:root {
    --editor-bg: #1e1e1e;
    --editor-text: #d4d4d4;
    --line-number-color: #858585;
    --cursor-color: #aeafad;
    --keyword-color: #569cd6;
    --variable-color: #9cdcfe;
    --string-color: #ce9178;
    --operator-color: #d4d4d4;
    --function-color: #dcdcaa;
    --class-color: #4ec9b0;
    --comment-color: #6a9955;
    --punctuation-color: #d4d4d4;
    --active-line-bg: #2c2c2c;
    --selection-bg: #264f78;
    --button-bg: #0e639c;
    --button-hover: #1177bb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cascadia Code', 'Fira Code', 'Consolas', 'Courier New', monospace;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #252526;
    color: var(--editor-text);
    padding: 20px;
}

.container {
    background-color: var(--editor-bg);
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 650px;
    overflow: hidden;
}

.editor-header {
    background-color: #323233;
    padding: 10px 15px;
    display: flex;
    align-items: center;
}

.window-controls {
    display: flex;
    gap: 8px;
    margin-right: 15px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red { background-color: #ff5f56; }
.yellow { background-color: #ffbd2e; }
.green { background-color: #27c93f; }

.title-text {
    font-size: 14px;
    color: #abb2bf;
}

h1 {
    text-align: center;
    margin: 25px 0 20px;
    font-size: 1.2rem;
    font-weight: normal;
}

.keyword { color: var(--keyword-color); }
.variable { color: var(--variable-color); }
.operator { color: var(--operator-color); }
.function { color: var(--function-color); }
.class { color: var(--class-color); }
.punctuation { color: var(--punctuation-color); }

.editor-section {
    display: flex;
    margin: 10px 0;
    padding: 10px;
    background-color: var(--active-line-bg);
}

.line-numbers {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-right: 15px;
    color: var(--line-number-color);
    font-size: 14px;
    min-width: 30px;
}

.form-container, .qr-container {
    flex: 1;
}

#qr-text {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--editor-bg);
    color: var(--string-color);
    border: 1px solid #3a3a3a;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
}

#qr-text::placeholder {
    color: var(--comment-color);
}

.options-container {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.option-group {
    flex: 1;
}

.option-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--variable-color);
    font-size: 14px;
}

select {
    width: 100%;
    padding: 8px 10px;
    background-color: var(--editor-bg);
    color: var(--editor-text);
    border: 1px solid #3a3a3a;
    border-radius: 4px;
    font-size: 14px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: var(--button-bg);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

button:hover:not(:disabled) {
    background-color: var(--button-hover);
}

button:disabled {
    background-color: #3a3a3a;
    cursor: not-allowed;
    opacity: 0.7;
}

.result-section {
    min-height: 400px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#qr-code {
    padding: 15px;
    background-color: var(--editor-bg);
    border-radius: 4px;
    margin-bottom: 20px;
}

.download-container {
    width: 100%;
}

.pixel-block {
    background-color: black;
    position: absolute;
    transition: opacity 0.1s ease;
    opacity: 0;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .options-container {
        flex-direction: column;
        gap: 10px;
    }
    
    h1 {
        font-size: 1rem;
    }
}