body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f2f2f7;
    color: #000000;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.iphone-container {
    max-width: 100%;
    margin: 0 auto;
    background-color: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background-color: #007aff;
    color: #ffffff;
    padding: 1rem;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-header h1 {
    font-size: 1.2rem;
    margin: 0;
}

.header-buttons {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
}

.header-buttons .btn {
    margin-left: 0.5rem;
}

.app-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1rem;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.app-navbar {
    display: flex;
    justify-content: space-around;
    background-color: #f2f2f7;
    padding: 0.5rem;
    border-top: 1px solid #d1d1d6;
}

.nav-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #8e8e93;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

.nav-button.active {
    color: #007aff;
}

.card {
    background-color: #ffffff;
    border-radius: 10px;
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
}

.card-header {
    background-color: #ffffff;
    border-bottom: 1px solid #d1d1d6;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-primary {
    background-color: #007aff;
    border-color: #007aff;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #0056b3;
    border-color: #0056b3;
}

.form-control, .form-select {
    border-radius: 8px;
    border-color: #d1d1d6;
}

.form-control:focus, .form-select:focus {
    border-color: #007aff;
    box-shadow: 0 0 0 0.2rem rgba(0, 122, 255, 0.25);
}

.form-range::-webkit-slider-thumb {
    background: #007aff;
}

.form-range::-moz-range-thumb {
    background: #007aff;
}

.form-range::-ms-thumb {
    background: #007aff;
}

.symptom-list {
    margin-top: 1rem;
}

.symptom-item {
    background-color: #ffffff;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.feeling-bar {
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.feeling-bar-fill {
    height: 100%;
    background-color: #007aff;
    transition: width 0.3s ease;
}

.feeling-difference {
    font-weight: bold;
    margin-left: 0.5rem;
}

.feeling-difference.positive {
    color: #34c759;
}

.feeling-difference.negative {
    color: #ff3b30;
}

/* Autocomplete styles */
.autoComplete_wrapper {
    width: 100%;
}

.autoComplete_result {
    border-radius: 8px;
    font-size: 1rem;
    padding: 0.5rem;
}

.autoComplete_highlighted {
    color: #007aff;
    font-weight: bold;
}

.autoComplete_selected {
    background-color: #007aff;
    color: #ffffff;
}

/* Media Queries for iPad and larger screens */
@media (min-width: 768px) {
    .iphone-container {
        max-width: 768px;
        margin: 0 auto;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    }

    .app-header h1 {
        font-size: 1.5rem;
    }

    .card-title {
        font-size: 1.3rem;
    }

    .form-control, .form-select, .btn {
        font-size: 1.1rem;
    }

    .symptom-item {
        padding: 1.5rem;
    }

    .feeling-bar {
        height: 12px;
    }

    .nav-button {
        font-size: 2rem;
    }
}

/* Media Queries for even larger screens */
@media (min-width: 1024px) {
    .iphone-container {
        max-width: 1024px;
    }

    .app-content {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .card {
        width: calc(50% - 0.5rem);
    }

    #symptomList {
        width: 100%;
    }

    .symptom-item {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .symptom-item > * {
        width: calc(50% - 0.5rem);
    }
}