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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    min-height: 100vh;
    color: #e2e8f0;
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 40px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    border-bottom: 2px solid #60a5fa;
}

.header h1 {
    color: #60a5fa;
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 0 0 20px rgba(96, 165, 250, 0.5);
}

.header p {
    color: #94a3b8;
    font-size: 1.2em;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.card {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 15px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    border: 1px solid #475569;
}

h2 {
    color: #60a5fa;
    font-size: 2em;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

h3 {
    color: #93c5fd;
    font-size: 1.5em;
    margin: 25px 0 15px 0;
}

h4 {
    color: #cbd5e1;
    font-size: 1.1em;
    margin-bottom: 8px;
}

p {
    color: #cbd5e1;
    margin-bottom: 15px;
}

ul {
    margin: 15px 0 15px 40px;
    color: #cbd5e1;
}

li {
    margin: 8px 0;
}

a {
    color: #60a5fa;
    text-decoration: none;
    transition: all 0.3s;
}

a:hover {
    color: #93c5fd;
    text-shadow: 0 0 10px rgba(96, 165, 250, 0.5);
}

code {
    background: rgba(15, 23, 42, 0.8);
    padding: 2px 8px;
    border-radius: 4px;
    color: #22d3ee;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.step {
    background: rgba(30, 41, 59, 0.6);
    padding: 20px;
    margin: 15px 0;
    border-right: 4px solid #60a5fa;
    border-radius: 8px;
    border: 1px solid #334155;
}

.step-number {
    display: inline-block;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    text-align: center;
    line-height: 30px;
    margin-left: 10px;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(96, 165, 250, 0.4);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.feature-item {
    background: rgba(30, 41, 59, 0.6);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid #334155;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.3);
    border-color: #60a5fa;
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

.warning-box {
    background: rgba(180, 83, 9, 0.2);
    border-right: 4px solid #f59e0b;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    border: 1px solid #f59e0b;
}

.success-box {
    background: rgba(16, 185, 129, 0.2);
    border-right: 4px solid #10b981;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    border: 1px solid #10b981;
}

.button-group {
    text-align: center;
    margin: 30px 0;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    padding: 15px 30px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    margin: 10px 5px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.6);
    color: white;
    text-shadow: none;
}

.footer {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 30px 20px;
    text-align: center;
    margin-top: 50px;
    border-top: 2px solid #60a5fa;
}

.footer p {
    margin: 10px 0;
    color: #94a3b8;
}

.footer-links {
    font-size: 0.9em;
}

.footer a {
    color: #60a5fa;
    font-weight: bold;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    .card {
        padding: 20px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}
