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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

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

header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.section {
    display: grid;
    gap: 20px;
}

#auth-section {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.hidden {
    display: none !important;
}

.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.card h2, .card h3 {
    color: #667eea;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

input {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border 0.3s;
}

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

button {
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

button:active {
    transform: translateY(0);
}

.btn-danger {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.user-info {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.user-info h2 {
    color: #667eea;
    flex: 1;
}

.user-info p {
    color: #666;
}

.user-info strong {
    color: #764ba2;
    font-size: 1.2rem;
}

.medida-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    position: relative;
}

.medida-item p {
    margin: 5px 0;
    color: #333;
}

.medida-item .timestamp {
    grid-column: 1 / -1;
    color: #999;
    font-size: 0.9rem;
    font-style: italic;
}

.medida-item button {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-weight: bold;
}

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

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

#consulta-resultado {
    margin-top: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

#consulta-resultado h4 {
    color: #667eea;
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .user-info {
        flex-direction: column;
        align-items: flex-start;
    }
}