/* File: css/ex_converter_page.css */

:root {
    --primary-color: #007bff;
    --primary-color-dark: #0056b3;
    --secondary-color: #6c757d;
    --secondary-color-dark: #5a6268;
    --success-color: #28a745;
    --success-color-dark: #218838;
    --danger-color: #dc3545;
    --background-color: #f4f7f9;
    --surface-color: #ffffff;
    --text-dark: #212529;
    --text-medium: #495057;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --font-family: 'Be Vietnam Pro', sans-serif;

    /* Màu đặc trưng cho review (từ quiz-parser.css) */
    --gas-question-number-color: #e44d26; 
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    display: flex;
    min-height: 100vh;
}

#app-converter {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 1400px; /* Chiều rộng tối đa cho trang */
    margin: 20px auto;
    box-shadow: var(--shadow);
    background-color: var(--surface-color);
    border-radius: 15px;
    overflow: hidden;
}

.converter-header {
    background: var(--primary-color);
    color: white;
    padding: 20px 30px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.converter-header h1 {
    font-size: 1.8rem;
    margin: 0 0 10px 0;
}
.converter-header h1 i {
    margin-right: 10px;
}
.converter-header p {
    font-size: 1rem;
    margin: 0;
}

.converter-main-content {
    display: flex;
    flex-grow: 1;
    overflow: hidden;
    padding: 20px;
    gap: 20px;
}

.converter-panel {
    flex: 1;
    background-color: var(--background-color);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}
.converter-panel h2 {
    font-size: 1.4rem;
    color: var(--primary-color-dark);
    margin-top: 0;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border-color);
}
.converter-panel h2 i {
    margin-right: 10px;
}

.converter-textarea {
    width: 100%;
    min-height: 400px; /* Chiều cao tối thiểu */
    flex-grow: 1;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
    background-color: var(--surface-color);
    color: var(--text-dark);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
    margin-bottom: 15px;
    transition: all 0.2s;
}
.converter-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}

.panel-actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
    justify-content: flex-end;
    flex-wrap: wrap;
}
.btn { /* Style chung cho các nút */
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}
.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: var(--primary-color-dark); transform: translateY(-2px); }
.btn-secondary { background-color: var(--secondary-color); color: white; }
.btn-secondary:hover { background-color: var(--secondary-color-dark); transform: translateY(-2px); }
.btn-success { background-color: var(--success-color); color: white; }
.btn-success:hover { background-color: var(--success-color-dark); transform: translateY(-2px); }

/* Review section in Output panel */
.output-panel .review-title {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-top: 20px; /* Khoảng cách với textarea */
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border-color);
}
.output-panel .review-title i {
    margin-right: 8px;
    color: var(--primary-color);
}

.review-display-area {
    min-height: 250px; /* Chiều cao tối thiểu cho review */
    background-color: var(--background-color);
    border: 1px dashed var(--border-color);
    padding: 15px;
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.7;
    flex-grow: 1; /* Cho phép review chiếm hết không gian còn lại */
    overflow-y: auto; /* Thêm thanh cuộn nếu nội dung dài */

    /* Kế thừa các style từ quiz-parser.css và style.css cho .question, .mc-option, v.v. */
}

/* --- Keys/Cores Display Section --- */
.keys-cores-display {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
    margin-bottom: 20px;
}
.keys-cores-display h3 {
    font-size: 1.1rem;
    color: var(--primary-color-dark);
    margin-top: 0;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border-color);
}
.keys-cores-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.keys-cores-row label {
    font-weight: 500;
    color: var(--text-medium);
    white-space: nowrap;
    min-width: 50px; 
}
.keys-cores-row input[type="text"] {
    flex-grow: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.9rem;
    background-color: var(--surface-color);
    color: var(--text-dark);
    cursor: text; 
}
.keys-cores-row .btn-copy {
    background-color: var(--secondary-color);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s;
    white-space: nowrap;
}
.keys-cores-row .btn-copy:hover {
    background-color: var(--secondary-color-dark);
}


/* Footer */
.converter-footer {
    background: var(--surface-color);
    padding: 15px 30px;
    text-align: center;
    color: var(--text-medium);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .converter-main-content {
        flex-direction: column; /* Xếp cột chồng lên nhau */
        padding: 15px;
    }
    .converter-section {
        margin: 15px auto;
        padding: 20px;
    }
    .converter-panel {
        min-height: 300px;
    }
    .converter-textarea {
        min-height: 200px;
    }
    .review-display-area {
        min-height: 200px;
    }
}