/* Unit Converter Styles */
:root {
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e9ecef;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 10px;
    --border-radius-lg: 12px;
}

.unit-converter-page {
    padding: 40px 0;
    background: linear-gradient(135deg, #f5f9ff 0%, #e6f0ff 100%);
    min-height: 100vh;
}

/* Tool Header */
.tool-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 0 20px;
}

.tool-header h1 {
    font-size: 2.8rem;
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 800;
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.breadcrumb {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 20px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
}

.breadcrumb a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.breadcrumb .separator {
    color: #bdc3c7;
    margin: 0 5px;
}

/* Converter Container */
.converter-container {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 35px;
    margin: 0 auto 50px;
    max-width: 1200px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.converter-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #3498db, #2980b9);
}

.converter-container:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.converter-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.converter-header h2 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.converter-header h2 i {
    color: var(--primary-color);
    font-size: 1.4em;
}

/* Measurement Type */
.measurement-type {
    margin-bottom: 25px;
    position: relative;
}

.measurement-type-label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

/* Quick Links */
.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 15px 0 25px;
    padding: 0;
}

.quick-links span {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    margin-right: 10px;
}

.quick-link-btn {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 8px 18px;
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.quick-link-btn i {
    font-size: 1.1em;
}

.quick-link-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.25);
}

.quick-link-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-hover);
    color: white;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

/* Converter Body */
.converter-body {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 25px;
    align-items: center;
    margin: 30px 0;
    padding: 30px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.converter-body:hover {
    box-shadow: var(--shadow-sm);
}

/* Input and Output Sections */
.conversion-input,
.conversion-output {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    position: relative;
}

.input-group {
    position: relative;
    width: 100%;
}

.input-group input {
    width: 100%;
    padding: 18px 20px;
    font-size: 1.2rem;
    border: 2px solid #e1e4f5;
    border-radius: var(--border-radius);
    background: var(--bg-white);
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    padding-right: 50px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
    background-clip: padding-box;
    -webkit-background-clip: padding-box;
    position: relative;
    z-index: 1;
}

.input-group input:hover {
    border-color: #cbd5e0;
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2),
                inset 0 1px 2px rgba(0, 0, 0, 0.05);
    outline: none;
    transform: translateY(-1px);
}

.input-group input::placeholder {
    color: #a0aec0;
    opacity: 1;
    font-weight: 400;
}

.input-group input:disabled {
    background-color: #f7fafc;
    cursor: not-allowed;
    opacity: 0.8;
}

/* Floating label effect when input has value */
.input-group input:not(:placeholder-shown) {
    padding-top: 22px;
    padding-bottom: 14px;
}

.input-group input:not(:placeholder-shown) + .floating-label {
    transform: translateY(-10px) scale(0.85);
    opacity: 0.8;
}

.input-group .unit-display {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #5d6d7e;
    font-weight: 500;
    pointer-events: none;
    background: rgba(255, 255, 255, 0.95);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid #d6e0f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 2;
    transition: all 0.2s ease;
    min-width: 40px;
    text-align: center;
}

.input-group:focus-within .unit-display {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.98);
}

/* Floating label */
.floating-label {
    position: absolute;
    left: 20px;
    top: 18px;
    color: #718096;
    font-size: 0.95rem;
    font-weight: 500;
    pointer-events: none;
    transform-origin: left top;
    transition: all 0.2s ease;
    z-index: 2;
    background: white;
    padding: 0 5px;
    margin-left: -5px;
    border-radius: 3px;
}

.input-group:focus-within .floating-label {
    color: var(--primary-color);
    transform: translateY(-22px) scale(0.85);
    background: linear-gradient(to bottom, white 50%, transparent 50%);
    padding: 0 8px;
    margin-left: -8px;
}

/* Input with icon */
.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #a0aec0;
    font-size: 1.1rem;
    transition: color 0.2s ease;
}

.input-with-icon input {
    padding-left: 45px !important;
}

.input-with-icon:focus-within i {
    color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

.unit-selector {
    width: 100%;
    position: relative;
}

.unit-select {
    width: 100%;
    padding: 12px 15px;
    font-size: 1rem;
    border: 2px solid #e1e4f5;
    border-radius: var(--border-radius);
    background-color: var(--bg-white);
    color: var(--text-primary);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237f8c8d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    padding-right: 40px;
    transition: var(--transition);
}

.unit-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
    outline: none;
}

/* Output Value */
.output-value {
    width: 100%;
    min-height: 64px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    padding: 15px 20px;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    border: 2px solid #e1e4f5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.output-value .unit-display {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    margin-left: 10px;
    opacity: 0.8;
}

/* Swap Button */
.swap-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
    position: relative;
    z-index: 2;
}

.swap-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px) rotate(180deg);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.4);
}

.swap-btn i {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.swap-btn:hover i {
    transform: rotate(180deg);
}

/* Conversion Actions */
.conversion-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 2px solid transparent;
}

.btn i {
    font-size: 1.1em;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: rgba(46, 204, 113, 0.1);
    transform: translateY(-2px);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-icon:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(46, 204, 113, 0.3);
}

/* Responsive Design */
@media (max-width: 992px) {
    .converter-container {
        padding: 25px;
    }
    
    .tool-header h1 {
        font-size: 2.4rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .converter-body {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        gap: 20px;
        padding: 25px 20px;
    }
    
    .swap-btn {
        transform: rotate(90deg);
        margin: 0 auto;
        width: 46px;
        height: 46px;
    }
    
    .swap-btn i {
        transform: rotate(90deg);
    }
    
    .conversion-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        padding: 14px 25px;
    }
}

@media (max-width: 576px) {
    .tool-header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .converter-container {
        padding: 20px 15px;
        border-radius: 8px;
    }
    
    .converter-header h2 {
        font-size: 1.4rem;
    }
    
    .quick-links {
        justify-content: center;
    }
    
    .quick-link-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .input-group input,
    .output-value {
        font-size: 1.1rem;
        padding: 16px 15px;
    }
    
    .unit-select {
        padding: 10px 12px;
        font-size: 0.95rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Additional Converters */
#additionalConverters {
    margin: 20px 0;
}

.additional-converter {
    background: #f8f9ff;
    border-radius: 8px;
    padding: 15px;
    margin-top: 15px;
    position: relative;
    animation: fadeIn 0.3s ease-out;
}

.remove-converter {
    position: absolute;
    top: 5px;
    right: 10px;
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    font-size: 1rem;
}

/* Conversion Formula */
.conversion-formula {
    background: #f8f9ff;
    border-radius: 8px;
    padding: 15px;
    margin: 25px 0;
    border-left: 4px solid var(--primary-color);
}

.formula-text {
    font-family: 'Courier New', monospace;
    background: #fff;
    padding: 10px 15px;
    border-radius: 5px;
    margin-top: 10px;
    overflow-x: auto;
}

/* Conversion History */
.conversion-history {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.history-list {
    margin: 15px 0;
    max-height: 300px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    background: #fff;
    border-radius: 6px;
    margin-bottom: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
    transition: all 0.2s ease;
    cursor: pointer;
    border-left: 3px solid var(--primary-color);
}

.history-item:hover {
    transform: translateX(3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.history-item .from {
    color: #6c757d;
}

.history-item .to {
    font-weight: 600;
    color: var(--primary-color);
}

/* Features Section */
.converter-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.feature-card {
    background: #fff;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

/* Unit Categories */
.unit-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.category {
    background: #f8f9ff;
    border-radius: 10px;
    padding: 20px;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.category:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.category h3 {
    color: var(--primary-color);
    margin-top: 0;
    display: flex;
    align-items: center;
    font-size: 1.1rem;
}

.category h3 i {
    margin-right: 10px;
}

/* Select2 Customization */
.select2-container {
    width: 100% !important;
    margin-top: 5px;
}

.select2-container--default .select2-selection--single {
    height: 50px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 5px 10px;
    transition: all 0.3s ease;
    background: #fff;
}

.select2-container--default.select2-container--focus .select2-selection--single,
.select2-container--default.select2-container--open .select2-selection--single {
    border-color: #2ecc71;
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 36px;
    padding-left: 0;
    color: #2c3e50;
    font-weight: 500;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 48px;
    width: 40px;
}

.select2-container--default .select2-selection--single .select2-selection__arrow b {
    border-color: #7f8c8d transparent transparent transparent;
    border-width: 8px 6px 0 6px;
    margin-left: -6px;
    margin-top: -4px;
}

.select2-container--default.select2-container--open .select2-selection--single .select2-selection__arrow b {
    border-color: transparent transparent #2ecc71 transparent;
    border-width: 0 6px 8px 6px;
}

.select2-dropdown {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.select2-results__option {
    padding: 10px 15px;
    font-size: 0.95rem;
    color: #2c3e50;
    transition: all 0.2s ease;
}

.select2-results__option--highlighted[aria-selected] {
    background-color: #2ecc71;
    color: white;
}

.select2-search--dropdown {
    padding: 10px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}

.select2-search--dropdown .select2-search__field {
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 8px 12px;
    width: 100%;
    outline: none;
}

.select2-search--dropdown .select2-search__field:focus {
    border-color: #2ecc71;
    box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.2);
}

.select2-container--default .select2-selection--single {
    height: 46px;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 5px 10px;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 44px;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 36px;
    padding-left: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .converter-body {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .conversion-input,
    .conversion-output {
        flex-direction: column;
        align-items: stretch;
    }
    
    .conversion-actions {
        flex-direction: row;
        justify-content: center;
    }
    
    .unit-categories {
        grid-template-columns: 1fr;
    }
    
    .quick-links {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .quick-links .btn {
        width: 100%;
        text-align: left;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* SEO Content */
.seo-content {
    margin-top: 50px;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    line-height: 1.7;
    color: #444;
}

.seo-content h2 {
    color: #2c3e50;
    margin: 30px 0 20px;
    font-size: 1.8rem;
    position: relative;
    padding-bottom: 10px;
}

.seo-content h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

.seo-content h3 {
    color: #34495e;
    margin: 25px 0 15px;
    font-size: 1.4rem;
}

.seo-content p {
    margin-bottom: 1.2em;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* FAQ Styling */
.faq {
    margin: 30px 0;
}

.faq h3 {
    color: #2c3e50;
    background: #f8f9ff;
    padding: 15px 20px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    margin-bottom: 0;
}

.faq h3:before {
    content: '\f059';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-right: 10px;
    color: var(--primary-color);
}

.faq h3:hover {
    background: #f0f4ff;
}

.faq p {
    padding: 15px 20px 15px 45px;
    margin: 0;
    background: #fff;
    border-radius: 0 0 8px 8px;
    border-left: 2px solid #f0f4ff;
    border-right: 2px solid #f0f4ff;
    border-bottom: 2px solid #f0f4ff;
}