* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.hidden {
    display: none;
}

/* Header styles */
.header {
   background-color: #003049;
   position: sticky;
   top: 0;
   z-index: 50;
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
   width: 100%;
}

.header-container {
   max-width: 1280px;
   margin: 0 auto;
   padding: 0 1.5rem;
}

.header-content {
   height: 4rem;
   display: flex;
   justify-content: space-between;
   align-items: center;
}

.logo-section {
   display: flex;
   align-items: center;
}

.logo-link {
   display: flex;
   align-items: center;
   text-decoration: none;
   color: white;
   gap: 0.25rem;
}

.logo-icon {
   font-size: 2rem;
   color: white;
}

.logo-text {
   font-size: 1.25rem;
   font-weight: bold;
}

.beta-badge {
   background-color: #3b82f6;
   padding: 0.25rem 0.5rem;
   border-radius: 9999px;
   font-size: 0.75rem;
   margin-left: 0.5rem;
}

.main-nav {
   display: flex;
   align-items: center;
}

.nav-link {
   display: flex;
   align-items: center;
   color: white;
   text-decoration: none;
   gap: 0.25rem;
   transition: color 0.2s;
}

.nav-link:hover {
   color: #bfdbfe;
}

body {
   background-color: #f5f5f5;
   min-height: 100vh;
   padding-top: 0px;
   margin: 0;
   overflow-x: hidden;
}

/* Container styles */
.container {
   width: 100%;
   max-width: 600px;
   margin: 0 auto;
   padding: 0 20px;
}

/* Calculator wrapper styles */
.calculator-wrapper {
   background: white;
   border-radius: 8px;
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
   padding: 24px;
   position: relative;
   margin-top: 20px;
}

h1 {
   background-color: #fcbf49;
   margin: -24px -24px 24px -24px;
   padding: 16px;
   border-top-left-radius: 8px;
   border-top-right-radius: 8px;
   color: #333;
   font-size: 24px;
   font-weight: 600;
   text-align: center;
}

/* Form styles */
.calculator-form {
    padding: 0;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin-bottom: 6px;
}

.measurement-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr) 2fr;
    gap: 12px;
    align-items: start;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
}

.fraction-group {
    display: flex;
    flex-direction: column;
}

.fraction-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.fraction-divider {
    font-size: 20px;
    color: #333;
    margin: 0 4px;
}

.form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    transition: all 0.2s;
}

.form-input:hover {
    border-color: #003049;
    box-shadow: 0 0 0 3px rgba(0, 48, 73, 0.1);
}

.form-input:focus {
    outline: none;
    border-color: #003049;
    box-shadow: 0 0 0 3px rgba(0, 48, 73, 0.1);
}

.unit-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    transition: all 0.2s;
    appearance: none;
    -webkit-appearance: none;
    padding-right: 36px;
    cursor: pointer;
    color: #333;
    background: white url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23333333' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 12px center;
}

.unit-select:hover {
    border-color: #003049;
    box-shadow: 0 0 0 3px rgba(0, 48, 73, 0.1);
}

.unit-select:focus {
    outline: none;
    border-color: #003049;
    box-shadow: 0 0 0 3px rgba(0, 48, 73, 0.1);
}

#operation.unit-select {
    background-color: #f8fafc;
    border: 2px solid #ddd;
    font-weight: 500;
}

#operation.unit-select:hover {
    border-color: #003049;
    box-shadow: 0 0 0 2px rgba(0, 48, 73, 0.1);
}

#operation.unit-select:focus {
    border-color: #003049;
    background-color: white;
}

/* Button styles */
.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}

.calculate-button {
    padding: 8px 16px;
    background: #003049;
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.calculate-button:hover {
    background: #002038;
}

.reset-button {
    padding: 8px 16px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.reset-button:hover {
    background: #f5f5f5;
    border-color: #003049;
}

/* Results section */
.results {
    background: linear-gradient(to bottom right, #f0f9ff, #e0f2fe);
    border: 1px solid #bae6fd;
    border-radius: 4px;
    padding: 16px;
    margin-top: 24px;
}

.results-header {
    margin-bottom: 16px;
}

.results-title {
    font-size: 18px;
    color: #003049;
    margin: 0;
    font-weight: 600;
    padding-bottom: 8px;
    border-bottom: 2px solid #bae6fd;
}

.results-content {
    padding: 8px 0;
}

.results-section {
    margin-bottom: 16px;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.results-item {
    background: rgba(255, 255, 255, 0.5);
    padding: 8px 12px;
    border-radius: 4px;
    color: #003049;
}

.results-value {
    font-weight: 600;
    float: right;
}

.results-value.exact {
    color: #666;
    font-style: italic;
}

/* FAQ Section Styles */
.faq-container {
   margin: 32px auto;
   padding: 24px;
   background: white;
   border-radius: 8px;
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
   max-width: 600px;
}

.faq-title {
    color: #003049;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    text-align: center;
}

.faq-grid {
    display: grid;
    gap: 24px;
}

.faq-item {
    background: linear-gradient(to bottom right, #f8fafc, #f1f5f9);
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 16px;
}

.faq-question {
    color: #003049;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.faq-answer {
    color: #334155;
    font-size: 16px;
    line-height: 1.5;
}

.faq-answer p {
    margin-bottom: 12px;
}

.faq-answer ul {
    list-style-type: none;
    padding-left: 0;
}

.faq-answer ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 8px;
}

.faq-answer ul li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: #003049;
}

/* Remove number input spinners */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

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

/* Media queries */
@media (max-width: 640px) {
    .header-container {
        padding: 0 1rem;
    }
   
    .logo-text {
        font-size: 1rem;
    }
   
    .beta-badge {
        font-size: 0.625rem;
        padding: 0.125rem 0.375rem;
    }
   
    .header-content {
        height: 3.5rem;
    }

    .calculator-wrapper {
        padding: 16px;
    }
   
    h1 {
        margin: -16px -16px 16px -16px;
        font-size: 20px;
    }
    
    .container {
        margin: 0;
        padding: 0 16px;
        max-width: 100%;
    }
    
    .measurement-group {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    
    .fraction-group {
        grid-column: span 2;
    }
    
    .fraction-inputs {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        gap: 8px;
        align-items: center;
    }
    
    .results-grid {
        gap: 8px;
    }
    
    .results-item {
        padding: 12px;
    }

    .button-group {
        grid-template-columns: 1fr;
    }

    .faq-container {
        padding: 16px;
		margin-top: 24px;
    }
}

@media (max-width: 480px) {
    .header {
        position: fixed;
        width: 100%;
    }
   
    body {
        padding-top: 3.5rem;
        overflow-x: hidden;
    }
   
    .logo-icon {
        font-size: 1.5rem;
    }

    .container {
        padding: 0;
		margin: 0;
		max-width: 100%;
    }

    .calculator-wrapper {
        margin: 16px;
    }

    .faq-container {
        margin: 16px;
    }
}