:root {
    --bg-color: #f7f8fa;
    --card-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #e5e7eb;
    --status-bg: #eff6ff;
    --status-text: #4b5563;
    
    --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 8px;
    
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1024px;
    padding: 40px 20px;
    box-sizing: border-box;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 36px;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

/* Main Card */
.main-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 40px;
    border: 1px solid rgba(229, 231, 235, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Tabs */
.tabs-container {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 24px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    border-color: var(--text-tertiary);
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3);
}

/* Search */
.search-container {
    margin-bottom: 30px;
    position: relative;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-container input {
    width: 100%;
    padding: 14px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--text-primary);
    box-sizing: border-box;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: #fafafa;
}

.search-container input:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-container input::placeholder {
    color: var(--text-tertiary);
}

/* Table */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: #fafafa; /* Subtle background for table wrapper */
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background-color: #ffffff;
}

.admin-table th {
    padding: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    background-color: #fafafa;
}

.admin-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
}

.admin-table tbody tr {
    transition: background-color 0.2s;
}

.admin-table tbody tr:hover {
    background-color: #f8fafc;
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

/* Status Badge */
.status-badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--status-bg);
    color: var(--status-text);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
}

/* Date */
.date-text {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
}

/* VK Button */
.vk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
}

.vk-btn:hover {
    background-color: var(--accent-hover);
}

.vk-btn:active {
    transform: scale(0.96);
}

.last-update {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

@media (max-width: 768px) {
    .main-card {
        padding: 20px;
    }
    
    .admin-table th, .admin-table td {
        padding: 15px;
    }
}