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

    :root {
      --primary-blue: #0057b8;
      --primary-green: #006729;
      --accent-red: #d31246;
      --text-dark: #1a1a1a;
      --text-light: #6b7280;
      --white: #ffffff;
      --light-gray: #f8fafc;
      --border-color: #e5e7eb;
      --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
      --shadow-medium: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
      --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    }

    body {
      font-family: 'Inter', sans-serif;
      line-height: 1.6;
      color: var(--text-dark);
      overflow-x: hidden;
    }

    /* Navbar */
    .navbar {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 1000;
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
      backdrop-filter: blur(20px);
      box-shadow: var(--shadow-light);
      transition: all 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(0, 87, 184, 0.95);
      backdrop-filter: blur(20px);
    }

    .navbar__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between; /* logoların sağa ve sola yaslanmasını sağlar */
  align-items: center;
  height: 100px;
}


.navbar__logo img {
  height: 80px; /* biraz daha büyük */
  transition: transform 0.3s ease;
}

    .navbar__logo:hover img {
      transform: scale(1.05);
    }


    .navbar__acv {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100px;
      padding: 0 1rem;
      margin-bottom: 1rem;
    }

    .acv-logo {
  height: 80px; /* büyütüldü */
  object-fit: contain;
  display: block;
}


    /* Hero Section */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/acev_arkaplan.png');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      opacity: 0.2;
      z-index: -1;
    }

    /*.hero::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('/images/fiba-logo.svg');
      opacity: 0.3;
    }*/

    .hero__content {
      text-align: center;
      max-width: 1000px;
      padding: 2rem;
      z-index: 2;
      position: relative;
    }

    .hero__badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 50px;
      padding: 0.75rem 1.5rem;
      color: var(--primary-blue);
      font-size: 1.5rem;
      font-weight: 500;
      margin-bottom: 2rem;
      animation: fadeInUp 1s ease-out;
    }

    .hero__title {
      font-size: 4.5rem;
      font-weight: 800;
      color: var(--primary-blue);
      margin-bottom: 1.5rem;
      line-height: 1.1;
      animation: fadeInUp 1s ease-out 0.2s both;
      text-shadow: 2px 2px 4px rgba(0, 87, 184, 0.3);
    }

    .hero__title-accent {
      background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      position: relative;
    }

    .hero__subtitle {
      font-size: 1.5rem;
      color: var(--primary-blue);
      margin-bottom: 3rem;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
      animation: fadeInUp 1s ease-out 0.4s both;
      font-weight: 500;
      line-height: 1.6;
    }

    .hero__cta {
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
      background: var(--primary-blue);
      color: var(--white);
      text-decoration: none;
      padding: 1rem 2rem;
      border-radius: 50px;
      font-weight: 600;
      font-size: 1.1rem;
      box-shadow: var(--shadow-medium);
      transition: all 0.3s ease;
      animation: fadeInUp 1s ease-out 0.6s both;
    }

    .hero__cta:hover {
      background: var(--primary-green);
      transform: translateY(-2px);
      box-shadow: var(--shadow-heavy);
    }

    /* Floating Elements */
    .floating-elements {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 1;
    }

    .floating-element {
      position: absolute;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 50%;
      animation: float 6s ease-in-out infinite;
    }

    .floating-element:nth-child(1) {
      top: 20%;
      left: 10%;
      width: 80px;
      height: 80px;
      animation-delay: 0s;
    }

    .floating-element:nth-child(2) {
      top: 60%;
      right: 15%;
      width: 120px;
      height: 120px;
      animation-delay: 2s;
    }

    .floating-element:nth-child(3) {
      bottom: 30%;
      left: 20%;
      width: 60px;
      height: 60px;
      animation-delay: 4s;
    }

    /* Features Section */
    .features {
      padding: 8rem 1.7rem;
      background: var(--light-gray);
      position: relative;
    }

    .features__container {
      max-width: 1200px;
      margin: 0 auto;
    }

    .features__header {
      text-align: center;
      margin-bottom: 5rem;
    }

    .features__title {
      font-size: 3.2rem;
      font-weight: 700;
      color: var(--primary-blue);
      margin-bottom: 1rem;
    }

    .features__subtitle {
      font-size: 1.3rem;
      color: var(--primary-blue);
      max-width: 800px;
      margin: 0 auto;
    }

    .features__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
      gap: 2rem;
    }

    .feature-card {
      background: var(--white);
      padding: 2.5rem;
      border-radius: 20px;
      box-shadow: var(--shadow-light);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    }

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

    .feature-card__icon {
      width: 60px;
      height: 60px;
      background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
      border-radius: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.5rem;
      color: var(--white);
      font-size: 1.5rem;
    }

    .feature-card__title {
      font-size: 1.6rem;
      font-weight: 600;
      color: var(--primary-blue);
      margin-bottom: 1rem;
    }

    .feature-card__description {
      color: var(--text-light);
      line-height: 1.7;
      font-size: 1.1rem;
    }

    /* Form Section */
    .form-section {
      padding: 8rem 2rem;
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
      position: relative;
    }

    .form-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="%23ffffff" stroke-width="1" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    }

    .form-section__container {
      max-width: 800px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .form-section__header {
      text-align: center;
      margin-bottom: 3rem;
    }

    .form-section__title {
      font-size: 3.2rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 1rem;
    }

    .form-section__subtitle {
      font-size: 1.3rem;
      color: rgba(255, 255, 255, 0.9);
    }

    .form-card {
      background: var(--white);
      padding: 3rem;
      border-radius: 24px;
      box-shadow: var(--shadow-heavy);
      backdrop-filter: blur(20px);
    }

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

    .form-input {
      width: 100%;
      padding: 1.2rem 1.5rem;
      border: 2px solid var(--border-color);
      border-radius: 12px;
      font-size: 1.1rem;
      font-family: inherit;
      transition: all 0.3s ease;
      background: var(--white);
    }

    .form-input:focus {
      outline: none;
      border-color: var(--primary-blue);
      box-shadow: 0 0 0 3px rgba(0, 87, 184, 0.1);
    }

    .form-input::placeholder {
      color: var(--text-light);
    }

    .submit-btn {
      width: 100%;
      padding: 1.2rem 2rem;
      background: var(--primary-blue);
      color: var(--white);
      border: none;
      border-radius: 12px;
      font-size: 1.2rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      margin-top: 1rem;
    }

    .submit-btn:hover:not(:disabled) {
      cursor: pointer;
      transform: translateY(-2px);
      box-shadow: var(--shadow-medium);
    }

    .submit-btn:disabled {
      background: #ccc;
      cursor: not-allowed;
      opacity: 0.7;
    }

    .privacy-text {
      margin-top: 1.5rem;
      font-size: 0.9rem;
      color: var(--text-light);
      text-align: center;
      line-height: 1.6;
    }

    .privacy-text a {
      color: var(--primary-blue);
      text-decoration: none;
    }

    .privacy-text a:hover {
      text-decoration: underline;
    }

    /* Details Section */
    .details-section {
      background: white;
      border-radius: 15px;
      padding: 30px;
      margin: 40px 0;
      box-shadow: 0 10px 30px rgba(0, 87, 184, 0.1);
      border: 2px solid var(--primary-blue);
    }

    .details-toggle {
      border: none;
      padding: 15px 25px;
      border-radius: 10px;
      font-size: 1.2rem;
      font-weight: 600;
      cursor: pointer;
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all 0.3s ease;
    }

    .details-toggle:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 87, 184, 0.3);
    }



    .details-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      margin-top: 0;
    }

    .details-content.active {
      max-height: 300px;
      /* veya ihtiyacına göre 400px, 500px */
      overflow-y: auto;
      margin-top: 20px;
      padding-right: 10px;
      scroll-behavior: smooth;
    }


    .details-list li {
      background: #f8f9ff;
      padding: 18px 25px;
      margin-bottom: 12px;
      border-radius: 10px;
      border-left: 4px solid var(--primary-blue);
      font-size: 0.7rem;
      line-height: 1.6;
      color: #2c3e50;
      position: relative;
      padding-left: 40px;
    }

    .details-list li:before {
      content: "✓";
      color: var(--primary-green);
      font-weight: bold;
      position: absolute;
      left: 15px;
      top: 18px;
      font-size: 1.2rem;
    }

    #toggle-icon {
      transition: transform 0.3s ease;
      font-size: 1.2rem;
    }

    #toggle-icon.rotate {
      transform: rotate(180deg);
    }

    /* Footer */
    .footer {
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
      padding: 2rem;
      text-align: center;
    }

    .footer__text {
      color: var(--white);
      font-size: 0.875rem;
    }

    /* Animations */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes float {

      0%,
      100% {
        transform: translateY(0px);
      }

      50% {
        transform: translateY(-20px);
      }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .navbar__container {
        flex-direction: column;
        gap: 10px;
        align-items: center;
      }

      .navbar__acv {
        padding: 0;
        height: auto;
      }

      .acv-logo {
        height: 60px;
      }



      .hero__title {
        font-size: 2.8rem;
      }

      .hero__subtitle {
        font-size: 1.2rem;
      }

      .features__title {
        font-size: 2.2rem;
      }

      .form-section__title {
        font-size: 2.2rem;
      }

      .form-card {
        padding: 2rem;
        margin: 0 1rem;
      }

      .features__grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }

      .feature-card {
        padding: 2rem;
      }

      .details-content.active {
        max-height: 500px;
      }

    }

    @media (max-width: 480px) {
      .hero__content {
        padding: 1rem;
      }

      .hero__title {
        font-size: 2.2rem;
      }

      .features,
      .form-section {
        padding: 4rem 1rem;
      }

      .form-card {
        padding: 1.5rem;
      }

      .details-content.active {
        max-height: 250px;
      }
    }

    /* Popup Styles */
    .popup-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 10000;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }

    .popup-overlay.active {
      opacity: 1;
      visibility: visible;
    }

    .popup-content {
      background: var(--white);
      padding: 2rem;
      border-radius: 16px;
      max-width: 500px;
      width: 90%;
      text-align: center;
      position: relative;
      transform: scale(0.9);
      transition: transform 0.3s ease;
    }

    .popup-overlay.active .popup-content {
      transform: scale(1);
    }

    .popup-close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-light);
    }

    .popup-message {
      font-size: 1.1rem;
      line-height: 1.6;
      color: var(--text-dark);
    }

    .popup-content.success {
      border-top: 4px solid var(--primary-green);
    }

    .popup-content.error {
      border-top: 4px solid var(--accent-red);
    }
	
	 
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html, body { height: 100%; }
  body {
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text-dark);
    display: flex; flex-direction: column;
    min-height: 100vh;
  }
  
    /* Navbar */
    .navbar {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 1000;
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
      backdrop-filter: blur(20px);
      box-shadow: var(--shadow-light);
      transition: all 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(0, 87, 184, 0.95);
      backdrop-filter: blur(20px);
    }

    .navbar__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between; /* logoların sağa ve sola yaslanmasını sağlar */
  align-items: center;
  height: 100px;
}


.navbar__logo img {
  height: 80px; /* biraz daha büyük */
  transition: transform 0.3s ease;
}

    .navbar__logo:hover img {
      transform: scale(1.05);
    }


    .navbar__acv {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100px;
      padding: 0 1rem;
      margin-bottom: 1rem;
    }

    .acv-logo {
  height: 80px; /* büyütüldü */
  object-fit: contain;
  display: block;
}

  .brand { display:flex; align-items:center; gap:10px; }
  .brand .tag { opacity:.9; font-weight:600; font-size:.95rem; }
  .content {
    flex: 1;
    background: linear-gradient(180deg, rgba(0,176,255,.08), rgba(60,179,113,.08));
    display: grid;
    place-items: center;
    padding: 4rem 1rem;
    text-align: center;
  }
  .card {
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(8px);
    border-radius: 20px;
    padding: clamp(24px, 4vw, 40px);
    width: min(780px, 92vw);
    box-shadow: 0 20px 60px rgba(0,0,0,.12);
    border: 1px solid rgba(0,0,0,.06);
  }
  h1 {
    font-size: clamp(22px, 3.2vw, 34px);
    line-height: 1.2;
    margin-bottom: 12px;
  }
  p.lead {
    font-size: clamp(16px, 2.1vw, 20px);
    opacity: .9;
    margin-bottom: 28px;
  }
  .cta {
    display: inline-flex; align-items: center; justify-content: center;
    border: none; border-radius: 999px;
    padding: 14px 22px; font-weight: 700; text-decoration: none;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
    box-shadow: 0 6px 18px rgba(0,0,0,.12);
  }
  .cta:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(0,0,0,.16); }
  .cta:active { transform: translateY(0); }
  .cta.primary { background: var(--primary-blue); color: var(--white); }
  .cta.success { background: var(--primary-green); color: var(--white); }
  .cta.error   { background: var(--accent-red); color: var(--white); }
  .footer {
    text-align:center; padding: 16px;
    background: linear-gradient(135deg, var(--primary-blue), #006729);
    color: var(--white); font-size: .9rem;
  }
  .cloud-bg {
    background-image: radial-gradient(ellipse at bottom, rgba(255,255,255,.7), rgba(255,255,255,0) 60%);
    background-repeat: no-repeat;
  }
  .pill {
    display:inline-block; margin-bottom:16px; font-weight:600;
    padding:8px 14px; border-radius:999px; font-size:.9rem;
    background: rgba(0,0,0,.04);
  }
  
 
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html, body { height: 100%; }
  body {
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text-dark);
    display: flex; flex-direction: column;
    min-height: 100vh;
  }
  
    /* Navbar */
    .navbar {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 1000;
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
      backdrop-filter: blur(20px);
      box-shadow: var(--shadow-light);
      transition: all 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(0, 87, 184, 0.95);
      backdrop-filter: blur(20px);
    }

    .navbar__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between; /* logoların sağa ve sola yaslanmasını sağlar */
  align-items: center;
  height: 100px;
}


.navbar__logo img {
  height: 80px; /* biraz daha büyük */
  transition: transform 0.3s ease;
}

    .navbar__logo:hover img {
      transform: scale(1.05);
    }


    .navbar__acv {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100px;
      padding: 0 1rem;
      margin-bottom: 1rem;
    }

    .acv-logo {
  height: 80px; /* büyütüldü */
  object-fit: contain;
  display: block;
}

  .brand { display:flex; align-items:center; gap:10px; }
  .brand .tag { opacity:.9; font-weight:600; font-size:.95rem; }
  .content {
    flex: 1;
    background: linear-gradient(180deg, rgba(0,176,255,.08), rgba(60,179,113,.08));
    display: grid;
    place-items: center;
    padding: 4rem 1rem;
    text-align: center;
  }
  .card {
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(8px);
    border-radius: 20px;
    padding: clamp(24px, 4vw, 40px);
    width: min(780px, 92vw);
    box-shadow: 0 20px 60px rgba(0,0,0,.12);
    border: 1px solid rgba(0,0,0,.06);
  }
  h1 {
    font-size: clamp(22px, 3.2vw, 34px);
    line-height: 1.2;
    margin-bottom: 12px;
  }
  p.lead {
    font-size: clamp(16px, 2.1vw, 20px);
    opacity: .9;
    margin-bottom: 28px;
  }
  .cta {
    display: inline-flex; align-items: center; justify-content: center;
    border: none; border-radius: 999px;
    padding: 14px 22px; font-weight: 700; text-decoration: none;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
    box-shadow: 0 6px 18px rgba(0,0,0,.12);
  }
  .cta:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(0,0,0,.16); }
  .cta:active { transform: translateY(0); }
  .cta.primary { background: var(--primary-blue); color: var(--white); }
  .cta.success { background: var(--primary-green); color: var(--white); }
  .cta.error   { background: var(--accent-red); color: var(--white); }
  .footer {
    text-align:center; padding: 16px;
    background: linear-gradient(135deg, var(--primary-blue), #006729);
    color: var(--white); font-size: .9rem;
  }
  .cloud-bg {
    background-image: radial-gradient(ellipse at bottom, rgba(255,255,255,.7), rgba(255,255,255,0) 60%);
    background-repeat: no-repeat;
  }
  .pill {
    display:inline-block; margin-bottom:16px; font-weight:600;
    padding:8px 14px; border-radius:999px; font-size:.9rem;
    background: rgba(0,0,0,.04);
  }