem 1rem 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 191, 0, 0.1);
  color: var(--accent-color);
  padding: 0.35rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 191, 0, 0.25);
  transition: transform 0.2s ease, background 0.2s ease;
}

.hero-badge:hover {
  transform: scale(1.04);
  background: rgba(255, 191, 0, 0.18);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-block;
  background-color: var(--accent-color);
  color: #000;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #000;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(255, 191, 0, 0.4);
}

.preview-container {
  display: flex;
  justify-content: center;
  padding: 1rem;
}

.macbook-window {
  width: 100%;
  max-width: 750px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.hover-glow:hover {
  transform: translateY(-4px);
  border-color: var(--accent-color);
  box-shadow: 0 12px 30px rgba(255, 191, 0, 0.2);
}

.window-header {
  background-color: #090d11;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.window-body video {
  width: 100%;
  display: block;
}

.features {
  max-width: 1000px;
  margin: 5rem auto;
  padding: 0 1.5rem;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2rem;
}

.section-title p {
  color: var(--text-muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 10px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-6px);
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  transition: transform 0.25s ease;
}

.hover-lift:hover .card-icon {
  transform: scale(1.15) rotate(5deg);
}

footer {
  text-align: center;
  padding: 3rem 1rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-email {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s ease, text-decoration 0.2s ease;
}

.footer-email:hover {
  text-decoration: underline;
  opacity: 0.85;
}