/*
  Основные стили для сайта IT‑компании
  Цветовая палитра: тёмные оттенки, яркий акцентный цвет и приглушённые тона
*/

/* Переменные цветов */
:root {
  --bg-color: #0a1323;
  --secondary-bg: #0e1e33;
  --card-bg: #162a46;
  --accent-color: #0099ff;
  --text-color: #d5e4f3;
  --muted-text: #7d8ca3;
  --border-radius: 12px;
}

/* Сброс стилей и базовая типографика */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

h1, h2, h3 {
  color: #fff;
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1em;
  color: var(--muted-text);
}

/* Общие контейнеры */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(10, 19, 35, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-list li a {
  color: var(--muted-text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-list li a:hover {
  color: var(--accent-color);
}

/* Hamburger for mobile */
.hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: #fff;
  transition: all 0.3s;
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 70px;
  background: radial-gradient(circle at top left, #11264a, #0a1323 70%);
}

.hero-content h1 {
  font-size: 2.8rem;
  line-height: 1.2;
}

/* Hero content container */
.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.hero-content p {
  margin-top: 1rem;
  max-width: 700px;
}

.btn {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 2rem;
  background-color: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s, transform 0.3s;
}

.btn:hover {
  background-color: #007acc;
  transform: translateY(-2px);
}

/* Section titles */
.section-title {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
}

/* Services Section */
.services {
  padding: 5rem 0;
  background-color: var(--secondary-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.service-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  color: var(--accent-color);
}

.service-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

/* Projects Section */
.projects {
  padding: 5rem 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.project-image {
  height: 200px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Project images backgrounds */
.project-image.image1 {
  background-image: url('../images/project1.jpg');
}

.project-image.image2 {
  background-image: url('../images/project2.jpg');
}

.project-image.image3 {
  background-image: url('../images/project3.jpg');
}

.project-card h3 {
  padding: 1rem;
  font-size: 1.4rem;
}

.project-card p {
  flex-grow: 1;
  padding: 0 1rem 1.5rem;
  color: var(--muted-text);
}

/* About Section */
.about {
  padding: 5rem 0;
  background-color: var(--secondary-bg);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-content ul {
  list-style: none;
  padding-left: 0;
}

.about-content li {
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.2rem;
}

.about-content li:before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-color);
}

/* Contact Section */
.contact {
  padding: 5rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.contact-info p {
  margin-bottom: 1rem;
}

.contact-form {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background-color: #0d1a2f;
  border: 1px solid #1f2f4a;
  border-radius: var(--border-radius);
  color: var(--text-color);
  font-size: 0.9rem;
  resize: vertical;
}

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

.contact-form button {
  width: 100%;
}

/* Footer */
.footer {
  padding: 1.5rem 0;
  background-color: #08131f;
  text-align: center;
  color: var(--muted-text);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-list {
    position: absolute;
    top: 70px;
    right: 0;
    width: 200px;
    background-color: var(--secondary-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    gap: 1rem;
    transform: translateX(100%);
    transition: transform 0.3s;
  }

  .nav-list.active {
    transform: translateX(0);
  }

  .hamburger {
    display: flex;
  }

  /* transform lines into X when menu is open */
  .hamburger.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  .hamburger.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

@media (max-width: 600px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-content p {
    font-size: 0.9rem;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .service-card {
    padding: 1.5rem;
  }
}