:root {
    --russian-white: #ffffff;
    --russian-blue: #0039a6;
    --russian-red: #d52b1e;
    --primary-color: #1a237e;
    --secondary-color: #3949ab;
    --accent-color: #d32f2f;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--text-dark);
    overflow-x: hidden;
}

.navbar {
    padding: 0.75rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    text-decoration: none;
}

.brand-subtitle {
    font-size: 0.7rem;
    margin-top: -2px;
    margin-left: 48px;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(135deg, var(--russian-blue) 0%, var(--secondary-color) 100%);
    color: white !important;
}

.hero-section {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--russian-blue) 100%);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.russian-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(to right, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%);
}

.hero-title {
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.hero-badge .badge {
    font-size: 0.9rem;
    font-weight: 500;
}

.search-box {
    max-width: 700px;
    margin: 0 auto;
}

.search-box .form-control {
    font-size: 1.1rem;
}

.search-box .form-control:focus {
    box-shadow: none;
}

.popular-domains .badge {
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.popular-domains .badge:hover {
    background: var(--primary-color) !important;
    color: white !important;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

.features-section {
    margin-top: -20px;
    position: relative;
    z-index: 10;
}

.feature-card {
    background: white;
    border-radius: 1rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.1) 0%, rgba(57, 73, 171, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.stats-section {
    position: relative;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%);
}

.stat-item {
    padding: 1rem;
}

.stat-number {
    line-height: 1.2;
}

.domains-showcase {
    background: white;
}

.domain-card {
    background: var(--bg-light);
    border-radius: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.domain-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(26, 35, 126, 0.15);
}

.domain-extension {
    padding: 1rem;
    background: white;
    border-radius: 0.5rem;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%);
}

.footer {
    background: var(--bg-light);
    border-top: 4px solid;
    border-image: linear-gradient(to right, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%) 1;
}

.flag-stripe {
    width: 4px;
    height: 60px;
    background: linear-gradient(to bottom, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%);
    border-radius: 2px;
}

.footer-link:hover {
    color: var(--primary-color) !important;
}

.brand-link {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.brand-link:hover {
    color: var(--primary-color);
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 4rem 0 3rem;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--russian-white) 0%, var(--russian-white) 33.33%, var(--russian-blue) 33.33%, var(--russian-blue) 66.66%, var(--russian-red) 66.66%, var(--russian-red) 100%);
}

.page-header h1 {
    color: white;
}

.page-header .breadcrumb {
    background: transparent;
    margin-bottom: 0;
}

.page-header .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.page-header .breadcrumb-item.active {
    color: white;
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

.content-section {
    padding: 4rem 0;
}

.info-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--primary-color);
}

.info-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-card ul {
    padding-left: 1.5rem;
}

.info-card ul li {
    margin-bottom: 0.5rem;
    position: relative;
}

.info-card ul li::marker {
    color: var(--primary-color);
}

.query-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.query-box {
    background: white;
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.query-input-group {
    position: relative;
}

.query-input-group .form-control {
    font-size: 1.25rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    border: 2px solid #e0e0e0;
    transition: all 0.3s ease;
}

.query-input-group .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
}

.result-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    margin-top: 2rem;
}

.result-available {
    border: 2px solid #4caf50;
}

.result-unavailable {
    border: 2px solid #f44336;
}

.result-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.result-available .result-icon {
    background: rgba(76, 175, 80, 0.1);
    color: #4caf50;
}

.result-unavailable .result-icon {
    background: rgba(244, 67, 54, 0.1);
    color: #f44336;
}

.domain-type-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.domain-type-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(26, 35, 126, 0.1);
}

.domain-type-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1.25rem;
}

.tips-card {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.05) 0%, rgba(57, 73, 171, 0.05) 100%);
    border-radius: 1rem;
    padding: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.tips-card h5 {
    color: var(--primary-color);
}

.tips-card ul {
    margin-bottom: 0;
}

@media (max-width: 991.98px) {
    .hero-section {
        min-height: 70vh;
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .search-box {
        padding: 1rem !important;
    }
    
    .search-box .btn {
        width: 100%;
        margin-top: 1rem;
        border-radius: 0.5rem !important;
    }
    
    .navbar-collapse {
        background: white;
        padding: 1rem;
        border-radius: 0.5rem;
        margin-top: 1rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .d-flex.align-items-center {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid #e0e0e0;
    }
}

@media (max-width: 575.98px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stat-number {
        font-size: 2rem !important;
    }
    
    .query-box {
        padding: 1.5rem;
    }
    
    .domain-extension span {
        font-size: 2rem !important;
    }
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.suggestion-item {
    background: var(--bg-light);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.suggestion-item:hover {
    background: var(--primary-color);
    color: white;
}