:root {
    --primary-color: #007bff;
    --primary-gradient: linear-gradient(135deg, #007bff 0%, #00d2ff 100%);
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --text-color: #333;
    --bg-color: #f4f6f9;
    --white: #ffffff;
    --border-color: #e9ecef;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.2s ease;
}

a:hover {
    color: #0056b3;
}

/* Header */
header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    color: #555;
    font-weight: 600;
    font-size: 0.95rem;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
}

nav a:hover,
nav a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

main {
    flex: 1;
    padding: 3rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 800;
}

.hero p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.table-responsive {
    overflow-x: auto;
    border-radius: 8px;
}

/* Table */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 10px;
}

th,
td {
    text-align: left;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background-color: #f1f3f5;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 30px;
}

.page-btn {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    background: var(--white);
    cursor: pointer;
    border-radius: 6px;
    font-weight: 500;
    color: #555;
    transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
    background: #e9ecef;
    color: var(--text-color);
    border-color: #dee2e6;
}

.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 123, 255, 0.3);
}

.page-btn:disabled {
    color: #adb5bd;
    cursor: not-allowed;
    background: #f8f9fa;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-http {
    background-color: #e3f2fd;
    color: #1565c0;
}

.badge-https {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.badge-socks5 {
    background-color: #fce4ec;
    color: #c2185b;
}

/* Ad Placeholder */
.ad-banner-placeholder {
    width: 100%;
    max-width: 1200px;
    margin: 40px auto 20px;
    padding: 40px;
    background-color: #e9ecef;
    border: 2px dashed #ced4da;
    border-radius: 8px;
    text-align: center;
    color: #6c757d;
    font-weight: 500;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0;
    text-align: center;
    margin-top: auto;
}

footer p {
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 20px;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .card {
        padding: 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}