/* Uniform styles for all calculators */
.calculator-container {
    background-color: #f5f5f7; /* Light gray background like Apple */
    padding: 20px;
    border-radius: 12px; /* Smooth rounded corners */
    max-width: 400px;
    margin: 20px auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); /* Subtle shadow for depth */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #333;
}

.calculator-container h3 {
    font-size: 1.4em;
    font-weight: 500;
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 10px;
}

.calculator-container h3 i {
    margin-right: 8px;
    color: #0071e3; /* Consistent blue for icons */
}

.calculator-container h4 {
    font-size: 1.2em;
    font-weight: 500;
    color: #333;
    margin-top: 20px;
    margin-bottom: 10px;
}

.calculator-container p {
    font-size: 1em;
    color: #555;
    margin-bottom: 10px;
}

.calculator-container label {
    display: block;
    margin-top: 15px;
    font-weight: 400;
    color: #555;
}

.calculator-container input,
.calculator-container select {
    width: 100%;
    padding: 12px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05); /* Soft inner shadow for depth */
    transition: border-color 0.3s ease;
    font-size: 1em;
}

.calculator-container input:focus,
.calculator-container select:focus {
    border-color: #0071e3; /* Blue focus border */
    outline: none;
}

/* Style for range inputs */
.calculator-container input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    outline: none;
    margin-top: 10px;
    margin-bottom: 15px;
}

.calculator-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #0071e3;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.calculator-container input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #0071e3;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Style for buttons */
.calculator-container button {
    background-color: #0071e3; /* Consistent blue for buttons */
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 113, 227, 0.1); /* Subtle button shadow */
    margin-top: 10px;
}

.calculator-container button:hover {
    background-color: #005bb5; /* Darker blue on hover */
}

/* Style for result sections */
.calculator-container #percentage-result,
.calculator-container #fuel-consumption-result,
.calculator-container #trip-duration-result,
.calculator-container #salary-result,
.calculator-container #water-intake-result,
.calculator-container #sleep-cycle-result,
.calculator-container #conversion-results,
.calculator-container #conversion-history,
.calculator-container #savings-result {
    margin-top: 20px;
    font-size: 1em;
    color: #333;
}

.calculator-container #percentage-result strong,
.calculator-container #fuel-consumption-result strong,
.calculator-container #trip-duration-result strong,
.calculator-container #salary-result strong,
.calculator-container #water-intake-result strong,
.calculator-container #sleep-cycle-result strong,
.calculator-container #conversion-results strong,
.calculator-container #conversion-history strong,
.calculator-container #savings-result strong {
    font-weight: bold;
}

/* Style for lists in results */
.calculator-container ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

.calculator-container ul li {
    margin-bottom: 8px;
    font-size: 1em;
    color: #555;
}

/* Style for tables (e.g., in savings calculator, universal converter) */
.calculator-container table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    font-size: 0.9em;
}

.calculator-container table th,
.calculator-container table td {
    padding: 8px;
    border: 1px solid #e0e0e0;
    text-align: left;
}

.calculator-container table th {
    background-color: #e8ecef;
    font-weight: 500;
    color: #333;
}

.calculator-container table td {
    background-color: #fff;
    color: #555;
}

/* Style for canvas (e.g., charts in savings calculator) */
.calculator-container canvas {
    margin-top: 20px;
    max-width: 100%;
    height: auto;
}

/* Style for copy button (e.g., in daily water intake calculator) */
.calculator-container #copy-result {
    background-color: #28a745; /* Green for copy button */
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 8px;
    font-size: 0.9em;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
}

.calculator-container #copy-result:hover {
    background-color: #218838; /* Darker green on hover */
}

/* Style for calculators list (from my_calculators.php) */
.calculators-list {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background-color: #f5f5f7;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.calculators-list h2 {
    font-size: 1.6em;
    font-weight: 500;
    color: #333;
    margin-bottom: 15px;
}

.calculators-list ul {
    list-style: none;
    padding: 0;
}

.calculators-list ul li {
    margin-bottom: 10px;
}

.calculators-list ul li a {
    color: #0071e3;
    text-decoration: none;
    font-size: 1.1em;
    transition: color 0.3s ease;
}

.calculators-list ul li a:hover {
    color: #005bb5;
    text-decoration: underline;
}