:root {
    --background-color: rgba(206, 178, 18, 0.7);
    --border-color: #333333;
    --text-color: #383838;
    --input-bg: #1a1602;
    --dropdown-bg: #feffa7;
    --input-text: white;
}

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

body {
    background-color: #999999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    font-family: 'Roboto', 'Inter', sans-serif;
}

.mode-switch {
    display: flex;
    margin-bottom: 20px;
    width: 100%;
    max-width: 400px;
    justify-content: center;
    gap: 20px;
}

.mode-switch button {
    background-color: #ccc;
    border: none;
    padding: 8px 15px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 16px;
    transition: background-color 0.3s;
}

.mode-switch button.active {
    background-color: #888;
    color: white;
}

.calculator-container {
    width: 100%;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    display: flex;
    position: relative;
    overflow: hidden;
}

/* Scale styles for horizontal mode */
.scale-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
    cursor: grab;
    touch-action: pan-y;
}

.scale-container:active {
    cursor: grabbing;
}

.scale {
    position: absolute;
    transition: transform 0.3s ease-out;
    user-select: none;
    width: 232px;
    transform: translateY(0);
    left: 0;
    top: 0;
}

/* Scale styles for vertical mode */
.horizontal-scale-container {
    position: relative;
    width: 100%;
    height: 40px;
    overflow: hidden;
    z-index: 1;
    cursor: grab;
    touch-action: pan-x;
    margin-bottom: 20px;
}

.horizontal-scale-container:active {
    cursor: grabbing;
}

.scale-horizontal {
    position: absolute;
    transition: transform 0.3s ease-out;
    user-select: none;
    height: 40px;
    width: 150%;
    object-fit: cover;
    transform: translateX(0);
    left: 0;
}

/* Horizontal Mode Styles */
.horizontal-mode {
    max-width: 1200px;
    height: 550px;
    flex-direction: row;
}

.horizontal-mode .ruler-column {
    width: 232px;
    border-right: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
}

.horizontal-mode .calculator-column {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

/* Vertical Mode Styles */
.vertical-mode {
    max-width: 400px;
    height: auto;
    min-height: 700px;
    flex-direction: column;
    display: none; /* Initially hidden */
}

.vertical-mode .calculator-column {
    padding: 40px 20px 20px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 2;
}

.vertical-calculator {
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.input-group-vertical {
    width: 100%;
    margin-bottom: 20px;
}

.footer {
    margin-top: auto;
    padding: 20px 0 0;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.footer-border {
    width: 100%;
    height: 1px;
    background-color: var(--border-color);
    margin: 10px 0 40px;
}

/* Common Elements Styles */
.header {
    display: flex;
    flex-direction: column;
    position: relative;
}

.title {
    font-family: 'Playfair Display', serif;
    font-size: 96px;
    font-weight: 900;
    margin-bottom: 0;
    line-height: 1;
    color: var(--text-color);
    letter-spacing: -0.22em; /* Negative letter spacing for horizontal mode */
}

.coordinates {
    font-size: 14px;
    margin-bottom: 20px;
    color: var(--text-color);
}

.year-selector {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
}

.year-selector select {
    width: 100%;
    padding: 10px 20px;
    background-color: var(--dropdown-bg);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    color: black;
}

.dropdown-arrow {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.dropdown-arrow img {
    width: 15px;
    height: 10px;
}

.model-selector {
    margin: 30px 0;
    position: relative;
}

.model-selector select {
    width: 100%;
    padding: 15px;
    background-color: var(--dropdown-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    color: black;
}

.calculator {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.input-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.input-box {
    background-color: var(--input-bg);
    padding: 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-right-radius: 8px;
    border-top-left-radius: 8px;
}

.input-box input {
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    color: var(--input-text);
    font-size: 32px;
    text-align: center;
    font-weight: 500;
    outline: none;
    font-family: 'Inter', sans-serif;
}

.unit-selector {
    position: relative;
    background-color: var(--dropdown-bg);
    padding: 10px;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

.unit-selector select {
    width: 100%;
    padding: 5px;
    background: transparent;
    border: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    text-align: center;
    color: black;
    font-family: 'Inter', sans-serif;
}

.unit-selector .dropdown-arrow {
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.equals-sign {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 500;
    margin-top: 20px;
    color: black;
    font-family: 'Inter', sans-serif;
}

/* Input spinner removal */
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none;
    margin: 0;
}

input[type=number] {
    -moz-appearance: textfield;
}

/* Responsive design */
@media (max-width: 768px) {
    .horizontal-mode {
        flex-direction: column;
        height: auto;
    }
    
    .horizontal-mode .ruler-column {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        height: 250px;
    }
    
    .calculator {
        flex-direction: column;
    }
    
    .equals-sign {
        margin: 10px 0;
        align-self: center;
    }
    
    .year-selector {
        position: relative;
        margin-top: 20px;
        align-self: flex-end;
    }
}