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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

.navbar {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 1.5rem;
}

.nav-links a:hover {
    color: #3498db;
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: white;
    color: #3498db;
    border: 2px solid #3498db;
}

.btn-secondary:hover {
    background: #3498db;
    color: white;
}

.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border: 1px solid #ddd;
    border-radius: 10px;
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #3498db;
}

.pricing {
    padding: 4rem 0;
    background: #f8f9fa;
}

.pricing h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    border: 2px solid #ddd;
}

.pricing-card.featured {
    border-color: #3498db;
    transform: scale(1.05);
}

.pricing-card h3 {
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 1rem;
}

.price span {
    font-size: 1rem;
    color: #666;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-card li {
    padding: 0.5rem 0;
}

.pricing-note {
    text-align: center;
    color: #666;
}

.video {
    padding: 4rem 0;
    text-align: center;
}

.video h2 {
    margin-bottom: 2rem;
}

.auth-form {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    border: 1px solid #ddd;
    border-radius: 10px;
}

.auth-form h2 {
    margin-bottom: 2rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.auth-form button {
    width: 100%;
}

.auth-link {
    text-align: center;
    margin-top: 1rem;
}

.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

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

.alert-error {
    background: #f8d7da;
    color: #721c24;
}

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

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

.dashboard {
    padding: 2rem 0;
}

.dashboard h1 {
    margin-bottom: 2rem;
}

.dashboard-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-card {
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.info-card h3 {
    margin-bottom: 0.5rem;
    color: #3498db;
}

.dashboard-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.devices-section {
    margin-top: 2rem;
}

.devices-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

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

.device-add {
    max-width: 600px;
    margin: 4rem auto;
    padding: 2rem;
    text-align: center;
}

.hwid-display {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
}

.hwid-display code {
    font-size: 1.2rem;
    word-break: break-all;
}

.help-text {
    margin-top: 1rem;
    color: #666;
}

.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}