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

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

.container {
    width: 100%;
    max-width: 400px;
}

.view {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.hidden {
    display: none !important;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e1e1;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s;
}

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

.btn {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
    margin-top: 20px;
}

.btn-success:hover {
    box-shadow: 0 4px 15px rgba(56, 239, 125, 0.4);
}

.btn-secondary {
    background: #f0f0f0;
    color: #666;
    margin-top: 30px;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.error {
    color: #e74c3c;
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
}

.tracker-content {
    text-align: center;
}

.dose-label {
    color: #666;
    font-size: 16px;
    margin-bottom: 10px;
}

.dose-date {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.dose-date.today {
    color: #11998e;
}

.dose-side {
    font-size: 24px;
    font-weight: 600;
    color: #764ba2;
    text-transform: capitalize;
    margin-bottom: 10px;
}