:root {
    --primary: #4a6bff;
    --primary-dark: #3a56d4;
    --secondary: #f0f2ff;
    --background: #f8f9ff;
    --card: #ffffff;
    --text: #2d3748;
    --text-light: #718096;
    --border: #e2e8f0;
    --border-radius: 10px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text);
    padding: 0;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px;
}

header {
    text-align: center;
    margin-bottom: 2.5rem;
}

h1 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-size: 2.2rem;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    
    margin: 0 auto;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

.card {
    /*background-color: var(--card);
        border: 1px solid var(--border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
        */

    padding: 1.75rem;
    
    
}

.card:hover {
    /* box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);*/
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title svg {
    width: 1.25rem;
    height: 1.25rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text);
}

input, select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--card);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 107, 255, 0.15);
}

.units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.unit-card {
    background-color: var(--secondary);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    border: 1px solid var(--border);
}

.unit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.unit-name {
    font-weight: 600;
    color: var(--primary-dark);
    font-size: 0.95rem;
}

.unit-value {
    font-family: 'Roboto Mono', monospace;
    background-color: var(--card);
    padding: 0.75rem;
    border-radius: calc(var(--border-radius) - 2px);
    width: 100%;
    border: 1px solid var(--border);
    font-size: 1rem;
    text-align: right;
}

.preview-container {
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-top: 1rem;
    background-color: var(--card);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.preview-text {
    transition: font-size 0.3s ease;
    text-align: center;
    max-width: 100%;
    overflow-wrap: break-word;
}

.responsive-iframe {
    width: 100%;
    
    
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
    
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-light);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--secondary);
    color: var(--primary-dark);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.conversion-info {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--secondary);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--text-light);
}

.conversion-info strong {
    color: var(--text);
}