:root {
  --primary-light: #d4f1d4;
  --primary: #a8e6a8;
  --primary-dark: #7dd87d;
  --bg: #ffffff;
  --bg-alt: #f8fdf8;
  --text: #1a1a1a;
  --text-muted: #666666;
  --shadow: rgba(0,0,0,0.1);
  --transition: 0.3s ease;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --bg-alt: #2a2a2a;
  --text: #f0f0f0;
  --text-muted: #aaaaaa;
  --shadow: rgba(0,0,0,0.4);
}

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--bg);
  box-shadow: 0 2px 10px var(--shadow);
  z-index: 1000;
  transition: background var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: bold;
  font-size: 1.2rem;
}

.logo img { height: 40px; }

.nav-links { display: flex; gap: 2rem; }

.nav-links a {
  text-decoration: none;
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: all var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  background: var(--primary-light);
  color: #1a1a1a;
}

.nav-controls { display: flex; gap: 0.5rem; }

.lang-toggle, .theme-toggle {
  padding: 0.5rem 1rem;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--text);
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  transition: all var(--transition);
}

.lang-toggle:hover, .theme-toggle:hover {
  background: var(--primary);
  color: #1a1a1a;
}

/* Hero */
.hero {
  min-height: 100vh;
  padding: 120px 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-dark), #2d8a2d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--primary);
  color: #1a1a1a;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px var(--shadow);
}

.hero-image img {
  width: 100%;
  border-radius: 15px;
  box-shadow: 0 20px 40px var(--shadow);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Sections */
section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

section h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 3rem;
  color: var(--primary-dark);
}

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

.feature-card {
  background: var(--bg-alt);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px var(--shadow);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px var(--shadow);
}

.feature-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 { margin-bottom: 0.5rem; color: var(--primary-dark); }
.feature-card p { color: var(--text-muted); }

/* Workflow */
.workflow { background: var(--bg-alt); border-radius: 20px; margin: 2rem auto; }

.workflow-image {
  text-align: center;
  margin-bottom: 2rem;
}

.workflow-image img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px var(--shadow);
}

.workflow-steps {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-light);
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  transition: all var(--transition);
}

.step:hover {
  background: var(--primary);
  transform: scale(1.05);
}

.step span {
  background: var(--primary-dark);
  color: white;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.screenshot {
  text-align: center;
  transition: all var(--transition);
}

.screenshot:hover { transform: scale(1.05); }

.screenshot img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px var(--shadow);
  margin-bottom: 1rem;
}

.screenshot span {
  color: var(--text-muted);
  font-weight: 500;
}

/* Partners */
.partners {
  text-align: center;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 20px;
  margin: 2rem auto;
}

.partner-text {
  font-size: 1.3rem;
  font-weight: 500;
  color: #1a1a1a;
}

/* About Page */
.about-hero, .contact-hero {
  text-align: center;
  padding-top: 120px;
}

.about-hero h1, .contact-hero h1 {
  font-size: 2.5rem;
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.about-hero p, .contact-hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.scale-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.scale-image img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px var(--shadow);
}

.scale-text ul {
  list-style: none;
  margin: 1.5rem 0;
}

.scale-text li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.scale-text li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-dark);
  font-weight: bold;
}

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

.tech-card {
  background: var(--bg-alt);
  padding: 2rem;
  border-radius: 10px;
  border-left: 4px solid var(--primary-dark);
  box-shadow: 0 5px 15px var(--shadow);
  transition: all var(--transition);
}

.tech-card:hover { transform: translateX(10px); }

.tech-card h3 { color: var(--primary-dark); margin-bottom: 0.5rem; }

.cooperation {
  background: var(--bg-alt);
  border-radius: 20px;
}

.coop-content { text-align: center; font-size: 1.1rem; }

/* Contact Page */
.contact-form-section {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  background: var(--bg-alt);
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px var(--shadow);
}

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

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

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 2px solid var(--primary-light);
  border-radius: 8px;
  font-size: 1rem;
  background: var(--bg);
  color: var(--text);
  transition: border var(--transition);
}

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

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

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.info-card {
  text-align: center;
  padding: 2rem;
  background: var(--bg-alt);
  border-radius: 10px;
  box-shadow: 0 5px 15px var(--shadow);
  transition: all var(--transition);
}

.info-card:hover { transform: translateY(-5px); }

.info-card .icon { font-size: 2.5rem; margin-bottom: 1rem; }
.info-card h3 { color: var(--primary-dark); margin-bottom: 0.5rem; }
.info-card a { color: var(--primary-dark); text-decoration: none; }
.info-card a:hover { text-decoration: underline; }

/* Footer */
footer {
  background: var(--bg-alt);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-weight: bold;
  font-size: 1.2rem;
}

.footer-logo img { height: 35px; }

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--primary-dark); }

footer p { color: var(--text-muted); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 100px; }
  .hero-content h1 { font-size: 2rem; }
  .nav-links { display: none; }
  .scale-content { grid-template-columns: 1fr; }
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}