/* Base styles and variables */
:root {
    --primary: #006D77;
    --secondary: #FF6B35;
    --neutral: #F8F9FA;
    --dark: #1A2A36;
    --accent: #83C5BE;
    --gray: #E0E0E0;
    --light: #FFFFFF;
    --primary-light: rgba(0, 109, 119, 0.1);
    --secondary-light: rgba(255, 107, 53, 0.1);
    --shadow: rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--dark);
    background-color: var(--neutral);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.2rem;
}

p {
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary);
}

/* Header styles */
header {
    background-color: var(--light);
    box-shadow: 0 2px 5px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    display: flex;
    align-items: center;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--dark);
}

.logo-icon {
    font-size: 1.8rem;
    margin-right: 10px;
}

.logo-text .highlight {
    color: var(--primary);
}

.main-nav {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    color: var(--dark);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.main-nav a:hover {
    color: var(--primary);
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: white;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    display: flex;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.search-box input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 1rem;
    outline: none;
}

.search-box button {
    background-color: var(--secondary);
    color: white;
    border: none;
    padding: 0 30px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-box button:hover {
    background-color: darken(var(--secondary), 10%);
}

.categories-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* Changed to exactly 4 columns */
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

/* Hero section categories - restore original styling */
.categories-preview .category {
    background-color: rgba(255, 255, 255, 0.2); /* Restore original background */
    padding: 20px;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
    cursor: pointer;
}

/* Apply pastel colors to the icons only, not the background */
.categories-preview .category:nth-child(1) i { /* Automotive */
    color: #2E7D32;
    background-color: transparent; /* Remove background */
    padding: 0; /* Remove padding */
}
.categories-preview .category:nth-child(2) i { /* Construction */
    color: #2D936C;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(3) i { /* Conversion */
    color: #1976D2;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(4) i { /* Cooking */
    color: #BF360C;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(5) i { /* Electrical */
    color: #FFA000;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(6) i { /* Financial */
    color: #6A1B9A;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(7) i { /* Health */
    color: #E65100;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(8) i { /* Math */
    color: #0288D1;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(9) i { /* Pets */
    color: #00838F;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(10) i { /* Science */
    color: #7B1FA2;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(11) i { /* Time & Date */
    color: #558B2F;
    background-color: transparent;
    padding: 0;
}
.categories-preview .category:nth-child(12) i { /* Video */
    color: #C62828;
    background-color: transparent;
    padding: 0;
}

.categories-preview .category i {
    font-size: 2rem; /* Restore original font size */
    margin-bottom: 10px;
    display: inline-block; /* Change from flex to inline-block */
    height: auto; /* Remove fixed height */
    width: auto; /* Remove fixed width */
}

.categories-preview .category:hover {
    background-color: var(--light);
    transform: translateY(-5px);
    color: var(--primary);
}

.category {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
    cursor: pointer;
}

.category:hover {
    background-color: var(--light);
    transform: translateY(-5px);
    color: var(--primary);
}

.category i {
    font-size: 2rem;
    margin-bottom: 10px;
}

/* Intro section */
.intro {
    background-color: var(--light);
    padding: 40px 0;
    text-align: center;
}

.intro p {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* Featured calculator */
.featured {
    padding: 60px 0;
    background-color: var(--neutral);
}

.featured h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.featured > .container > p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2rem;
}

.calculator-card {
    background-color: var(--light);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px var(--shadow);
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
}

.calculator-form, .calculator-results {
    padding: 30px;
    flex: 1 1 300px;
}

.calculator-form {
    background-color: var(--primary-light);
}

.input-group {
    display: flex;
    margin-bottom: 20px;
}

.input-group input {
    flex: 2;
    padding: 12px;
    border: 1px solid var(--gray);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 1rem;
}

.input-group select {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--gray);
    border-left: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-size: 1rem;
    background-color: var(--light);
}

#convert-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
    font-weight: 600;
}

#convert-btn:hover {
    background-color: darken(var(--primary), 10%);
}

.results-group {
    margin-bottom: 25px;
    background-color: var(--neutral);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: inset 0 0 5px var(--shadow);
}

.results-group h4 {
    margin-bottom: 15px;
    color: var(--primary);
    border-bottom: 1px solid var(--gray);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
}

.results-group h4 i {
    margin-right: 8px;
    color: var(--secondary);
}

.result-item {
    margin-bottom: 15px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.result-label {
    font-weight: 600;
}

.result-value {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.1rem;
    color: var(--dark);
    font-weight: 600;
    background-color: var(--light);
    padding: 2px 8px;
    border-radius: 4px;
    min-width: 80px;
    text-align: right;
    box-shadow: 0 1px 3px var(--shadow);
    transition: all 0.3s ease;
}

.result-bar-container {
    height: 8px;
    background-color: var(--gray);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.result-bar {
    height: 100%;
    width: 0;
    transition: width 0.8s ease;
}

.result-bar.imperial {
    background: linear-gradient(to right, var(--accent), var(--primary));
}

.result-bar.metric {
    background: linear-gradient(to right, var(--secondary-light), var(--secondary));
}

.copy-results {
    text-align: center;
    margin-top: 20px;
}

#copy-results-btn {
    background-color: var(--neutral);
    border: 1px solid var(--gray);
    padding: 8px 15px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    color: var(--dark);
}

#copy-results-btn:hover {
    background-color: var(--primary-light);
    color: var(--primary);
}

#copy-results-btn i {
    margin-right: 5px;
}

.result-value.highlight {
    transform: scale(1.05);
    background-color: var(--primary-light);
    box-shadow: 0 2px 5px var(--shadow);
}

.calculator-info {
    margin-top: 40px;
    background-color: var(--light);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px var(--shadow);
}

/* Calculator form additions */
.calculator-tips {
    margin-top: 25px;
    border-top: 1px dashed var(--gray);
    padding-top: 20px;
}

.calculator-tips h4 {
    color: var(--primary);
    margin: 15px 0 10px;
    font-size: 1rem;
}

.calculator-tips h4:first-child {
    margin-top: 5px;
}

.calculator-tips ul {
    list-style-type: none;
    padding-left: 5px;
}

.calculator-tips ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--dark);
}

.calculator-tips ul li:before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary);
}

.conversion-example {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.conversion-example span {
    background-color: rgba(255, 255, 255, 0.5);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
}

.calculator-hint {
    display: flex;
    align-items: flex-start;
    background-color: var(--secondary-light);
    padding: 10px;
    border-radius: var(--border-radius);
    margin-top: 15px;
}

.calculator-hint i {
    color: var(--secondary);
    margin-right: 10px;
    margin-top: 2px;
}

.calculator-hint p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* About section */
.about {
    padding: 60px 0;
    background-color: var(--primary-light);
    text-align: center;
}

.about h2 {
    margin-bottom: 2rem;
}

.about p {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Popular calculators */
.popular {
    padding: 60px 0;
    background-color: var(--light);
}

.popular h2, .popular > p {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.popular > p {
    margin-bottom: 3rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.category-column {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 3px solid transparent;
}

.category-column:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.category-column h3 {
    color: var(--primary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

/* Category icon styling in the grid - keep circle white but color the icon */
.category-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-right: 12px;
    position: relative;
    background-color: #f8f9fa; /* Light neutral background for all circles */
}

/* Target Font Awesome icons specifically for better centering */
.category-icon i,
.category-icon .fas,
.category-icon .far,
.category-icon .fab {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    line-height: 0;
}

/* Fix the specific positioning for various icon types */
.category-icon.construction i { margin-top: 0; }
.category-icon.financial i { margin-top: 0; margin-left: -1px; }
.category-icon.pets i { margin-top: 1px; }
.category-icon.video i { margin-top: 0; }
.category-icon.time i { margin-top: 0; }
.category-icon.science i { margin-top: 0; }

/* Pastel colors for category icons - apply to the icon only, not the background */
.category-icon.construction i {
    color: #2D936C;
}

.category-icon.conversion i {
    color: #1976D2;
}

.category-icon.financial i {
    color: #6A1B9A;
}

.category-icon.health i {
    color: #E65100;
}

.category-icon.automotive i {
    color: #2E7D32;
}

.category-icon.cooking i {
    color: #BF360C;
}

.category-icon.electrical i {
    color: #FFA000;
}

.category-icon.math i {
    color: #0288D1;
}

.category-icon.science i {
    color: #7B1FA2;
}

.category-icon.pets i {
    color: #00838F;
}

.category-icon.time i {
    color: #558B2F;
}

.category-icon.video i {
    color: #C62828;
}

.category-column:hover .category-icon.construction {
    background-color: #2D936C;
}

.category-column:hover .category-icon.conversion {
    background-color: #1976D2;
}

.category-column:hover .category-icon.financial {
    background-color: #6A1B9A;
    color: white;
}

.category-column:hover .category-icon.health {
    background-color: #E65100;
    color: white;
}

.category-column:hover .category-icon.automotive {
    background-color: #2E7D32;
    color: white;
}

.category-column:hover .category-icon.cooking {
    background-color: #BF360C;
    color: white;
}

.category-column:hover .category-icon.electrical {
    background-color: #FFA000;
    color: white;
}

.category-column:hover .category-icon.math {
    background-color: #0288D1;
    color: white;
}

.category-column:hover .category-icon.science {
    background-color: #7B1FA2;
    color: white;
}

.category-column:hover .category-icon.pets {
    background-color: #00838F;
    color: white;
}

.category-column:hover .category-icon.time {
    background-color: #558B2F;
    color: white;
}

.category-column:hover .category-icon.video {
    background-color: #C62828;
    color: white;
}

.category-column:hover .category-icon i {
    color: white; /* All icons turn white on hover */
}

.category-column ul {
    list-style: none;
    padding-left: 10px;
}

.category-column li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 18px;
}

.category-column li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-size: 18px;
    line-height: 1;
}

.category-column li a {
    color: var(--dark);
    transition: color 0.2s ease, transform 0.2s ease;
    display: inline-block;
}

.category-column li a:hover {
    color: var(--secondary);
    transform: translateX(3px);
}

.category-column li:last-child {
    margin-top: 15px;
}

.category-column li:last-child a {
    color: var(--primary);
    font-weight: 600;
}

.category-column li:last-child::before {
    content: "→";
    margin-right: 4px; /* Add spacing between arrow and "See all" text */
}

@media screen and (max-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--light);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h4 {
    color: var(--light);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: var(--gray);
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--secondary);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.footer-logo .logo-icon {
    font-size: 1.8rem;
    margin-right: 10px;
    line-height: 1; /* Added to fix vertical alignment */
}

.footer-logo .logo-text {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--light);
    line-height: 1.2; /* Added to fix vertical alignment */
    display: inline-block; /* Added to keep text together */
}

.footer-logo .highlight {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    list-style: none;
}

.footer-links li {
    margin-left: 20px;
}

/* Responsive styles */
@media screen and (max-width: 768px) {
    .header-container {
        flex-direction: column;
    }
    
    .main-nav {
        margin-top: 20px;
    }
    
    .main-nav li {
        margin: 0 10px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .calculator-card {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        margin-top: 15px;
        justify-content: center;
    }
    
    .footer-links li {
        margin: 0 10px;
    }
    
    .categories-preview {
        grid-template-columns: repeat(2, 1fr); /* 2 columns on tablets */
    }

    .conversion-example {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .main-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav li {
        margin: 5px 10px;
    }
    
    .categories-preview {
        grid-template-columns: 1fr; /* 1 column on mobile */
    }
}

/* Updated Results Section */
.precision-toggle {
    text-align: right;
    margin-bottom: 15px;
}

#precision-toggle-btn {
    background-color: var(--neutral);
    border: 1px solid var(--gray);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

#precision-toggle-btn:hover {
    background-color: var(--primary-light);
}

#precision-toggle-btn i {
    margin-left: 6px;
}

.combined-result {
    background-color: var(--primary-light);
    padding: 15px;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: 15px;
    font-family: 'Roboto Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    border: 1px dashed var(--primary);
}

.results-section {
    background-color: var(--neutral);
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    box-shadow: 0 2px 4px var(--shadow);
}

.results-section h4 {
    margin-bottom: 12px;
    color: var(--primary);
    border-bottom: 1px solid var(--gray);
    padding-bottom: 8px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.result-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.result-label {
    font-weight: 600;
    color: var(--dark);
}

.result-value {
    font-family: 'Roboto Mono', monospace;
    font-weight: 500;
    min-width: 100px;
    text-align: right;
}

.copy-results {
    text-align: center;
    margin-top: 20px;
}

#copy-results-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 2px 5px var(--shadow);
}

#copy-results-btn:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

#copy-results-btn i {
    margin-right: 5px;
}