:root {
    --primary-color: #2a9b7d;
    --secondary-color: #5f6d7a;
    --accent-color: #34d399;
    --warning-color: #f43f5e;
    --background-light: #f4f7f9;
    --text-dark: #2c3e50;
    --border-color: #e0e4e8;
    --white: #ffffff;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #009e6f 0%, #015b31 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background-color: var(--white);
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 1200px;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(74, 144, 226, 0.1) 0%, transparent 70%);
    z-index: 1;
    pointer-events: none;
}

.page-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
    font-weight: 700;
    letter-spacing: -1px;
    position: relative;
    z-index: 2;
}

.form-section, .form-group {
    margin-bottom: 25px;
    position: relative;
    z-index: 2;
}

.form-label, label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--secondary-color);
}

.input-field, input, select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: all var(--transition-speed);
    font-family: 'Inter', sans-serif;
}

.input-field:focus, input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.input-field.error, input.error, select.error {
    border-color: var(--warning-color);
}

.error-message {
    color: var(--warning-color);
    font-size: 0.8em;
    margin-top: 5px;
    display: none;
}

.symptoms-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

.symptom-category {
    margin-bottom: 20px;
}

.category-title {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.symptom-button, .medical-history-button {
    background-color: var(--background-light);
    border: 2px solid var(--border-color);
    border-radius: 100px;
    padding: 12px 15px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.symptom-button:hover, .medical-history-button:hover {
    transform: scale(1.05);
}

.symptom-button.selected, .medical-history-button.selected {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.analyze-button, .analyze {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 15px 20px;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all var(--transition-speed);
    box-shadow: 0 6px 15px rgba(52, 211, 153, 0.3);
}

.analyze-button:hover, .analyze:hover {
    background-color: #2dd4bf;
    transform: translateY(-3px);
}

#loading {
    display: none;
    text-align: center;
    color: var(--primary-color);
    padding: 20px;
}

#results {
    display: none;
    margin-top: 20px;
    background-color: var(--background-light);
    padding: 20px;
    border-radius: 10px;
}

.disclaimer {
    margin-top: 20px;
    background-color: #fff3cd;
    border: 3px solid #ffeeba;
    color: #856404;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.9em;
}