@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Source+Serif+4:opsz,wght@8..60,400;700&display=swap');

:root {
    --primary-color: #3367D6;
    --secondary-color: #f5f5f5;
    --font-color: #333;
    --border-color: #ccc;
    --error-color: #d93025;
    --suggestion-bg: #fffde7;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: var(--secondary-color);
    color: var(--font-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header, main, footer {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

header {
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

header h1 {
    font-family: 'Source Serif 4', serif;
    color: var(--primary-color);
    margin: 0;
}

main {
    flex-grow: 1;
}

.editor-container {
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    height: 300px;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Source Serif 4', serif;
    font-size: 16px;
    resize: vertical;
    box-sizing: border-box;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(51, 103, 214, 0.2);
}

#status-bar {
    display: flex;
    justify-content: space-between;
    font-size: 0.9em;
    color: #666;
    padding: 5px 0;
}

.error {
    color: var(--error-color);
    font-weight: 500;
}

button {
    display: block;
    width: 100%;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 500;
    color: #fff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

button:hover:not(:disabled) {
    background-color: #2a56b4;
}

button:disabled {
    background-color: #a0a0a0;
    cursor: not-allowed;
}

#results-container {
    margin-top: 30px;
}

.results-box {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    min-height: 100px;
}

.suggestion-card {
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}
.suggestion-card:last-child {
    border-bottom: none;
}
.suggestion-card p { margin: 5px 0; }
.suggestion-card .message { font-weight: 500; }
.suggestion-card .context { font-style: italic; color: #555; background: var(--suggestion-bg); padding: 2px 4px; border-radius: 4px;}
.suggestion-card .replacements { color: #008000; font-weight: bold; }

footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9em;
    color: #666;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}