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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
}

/* Login Page Styles */
.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 400px;
    margin: 0 auto;
}

.login-box h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
}

.login-box p {
    color: #666;
    margin-bottom: 30px;
}

.login-box input[type="text"] {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    margin-bottom: 20px;
    transition: border-color 0.3s;
}

.login-box input[type="text"]:focus {
    outline: none;
    border-color: #667eea;
}

.login-box button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.login-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

/* Dashboard Styles */
.dashboard-layout {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.main-content {
    flex: 1;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 30px;
}

.sidebar {
    width: 350px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 25px;
}

.sidebar h2 {
    color: #333;
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e0e0e0;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.header h1 {
    color: #333;
    font-size: 28px;
}

.header p {
    color: #666;
    margin-top: 5px;
}

.header button {
    padding: 10px 20px;
    background: #f44336;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.header button:hover {
    background: #d32f2f;
}

.fingerprint-section {
    margin-bottom: 30px;
}

.fingerprint-section h2 {
    color: #333;
    font-size: 22px;
    margin-bottom: 15px;
}

.hash-display {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 18px;
    word-break: break-all;
    text-align: center;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.details-section h2 {
    color: #333;
    font-size: 22px;
    margin-bottom: 15px;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

.detail-item {
    background: #f5f5f5;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.detail-label {
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
    font-size: 14px;
}

.detail-value {
    color: #666;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    word-break: break-word;
}

/* Modal Dialog Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    text-align: center;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h2 {
    color: #333;
    margin-bottom: 15px;
    font-size: 24px;
}

.modal-content p {
    color: #666;
    margin-bottom: 10px;
    line-height: 1.5;
}

.modal-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    justify-content: center;
}

.modal-buttons button {
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-cancel {
    background: #e0e0e0;
    color: #333;
}

.btn-cancel:hover {
    background: #bdbdbd;
}

.btn-enroll {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-enroll:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

/* Form elements in modal */
.form-group {
    margin: 20px 0;
    text-align: left;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: bold;
    margin-bottom: 8px;
}

.device-input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.device-input:focus {
    outline: none;
    border-color: #667eea;
}

/* Device List Styles */
.device-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    background: #f5f5f5;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.device-info {
    flex: 1;
}

.device-name {
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.device-date {
    font-size: 12px;
    color: #666;
}

.btn-unenroll {
    padding: 8px 16px;
    background: #f44336;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-unenroll:hover {
    background: #d32f2f;
}

.no-devices, .error {
    text-align: center;
    color: #666;
    padding: 20px;
    font-style: italic;
}

.error {
    color: #f44336;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .details-grid {
        grid-template-columns: 1fr;
    }

    .hash-display {
        font-size: 14px;
    }

    .modal-content {
        margin: 20px;
        max-width: 90%;
    }

    .modal-buttons {
        flex-direction: column;
    }

    .modal-buttons button {
        width: 100%;
    }
}