    :root {
      --bg: #0e0e10;
      --text: #ffffff;
      --text-muted: #888888;
      --mint: #00f5a0;
      --card: #1a1a1a;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
    }
    header.navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 1.5rem;
      background-color: var(--bg);
      border-bottom: 1px solid #222;
      z-index: 1001;
    }
    .logo img {
      height: 36px;
    }
    .menu-toggle {
      display: none;
      font-size: 1.8rem;
      background: none;
      color: var(--text);
      border: none;
      cursor: pointer;
      z-index: 1002;
    }
    nav {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    nav a, nav button {
      color: var(--text-muted);
      text-decoration: none;
      font-weight: 600;
      background: none;
      border: none;
      cursor: pointer;
      font-size: 1rem;
      transition: color 0.3s;
    }
    nav a:hover,
    nav button:hover {
      color: var(--mint);
    }
    .btn-outline {
      padding: 0.4rem 1rem;
      border: 1px solid var(--mint);
      border-radius: 20px;
      color: var(--mint);
    }
    .hero {
      text-align: center;
      padding: 6rem 1.5rem 4rem;
      background: radial-gradient(circle at top, #1e1e1e, var(--bg));
      margin-top: 64px;
    }
    .hero h1 {
      font-size: 2.5rem;
      font-weight: 800;
      max-width: 700px;
      margin: auto;
    }
    .hero p {
      color: var(--text-muted);
      max-width: 600px;
      margin: 1rem auto 2rem;
      font-size: 1.1rem;
    }
    .btn-primary {
      background: var(--mint);
      color: #0e0e10;
      padding: 0.7rem 1.4rem;
      border: none;
      border-radius: 999px;
      font-weight: 600;
      cursor: pointer;
      min-width: 160px;
      text-align: center;
    }
    .banner-carousel-container {
      width: 100%;
      overflow: hidden;
      white-space: nowrap;
      background-color: #111;
      padding: 1rem 0;
    }
    .banner-carousel-texts {
      display: inline-block;
      white-space: nowrap;
      animation: bannerScroll 20s linear infinite;
    }
    .banner-carousel-texts span {
      display: inline-block;
      margin: 0 3rem;
      font-size: 1.2rem;
      color: var(--text-muted);
    }
    @keyframes bannerScroll {
      from {
        transform: translateX(100%);
      }
      to {
        transform: translateX(-100%);
      }
    }
    .section {
      padding: 4rem 1.5rem;
      max-width: 1200px;
      margin: auto;
    }
    .section h2 {
      font-size: 2rem;
      color: var(--mint);
      margin-bottom: 1rem;
      text-align: center;
    }
    .section p {
      color: var(--text-muted);
      max-width: 800px;
      margin: auto;
      text-align: center;
    }
    .projects {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      margin-top: 3rem;
      justify-content: center;
    }
 .card {
  background: rgba(255, 255, 255, 0.05); /* saydam beyaz */
  backdrop-filter: blur(10px); /* camsı bulanıklık */
  -webkit-backdrop-filter: blur(10px); /* Safari desteği */
  border: 1px solid rgba(255, 255, 255, 0.1); /* ince kenar çizgi */
  border-radius: 16px;
  padding: 2rem;
  flex: 1 1 300px;
  max-width: 360px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
}

    .card h3 {
      color: var(--mint);
      margin-bottom: 0.5rem;
    }
    footer {
      text-align: center;
      padding: 2rem 1rem;
      border-top: 1px solid #222;
      background: #0b0b0b;
      color: var(--text-muted);
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      nav {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 250px;
        background: var(--bg);
        flex-direction: column;
        padding: 4rem 1rem 1rem;
        gap: 1.5rem;
        transition: right 0.3s ease-in-out;
        box-shadow: -2px 0 5px rgba(0,0,0,0.3);
        z-index: 1000;
      }
      nav.active {
        right: 0;
      }
      nav a, nav button {
        width: 100%;
        text-align: left;
        font-size: 1.1rem;
        padding: 0.5rem 0;
      }
    }
    .card.hoverable:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 20px rgba(0, 245, 160, 0.3); /* mint rengi gölge */
  transition: all 0.3s ease;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 600px;
  margin: 2rem auto 0;
}

form label {
  font-weight: 600;
  color: var(--mint);
  text-align: left;
}

form input,
form textarea {
  padding: 0.8rem 1rem;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  resize: vertical;
}

form input:focus,
form textarea:focus {
  outline: none;
  border-color: var(--mint);
}

form button[type="submit"] {
  align-self: flex-start;
}

.app-gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.app-gallery .screenshot {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  overflow: hidden;
  max-width: 280px;
  flex: 1 1 240px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.app-gallery .screenshot img {
  width: 100%;
  display: block;
}
.app-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding: 20px;
}

.app-gallery .screenshot img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: contain;
}
