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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a192f;
    color: #ccd6f6;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ШАПКА */
.header {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #233554;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: #64ffda;
    text-decoration: none;
}

.logo i {
    font-size: 28px;
}

/* НАВИГАЦИЯ */
.nav-tabs {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-tabs a {
    color: #8892b0;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-tabs a:hover,
.nav-tabs a.active {
    color: #64ffda;
}

.nav-tabs a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #64ffda;
    border-radius: 1px;
}

/* ОСНОВНОЙ КОНТЕНТ */
.main-content {
    padding: 40px 0;
    min-height: calc(100vh - 160px);
}

/* ПОДВАЛ */
.footer {
    border-top: 1px solid #233554;
    padding: 30px 0;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: #8892b0;
    font-size: 14px;
}

.security-badge {
    background: rgba(100, 255, 218, 0.1);
    color: #64ffda;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ОБЩИЕ КЛАССЫ */
.page-header {
    margin-bottom: 40px;
}

.page-title {
    font-size: 36px;
    color: #ccd6f6;
    margin-bottom: 10px;
    font-weight: 700;
}

.page-subtitle {
    color: #8892b0;
    font-size: 18px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    background: rgba(100, 255, 218, 0.1);
    color: #64ffda;
    border: 1px solid rgba(100, 255, 218, 0.2);
}

.btn:hover {
    background: rgba(100, 255, 218, 0.2);
    transform: translateY(-2px);
}

.btn-primary {
    background: #64ffda;
    color: #0a192f;
    border: none;
}

.btn-primary:hover {
    background: #52d3b8;
}

.category-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 6px;
    margin-bottom: 6px;
}

.tag-proof {
    background: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.tag-encrypted {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.tag-confidential {
    background: rgba(255, 107, 53, 0.1);
    color: #ff6b35;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

/* АДАПТИВ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-tabs {
        gap: 20px;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}