/*--------------------------------------------------------------
# Chanakya to Unicode Converter Styles
--------------------------------------------------------------*/
:root {
    --ctu-purple: #8B5CF6;       /* A modern, soft purple */
    --ctu-purple-dark: #7C3AED;  /* Darker purple for hover effects */
    --ctu-light-grey: #F3F4F6;   /* Background for the card */
    --ctu-border-color: #E5E7EB;
    --ctu-text-dark: #111827;
    --ctu-text-light: #4B5563;
    --ctu-white: #FFFFFF;
}

.ctu-converter-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--ctu-white);
    border: 1px solid var(--ctu-border-color);
    border-radius: 16px;
    padding: 2rem;
    max-width: 900px;
    margin: 2rem auto;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.07);
}

.ctu-header {
    text-align: center;
    margin-bottom: 2rem;
}

.ctu-header .fa-book {
    font-size: 2rem;
    color: var(--ctu-purple);
}

.ctu-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0.5rem 0;
    color: var(--ctu-text-dark);
}

.ctu-header p {
    font-size: 1rem;
    color: var(--ctu-text-light);
    margin: 0;
}

.ctu-panels-container {
    display: flex;
    gap: 1.5rem;
    align-items: stretch;
}

.ctu-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ctu-action-panel {
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctu-panel label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ctu-text-dark);
    margin-bottom: 0.75rem;
}

.ctu-panel textarea {
    width: 100%;
    flex-grow: 1;
    padding: 1rem;
    border: 1px solid var(--ctu-border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    line-height: 1.7;
    background-color: var(--ctu-light-grey);
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ctu-panel textarea:focus {
    outline: none;
    border-color: var(--ctu-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
}

#ctu-output {
    background-color: #E5E7EB;
}

#ctu-convert-btn {
    background-color: var(--ctu-purple);
    color: var(--ctu-white);
    border: none;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s, transform 0.2s;
}

#ctu-convert-btn:hover {
    background-color: var(--ctu-purple-dark);
    transform: scale(1.1);
}

#ctu-copy-btn {
    margin-top: 1rem;
    background-color: var(--ctu-light-grey);
    color: var(--ctu-text-dark);
    border: 1px solid var(--ctu-border-color);
    padding: 10px 15px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    align-self: flex-end;
    transition: background-color 0.2s, color 0.2s;
}

#ctu-copy-btn:hover {
    background-color: var(--ctu-text-light);
    color: var(--ctu-white);
}

/* Responsive Design */
@media (max-width: 768px) {
    .ctu-panels-container {
        flex-direction: column;
    }
    .ctu-action-panel {
        margin: 0.5rem 0;
        transform: rotate(90deg);
    }
}