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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #fdfdfd;
  color: #222;
  line-height: 1.6;
  padding: 20px;
}

/* Header */
header {
  background-color: #e5efff;
  padding: 30px 20px;
  border-radius: 10px;
  margin: 0 auto 40px auto;
  max-width: 800px;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  color: #111;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1rem;
  color: #444;
  margin-top: 5px;
  text-align: center;
}

/* Navigation */
nav {
  margin-top: 15px;
}

nav a {
  text-decoration: none;
  color: #0f5fc2;
  margin: 0 10px;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

/* Sections */
section {
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

h2 {
  color: #0f5fc2;
  font-size: 1.8rem;
  margin-bottom: 15px;
}

ul {
  list-style-type: square;
  padding-left: 20px;
}

p {
  text-align: justify;
  margin-bottom: 15px;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 700px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1100px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* Project Card */
.project {
  border: 1px solid #ccc;
  padding: 20px;
  border-radius: 10px;
  background-color: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.project:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 20px rgba(15, 95, 194, 0.2);
  background-color: #f0f7ff;
  border-color: #0f5fc2;
}

/* Заголовки проектов */
.project h3 {
  color: #0f5fc2;
  margin-bottom: 10px;
}

.project p {
  margin-bottom: 10px;
}

/* Links */
a {
  color: #0f5fc2;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

/* Footer */
footer {
  padding: 20px;
  color: #777;
  font-size: 0.9rem;
  max-width: 800px;
  margin: 40px auto 0 auto;
  text-align: center;
  border-top: 1px solid #ddd;
}

footer p {
  text-align: center;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  header h1 {
    font-size: 1.8rem;
  }

  header p {
    font-size: 1rem;
  }

  nav a {
    display: block;
    margin: 8px 0;
  }

  h2 {
    font-size: 1.4rem;
  }
  .btn-primary{
    display:inline-block;
    padding:10px 16px;
    border-radius:12px;
    background:#317EFB;
    color:#fff;
    font-weight:600;
    text-decoration:none;
    box-shadow:0 6px 18px rgba(0,0,0,.15);
    transition:transform .08s ease, opacity .2s ease;
  }
  .btn-primary:hover{ opacity:.95; }
  .btn-primary:active{ transform:translateY(1px); }
}