:root {
    --background-color: #f8f9fa;
    --text-current: #111111;
    --text-previous: #cccccc;
    --ui-button-bg: #e9ecef;
    --ui-button-text: #495057;
    --ui-button-hover-bg: #dee2e6;
    --hint-text-color: #adb5bd;
    --archive-bg: white;
    --archive-text: #333;
    --archive-border: #eee;
    --danger-color: #e03131;
}

body.dark-theme {
    --background-color: #121212;
    --text-current: #e0e0e0;
    --text-previous: #444444;
    --ui-button-bg: #2b2b2b;
    --ui-button-text: #d0d0d0;
    --ui-button-hover-bg: #3c3c3c;
    --hint-text-color: #666666;
    --archive-bg: #1e1e1e;
    --archive-text: #d0d0d0;
    --archive-border: #333;
    --danger-color: #ff6b6b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-current);
    transition: background-color 0.3s ease;
}

#pageHeader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
    pointer-events: none;
}
#pageHeader > * {
    pointer-events: all;
}

#appName {
    margin: 0;
    line-height: 1.1;
}
#appName .appName-jp {
    display: block;
    font-size: 0.7em;
    font-weight: 400;
    color: var(--text-previous);
}
#appName .appName-en {
    display: block;
    font-size: 0.7em;
    font-weight: 600;
    color: var(--text-current);
}

.top-right-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

#githubLink svg {
    width: 28px;
    height: 28px;
    fill: var(--hint-text-color);
    opacity: 0.7;
    transition: opacity 0.2s ease, fill 0.2s ease;
    vertical-align: middle;
}
#githubLink:hover svg {
    opacity: 1;
    fill: var(--text-current);
}

#editor {
    width: 80%; max-width: 800px; height: 3.2em; line-height: 1.6em;
    overflow: hidden; font-size: 1.25em; outline: none; cursor: text;
}
.current { color: var(--text-current); }
.previous { color: var(--text-previous); }

#hint {
    position: fixed; top: 45%; color: var(--hint-text-color);
    pointer-events: none; transition: opacity 0.3s ease; z-index: -1;
}

.button-container {
    position: fixed; bottom: 30px; right: 30px;
    display: flex; gap: 10px;
}
.ui-button {
    font-size: 0.9em; padding: 8px 16px;
    display: flex; justify-content: center; align-items: center; gap: 8px;
    background-color: var(--ui-button-bg); color: var(--ui-button-text);
    border: none; border-radius: 20px; cursor: pointer;
    transition: background-color 0.2s ease;
}
.ui-button svg {
    width: 20px;
    height: 20px;
    fill: var(--ui-button-text);
}
.ui-button:hover { background-color: var(--ui-button-hover-bg); }

.overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}
.overlay-content {
    width: 80%;
    max-width: 700px;
    max-height: 80%;
    background-color: var(--archive-bg);
    border-radius: 8px;
    padding: 30px 40px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    overflow-y: auto;
    color: var(--archive-text);
}
#archiveContainer { padding: 20px; }

.overlay-content h2 { margin-top: 0; }
.overlay-content h3 { margin-top: 2em; border-bottom: 1px solid var(--archive-border); padding-bottom: 0.5em; }
.overlay-content p, .overlay-content li { line-height: 1.6; }
.overlay-content .tagline { font-style: italic; color: var(--hint-text-color); }
.overlay-content .close-hint { text-align: center; margin-top: 2em; font-size: 0.9em; color: var(--hint-text-color); }
.overlay-content ol { padding-left: 20px; }
.overlay-content ol li { margin-bottom: 0.5em; }

.archive-item {
    display: flex; justify-content: space-between; align-items: flex-start;
    border-bottom: 1px solid var(--archive-border);
    padding: 15px 5px; font-size: 0.9em;
}
.archive-item-content { white-space: pre-wrap; margin-right: 15px; word-break: break-word; }
.archive-item:last-child { border-bottom: none; }
.archive-actions { display: flex; align-items: center; gap: 8px; } /* Added align-items */
.archive-btn {
    background: var(--ui-button-bg); color: var(--ui-button-text);
    border: none; border-radius: 5px; padding: 5px 10px; cursor: pointer; white-space: nowrap;
    display: flex; /* Added for alignment */
    align-items: center; /* Added for alignment */
    gap: 6px; /* Added for spacing */
}

.archive-btn svg {
    width: 16px;  /* Slightly smaller for the smaller button */
    height: 16px;
    fill: var(--ui-button-text);
}

.archive-btn:hover { background: var(--ui-button-hover-bg); }
.archive-btn.confirm-delete { background-color: var(--danger-color); color: white; }