:root {
    --primary-color: #2e396b;
    --secondary-color: #d7defa;
    --background-color: #f8f8f8;
    --card-border-radius: 5px;
  }

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

html {
    scroll-behavior: smooth;
  }

body {
    font-family: 'Segoe UI', sans-serif;
    line-height: 1.6;
    background-color: var(--background-color);
    color: #333;
}

.container {
    max-width: 960px;
    margin: 0 auto;
}

h2 + p {
    margin-top: 10px;
}

nav ul li {
    list-style-type: none;
}

nav ul li a {
    text-decoration: none;
}



.playlio-header {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.nav-panel {
    position: sticky;
    top: 0;
    margin: 0 auto;
    padding: 8px 0;
    background-color: var(--primary-color);
    border-bottom: 1px solid #414d81;
}

.nav-menu {
    display: flex;
    justify-content: center;
    gap: 20px;
}


#header-menu li a {
    color: white;
    font-size: 18px;
}

.header-description {
    font-size: 20px;
    font-weight: 400;
}

.header-logo {
    padding: 12px 0;
}

.playlio-logo img {
    width: clamp(180px, 15vw, 280px);
    height: auto;
    margin: 0 auto;
}

.first-screen {
    background: linear-gradient(to right, #ffffff, #eef2f3);
}

.mission,
.playlio-app {
    background: linear-gradient(to left, #d7defa, #d7defa);
}

.playlio-section {
    margin: 0 auto;
    padding: 50px 10px 60px;
    text-align: center;
}

.playlio-section h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.playlio-section p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 16px auto 0;
}

.playlio-macbook-img {
    margin-top: 20px;
}

.playlio-macbook-img img,
.playlio-iphone-img img {
    max-width: 100%;
}

.btn {
    display: inline-block;
    background-color: #007BFF;
    color: white;
    margin-top: 12px;
    padding: 12px 24px;
    font-size: 1rem;
    border-radius: 5px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
}

.btn-hero {
    margin-top: 30px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 20px;
  }

  .feature-item {
    background: white;
    padding: 16px 24px;
    border-radius: var(--card-border-radius);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  }

  .feature-item h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
    color: var(--primary-color);
  }

  .playlio-feedback {
    background-color: var(--secondary-color);
  }

  .info {
    margin: 0 auto;
    max-width: 700px;
  }

  .feedback-form-block {
    display: flex;
    justify-content: center;
    background-color: var(--background-color);
    padding: 30px;
    border-radius: var(--card-border-radius);
    margin: 20px auto 0;
  }

  .feedback-form {
    display: flex;
    flex-direction: column;
    gap: 16px;    
  }

  .feedback-form input {
    padding: 10px 20px;
    font-size: 18px;
  }

  .footer {
    margin: 30px 0;
  }

  .footer-info,
  .control-panel {
    text-align: center;
  }

  @media screen and (max-width: 768px) {
    .nav-panel {
        display: none;
    }
}