/* Reset и базовые стили */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
.header {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu .btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.user-menu .btn:hover {
    background: rgba(255,255,255,0.2);
}

/* Навигация */
.navigation {
    background: white;
    border-bottom: 1px solid #e9ecef;
    padding: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 1rem 1.5rem;
    color: #495057;
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #2c3e50;
    border-bottom-color: #3498db;
    background-color: #ecf0f1;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.content-header {
    margin-bottom: 2rem;
}

.content-header h1 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.breadcrumb {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
    color: #6c757d;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin: 0 0.5rem;
}

.breadcrumb-item a {
    color: #3498db;
    text-decoration: none;
}

/* Cards */
.card {
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    overflow: hidden;
    border: 1px solid #e0e0e0;
}

.card-header {
    background: #fafafa;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e0e0e0;
    font-weight: 600;
    color: #555;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: #fafafa;
    padding: 1rem 1.5rem;
    border-top: 1px solid #e0e0e0;
}

/* Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    flex: 1;
    padding: 0 15px;
}

.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1.5;
}

.btn-primary {
    background: #3498db;
    color: white;
    border: 1px solid #3498db;
}

.btn-primary:hover {
    background: #2980b9;
    border-color: #2980b9;
    transform: none;
    box-shadow: 0 2px 4px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #495057;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid #ced4da;
    border-radius: 5px;
    background-color: #fff;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.25rem;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.table th,
.table td {
    padding: 0.75rem;
    border-bottom: 1px solid #e9ecef;
    text-align: left;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0,0,0,0.02);
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.25rem;
    text-transform: uppercase;
}

.badge-success { background-color: #d4edda; color: #155724; }
.badge-warning { background-color: #fff3cd; color: #856404; }
.badge-danger { background-color: #f8d7da; color: #721c24; }
.badge-info { background-color: #cce7ff; color: #0056b3; }
.badge-secondary { background-color: #e2e3e5; color: #383d41; }

/* Statistics */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 5px;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* Progress bars */
.progress {
    height: 1rem;
    background-color: #e9ecef;
    border-radius: 0.5rem;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #3498db;
    transition: width 0.6s ease;
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
.footer {
    background: #343a40;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
    }
    
    .row {
        flex-direction: column;
    }
    
    .col-2, .col-3, .col-4, .col-6, .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e9ecef;
    }
    
    .card {
        background: #2d3748;
        color: #e9ecef;
    }
    
    .card-header {
        background: #4a5568;
        border-color: #4a5568;
    }
}

/* Utility classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: #6c757d; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

/* Copy address styles */
.copy-address {
    cursor: pointer;
    font-family: 'Courier New', Consolas, monospace;
}

.copy-address:hover {
    color: #3498db;
    text-decoration: underline;
}