* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(30, 144, 255, 0.2);
}

.logo {
    display: flex;
    align-items: center;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1e90ff 0%, #0066cc 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: white;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(30, 144, 255, 0.3);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #1e3a8a;
}

.user-nav {
    display: flex;
    gap: 15px;
}

.nav-btn {
    padding: 10px 20px;
    background: white;
    border-radius: 8px;
    text-decoration: none;
    color: #1e90ff;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 144, 255, 0.2);
}

.nav-btn:hover {
    background: #1e90ff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(30, 144, 255, 0.3);
}

.hero {
    text-align: center;
    padding: 40px 0;
    margin-bottom: 40px;
}

.hero-title {
    font-size: 42px;
    color: #1e3a8a;
    margin-bottom: 15px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 18px;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto 30px;
    line-height: 1.6;
}

.status-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
    border: 1px solid rgba(30, 144, 255, 0.1);
    position: relative;
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.status-title {
    font-size: 24px;
    color: #1e3a8a;
    font-weight: 600;
}

.status-badge {
    padding: 8px 16px;
    background: #e0f2ff;
    color: #1e90ff;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.number-card {
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
    border-left: 4px solid #1e90ff;
    transition: all 0.3s ease;
}

.number-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.number-id {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 5px;
}

.number-value {
    font-size: 20px;
    font-weight: 600;
    color: #1e3a8a;
    margin-bottom: 10px;
}

.number-status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.number-status.online {
    background: #10b981;
    color: white;
}

.number-status.offline {
    background: #ef4444;
    color: white;
}

.last-online {
    font-size: 12px;
    color: #64748b;
    margin-top: 5px;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 144, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1e90ff 0%, #0066cc 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    color: #1e3a8a;
    margin-bottom: 15px;
}

.feature-desc {
    color: #64748b;
    font-size: 15px;
    line-height: 1.6;
}

.login-prompt {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
    border: 1px solid rgba(30, 144, 255, 0.1);
}

.login-title {
    font-size: 24px;
    color: #1e3a8a;
    margin-bottom: 15px;
}

.login-desc {
    color: #64748b;
    margin-bottom: 25px;
    font-size: 16px;
}

.login-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn-primary {
    padding: 12px 30px;
    background: #1e90ff;
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(30, 144, 255, 0.3);
}

.btn-secondary {
    padding: 12px 30px;
    background: white;
    color: #1e90ff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid #1e90ff;
}

.btn-secondary:hover {
    background: #f0f8ff;
    transform: translateY(-2px);
}

footer {
    text-align: center;
    margin-top: 50px;
    padding: 20px;
    color: #64748b;
    font-size: 14px;
    border-top: 1px solid rgba(30, 144, 255, 0.2);
}

@media (max-width: 768px) {
    .features {
        grid-template-columns: 1fr;
    }
    
    .numbers-grid {
        grid-template-columns: 1fr;
    }
    
    .login-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .status-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .status-badge {
        align-self: flex-start;
    }
}