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

body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
line-height: 1.6;
color: #333;
min-height: 100vh;
display: flex;
flex-direction: column;
}

header {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
position: sticky;
top: 0;
z-index: 1000;
}

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

.logo h1 {
color: white;
font-size: 1.5rem;
}

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

.nav-menu a {
color: white;
text-decoration: none;
font-weight: 500;
padding: 0.5rem 1rem;
border-radius: 5px;
transition: all 0.3s ease;
}

.nav-menu a:hover {
background: rgba(255,255,255,0.2);
}

.nav-menu a.active {
background: rgba(255,255,255,0.3);
font-weight: 600;
}

.burger {
display: none;
flex-direction: column;
cursor: pointer;
gap: 5px;
}

.burger span {
width: 25px;
height: 3px;
background: white;
transition: all 0.3s ease;
border-radius: 3px;
}

main {
flex: 1;
max-width: 1200px;
margin: 0 auto;
padding: 3rem 2rem;
width: 100%;
}

.page-container {
background: white;
padding: 2rem;
border-radius: 10px;
box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.page-title {
font-size: 2.5rem;
color: #667eea;
margin-bottom: 1rem;
}

.page-subtitle {
font-size: 1.2rem;
color: #666;
margin-bottom: 2rem;
}

footer {
background: #2c3e50;
color: white;
padding: 2rem;
text-align: center;
margin-top: auto;
}

.footer-content p {
margin: 0.3rem 0;
}

@media (max-width: 768px) {
.nav-menu {
position: fixed;
left: -100%;
top: 70px;
flex-direction: column;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
width: 100%;
text-align: center;
transition: 0.3s;
box-shadow: 0 10px 27px rgba(0,0,0,0.05);
padding: 2rem 0;
gap: 0;
}

.nav-menu li {
margin: 0.5rem 0;
}

.nav-menu.active {
left: 0;
}

.burger {
display: flex;
}

.burger.active span:nth-child(1) {
transform: rotate(45deg) translate(8px, 8px);
}

.burger.active span:nth-child(2) {
opacity: 0;
}

.burger.active span:nth-child(3) {
transform: rotate(-45deg) translate(7px, -6px);
}

.page-title {
font-size: 2rem;
}

main {
padding: 2rem 1rem;
}
}