@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    --bg-primary: #0E1621;
    --bg-secondary: #17212B;
    --bg-tertiary: #242F3D;
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --accent-primary: #2B5278;
    --accent-secondary: #3A6898;
    --border-color: rgba(255, 255, 255, 0.05);
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Navbar */
.navbar {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 22px;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand img {
    width: 32px;
    height: 32px;
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.1);
}

.navbar .navbar-nav {
    margin: 0 auto;
    display: flex;
    gap: 20px;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 8px 16px !important;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--text-primary) !important;
    background: var(--bg-tertiary);
}

.navbar-nav .nav-link.active {
    background: var(--accent-primary);
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    color: var(--text-primary);
    overflow: hidden;
}

.hero-image {
    max-width: 100%;
    height: auto;
}

.hero .btn {
    padding: 8px 24px;
    font-size: 16px;
    white-space: nowrap;
    min-width: fit-content;
}

/* Features */
.feature-card {
    background: #1C1D21;
    border: 1px solid #2A2C32;
    border-radius: 16px;
    padding: 24px;
    height: 100%;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #3498db;
}

.feature-card i {
    font-size: 40px;
    color: #3498db;
    margin-bottom: 24px;
}

.feature-card h3 {
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-card p {
    color: #A1A1A1;
    font-size: 15px;
    line-height: 1.6;
}

/* How it works */
.how-it-works {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
}

/* Pricing cards */
.pricing-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px);
}

.pricing-card.featured {
    background: var(--accent-primary);
    position: relative;
    overflow: hidden;
}

.pricing-card.featured:before {
    content: "Популярный";
    position: absolute;
    top: 20px;
    right: -35px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 14px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
}

.pricing-header h3 {
    color: var(--text-primary);
    font-size: 24px;
    margin-bottom: 15px;
}

.pricing-header h2 {
    color: var(--text-primary);
    font-size: 36px;
    margin-bottom: 10px;
}

.pricing-header h2 span {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-header .saving {
    color: #4CAF50;
    font-size: 14px;
    margin-top: 5px;
}

.pricing-features {
    flex-grow: 1;
}

.pricing-features ul {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
}

.pricing-features li {
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
}

.pricing-features li:before {
    content: "✓";
    color: var(--accent-primary);
    position: absolute;
    left: 0;
}

.pricing-card.featured .pricing-features li:before {
    color: var(--text-primary);
}

.pricing-card .btn {
    width: 100%;
    margin-top: auto;
}

/* Buttons */
.btn-primary {
    background: #3498DB;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    width: 100%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    background: #2980B9;
    transform: translateY(-2px);
}

.btn-primary i {
    font-size: 18px;
}

/* Footer styles */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    margin-top: 60px;
}

footer h5 {
    color: #FFFFFF;
    font-weight: 600;
    margin-bottom: 15px;
}

footer p, 
footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--accent-primary);
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    color: #FFFFFF;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    color: white;
    position: relative;
    overflow: hidden;
}

/* Features section */
.features {
    padding: 80px 0;
}

.features h2 {
    font-size: 32px;
    margin-bottom: 48px;
    text-align: center;
}

/* Devices Section */
.devices {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.device-card {
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    margin-bottom: 20px;
    transition: transform 0.3s;
}

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

.device-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.device-card h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
}

/* Setup Section */
.setup-section {
    padding: 50px 0;
    background: var(--bg-primary);
}

.setup-section h1 {
    color: var(--text-primary);
    margin-bottom: 2rem;
}

/* Device Tabs */
.nav-pills {
    gap: 15px;
    flex-wrap: wrap;
}

.nav-pills .nav-link {
    background: var(--bg-secondary);
    border: none;
    border-radius: 10px;
    padding: 15px 25px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.nav-pills .nav-link i {
    font-size: 24px;
}

.nav-pills .nav-link.active {
    background: var(--accent-primary);
    color: white;
}

.nav-pills .nav-link:hover {
    transform: translateY(-5px);
}

/* Protocol Tabs */
.nav-tabs {
    border: none;
    gap: 10px;
}

.nav-tabs .nav-link {
    background: var(--bg-secondary);
    border: none;
    border-radius: 20px;
    padding: 8px 20px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.nav-tabs .nav-link.active {
    background: var(--accent-primary);
    color: white;
}

.nav-tabs .nav-link:hover {
    border: none;
    transform: translateY(-2px);
}

/* Setup Card */
.setup-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
    margin-top: 20px;
}

.setup-card h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
}

.setup-card ol {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 20px;
}

.setup-card li {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
    padding-left: 10px;
}

/* Alert */
.alert {
    background: var(--bg-tertiary);
    border: none;
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert i {
    color: var(--accent-primary);
    font-size: 20px;
}

.alert span {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .device-selector .row {
        gap: 15px;
    }
    
    .device-btn {
        padding: 10px;
    }
    
    .protocol-tabs {
        gap: 10px;
    }
    
    .protocol-btn {
        padding: 8px 15px;
        font-size: 14px;
    }
    
    .protocol-content {
        padding: 20px;
    }
    
    .nav-pills .nav-link {
        padding: 10px 15px;
    }
    
    .nav-pills .nav-link i {
        font-size: 20px;
    }
    
    .nav-tabs .nav-link {
        padding: 6px 15px;
        font-size: 14px;
    }
    
    .setup-card {
        padding: 20px;
    }
    
    .setup-card h3 {
        font-size: 1.2rem;
    }
    
    .setup-card li {
        font-size: 14px;
    }
}

/* Mobile Specific Styles */
@media (max-width: 991.98px) {
    .hero .col-lg-6 img {
        margin-top: 2rem;
        padding: 1rem;
    }
    
    .navbar-collapse {
        padding: 1rem 0;
    }
    
    .navbar-collapse .d-flex {
        justify-content: center;
        margin-top: 1rem;
    }
    
    .navbar-collapse .btn-outline-light {
        width: 200px;
        margin: 0 auto;
        text-align: center;
    }
    
    .hero .btn {
        padding: 6px 20px;
        font-size: 15px;
        width: auto;
    }
}

/* About Section */
.about-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    color: var(--text-secondary);
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.feature-list li:before {
    content: "✓";
    color: var(--accent-primary);
    position: absolute;
    left: 0;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.stat-item h3 {
    color: var(--accent-primary);
    font-size: 2rem;
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Setup Instructions */
.setup-instructions {
    padding: 50px 0;
}

.device-selector {
    margin-bottom: 40px;
}

.device-btn {
    background: var(--bg-secondary);
    border: none;
    border-radius: 10px;
    padding: 15px;
    width: 100%;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.device-btn i {
    font-size: 24px;
}

.device-btn.active {
    background: var(--accent-primary);
    color: white;
}

.device-btn:hover {
    transform: translateY(-5px);
}

/* Device Instructions */
.device-instructions {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.device-instructions.active {
    display: block;
    opacity: 1;
}

/* Protocol Tabs */
.protocol-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.protocol-btn {
    background: var(--bg-secondary);
    border: none;
    border-radius: 20px;
    padding: 10px 20px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.protocol-btn.active {
    background: var(--accent-primary);
    color: white;
}

.protocol-btn:hover {
    transform: translateY(-2px);
}

/* Protocol Content */
.protocol-content {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 30px;
}

.protocol-content.active {
    display: block;
    opacity: 1;
}

.protocol-content h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
}

.protocol-content ol {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 20px;
}

.protocol-content li {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
    padding-left: 10px;
}

/* Locations Section */
.locations {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.location-card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
}

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

.location-card .flag {
    width: 48px;
    height: 48px;
    margin-bottom: 15px;
    border-radius: 50%;
    object-fit: cover;
}

.location-card h4 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 18px;
    font-weight: 600;
}