* {
    margin: 0;
    padding: 0;
    box-sizing: fullwidth;
    font-family: 'Varela Round', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dark theme variables (now default) */
/* Define variables directly on html or :root since dark is the only theme */
html {
    --primary-color: #333;
    --primary-color-hover: #000;
    /* Ensuring text colors are light for dark background */
    --text-color: #f5f5f5;       /* Light Grey/White */
    --heading-color: #f5f5f5;    /* Light Grey/White */
    --bg-color: transparent;     /* Keep transparent */
    --card-bg: transparent;    /* Keep transparent */
    --border-color: #444;        /* Darker border for contrast */
    --highlight-color: #ccc;     /* Light Grey for labels */
    --shadow-color: rgba(0, 0, 0, 0.3);
    --accent-color: #fff200;     /* Yellow */
    
    /* Explicitly set default text color */
    color: var(--text-color); 
}

body {
    background-color: var(--bg-color); /* Use transparent variable */
    color: var(--text-color);          /* Inherit from html or set explicitly */
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    background: var(--card-bg); /* Use transparent variable */
    border-radius: 8px;
    /* box-shadow: 0 2px 10px var(--shadow-color); */ /* Removed shadow */
    color: var(--highlight-color);
}

header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    position: relative;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    width: 100%;
    padding: 0;
    position: relative;
}

.header-content {
    text-align: center;
    position: absolute;
    left: 0;
    right: 0;
    top: 15px;
    margin: 0 auto;
    width: 70%;
    z-index: 1;
}

.logo-container {
    flex: 0 0 auto;
    z-index: 2;
}

.logo {
    max-width: 70px;
    height: auto;
    display: block;
}

.logo.clickable {
    cursor: pointer;
    transition: transform 0.2s ease;
}

.logo.clickable:hover {
    transform: scale(1.05);
}

header h1 {
    color: var(--heading-color);
    margin-bottom: 10px;
}

header p {
    color: var(--text-color);
}

.card {
    background: transparent; /* Made transparent */
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--highlight-color);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
    /* Use a slightly visible background for inputs for usability */
    background-color: #1e1e1e; /* Use a dark grey directly or create a variable */ 
    color: var(--text-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

.radio-group {
    display: flex;
    gap: 20px;
}

.radio-option {
    display: flex;
    align-items: center;
}

.radio-option input {
    margin-right: 8px;
}

.radio-option label {
    color: var(--text-color);
    margin-bottom: 0;
}

.btn {
    background-color: var(--primary-color);
    color: white; /* Keep button text white */
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
    margin-top: 10px;
}

.btn:hover {
    background-color: var(--primary-color-hover);
}

.result {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.result h2 {
    margin-bottom: 15px;
    color: var(--heading-color);
}

.price-breakdown {
    margin-bottom: 20px;
}

.price-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

#discount {
    cursor: pointer;
    transition: color 0.3s;
}

#discount:hover {
    color: var(--accent-color);
}

.price-row.total {
    margin-top: 20px;
    border-top: 2px solid #ddd;
    border-bottom: none;
    padding-top: 10px;
    font-weight: bold;
    font-size: 1.1em;
}

#base-price-range, #total-price-range {
    font-weight: bold;
    color: var(--accent-color);
}

[data-theme="dark"] .price-row {
    border-bottom-color: #444;
}

[data-theme="dark"] .price-row.total {
    border-top-color: #555;
}

[data-theme="dark"] #base-price-range, 
[data-theme="dark"] #total-price-range {
    color: var(--accent-color);
}

[data-theme="dark"] #discount:hover {
    color: var(--accent-color);
}

.disclaimer {
    font-size: 0.9em;
    color: var(--highlight-color);
    font-style: italic;
    margin-bottom: 20px;
}

.contact-container {
    text-align: center;
    margin-top: 20px;
}

.contact-container p {
    color: var(--text-color);
}

.contact-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white; /* Keep button text white */
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    margin-top: 10px;
    transition: background-color 0.3s;
}

.contact-btn:hover {
    background-color: var(--primary-color-hover);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .card {
        padding: 20px;
    }
    
    .header-top {
        margin-bottom: 20px;
    }
    
    .header-content {
        position: relative;
        top: auto;
        width: 100%;
        margin-top: 15px;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .header-top {
        margin-bottom: 15px;
    }
    
    .card {
        padding: 15px;
    }
    
    .form-control {
        padding: 10px;
    }
    
    .btn {
        padding: 10px 20px;
    }
}

/* Loading state */
.container.loading:before {
    content: "Loading pricing data...";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 500;
    z-index: 1000;
}

.container.loading:after {
    content: "";
    position: fixed;
    top: calc(50% + 40px);
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1001;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

[data-theme="dark"] .container.loading:before {
    background-color: rgba(32, 32, 32, 0.9);
    color: #fff;
}

[data-theme="dark"] .container.loading:after {
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-top: 5px solid var(--accent-color);
}

/* Unavailable services */
option.unavailable {
    color: #999;
    text-decoration: line-through;
    font-style: italic;
}

/* Service unavailable badge */
.service-unavailable {
    display: inline-block;
    background-color: #ff5252;
    color: white;
    font-size: 0.7rem;
    padding: 2px 5px;
    border-radius: 3px;
    margin-left: 8px;
    vertical-align: middle;
}

/* Input number specific styles for duration field */
input[type="number"] {
    width: 100%;
    box-sizing: border-box;
    appearance: textfield;
    -moz-appearance: textfield; /* Firefox */
}

/* Remove spinner buttons for Chrome, Safari, Edge, Opera */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Mobile responsiveness for form inputs */
@media (max-width: 768px) {
    input[type="number"],
    select.form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 10px;
    }
}

/* Make H1 clickable */
h1.clickable {
    cursor: pointer;
    display: inline-block; /* Prevent cursor change over whole block */
    transition: transform 0.2s ease;
}

h1.clickable:hover {
    transform: scale(1.02); /* Subtle scale effect */
}