/* テーマ切り替えスイッチ */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 10px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
    margin: 0 10px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* ライトモード（デフォルト） */
:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --container-bg: #ffffff;
    --border-color: #e1e1e1;
    --button-bg: #ffffff;
    --button-text: #000000;
    --button-border: #d1d1d1;
    --button-hover-bg: #f8f8f8;
    --button-hover-border: #c1c1c1;
    --clear-button-text: #ff0000;
    --clear-button-border: #ffcccc;
    --clear-button-hover-bg: #fff5f5;
    --clear-button-hover-border: #ff9999;
    --import-button-text: #0000ff;
    --import-button-border: #ccccff;
    --import-button-hover-bg: #f5f5ff;
    --import-button-hover-border: #9999ff;
    --memo-list-active-bg: #f0f0f0;
    --memo-list-hover-bg: #f8f8f8;
    --focus-border-color: #a1a1a1;
    --resize-handle-bg: #e1e1e1;
    --resize-handle-hover-bg: #d1d1d1;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, Avenir Next, Avenir,
        Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    background-color: var(--container-bg);
    padding: 30px;
    border: 1px solid var(--border-color);
    height: calc(100vh - 40px);
    box-sizing: border-box;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: var(--text-color);
    font-weight: 300;
    margin-bottom: 30px;
    font-size: 2em;
    letter-spacing: -0.5px;
}

.button-group {
    margin-bottom: 25px;
    text-align: center;
}

.button-group button {
    padding: 10px 16px;
    margin: 0 5px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: 1px solid var(--button-border);
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, Avenir Next, Avenir,
        Helvetica, sans-serif;
    font-size: 0.9em;
    border-radius: 3px;
    transition: all 0.2s ease;
}

.button-group button:hover {
    background-color: var(--button-hover-bg);
    border-color: var(--button-hover-border);
}

#clear-all {
    background-color: var(--button-bg);
    color: var(--clear-button-text);
    border: 1px solid var(--clear-button-border);
}

#clear-all:hover {
    background-color: var(--clear-button-hover-bg);
    border-color: var(--clear-button-hover-border);
}

#import-notes {
    background-color: var(--button-bg);
    color: var(--import-button-text);
    border: 1px solid var(--import-button-border);
}

#import-notes:hover {
    background-color: var(--import-button-hover-bg);
    border-color: var(--import-button-hover-border);
}

.main-container {
    display: flex;
    gap: 40px;
    margin-top: 20px;
    height: calc(100% - 120px);
}

.resize-handle {
    width: 5px;
    background-color: var(--resize-handle-bg);
    cursor: col-resize;
    transition: background-color 0.2s ease;
}

.resize-handle:hover {
    background-color: var(--resize-handle-hover-bg);
}

.memo-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.memo-list-container {
    width: 250px;
    min-width: 150px;
    max-width: 600px;
    border-left: 1px solid var(--border-color);
    padding-left: 25px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.memo-list-container h2 {
    margin-top: 0;
    color: var(--text-color);
    font-weight: 300;
    font-size: 1.3em;
    letter-spacing: -0.3px;
}

#memo-list-right {
    list-style-type: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}

.memo-list-item {
    padding: 10px 8px;
    border: 1px solid var(--container-bg);
    margin-bottom: 4px;
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, Avenir Next, Avenir,
        Helvetica, sans-serif;
    color: var(--text-color);
    font-size: 0.9em;
    border-radius: 2px;
    transition: all 0.1s ease;
}

.memo-list-item:hover {
    background-color: var(--memo-list-hover-bg);
    border-color: var(--button-hover-bg);
}

.memo-list-item.active {
    background-color: var(--memo-list-active-bg);
    border-color: var(--border-color);
}

#memo {
    width: 100%;
    height: calc(100vh - 300px);
    min-height: 200px;
    padding: 18px;
    font-size: 1em;
    border: 1px solid var(--button-border);
    background-color: var(--container-bg);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, Avenir Next, Avenir,
        Helvetica, sans-serif;
    resize: vertical;
    box-sizing: border-box;
    border-radius: 2px;
    transition: border-color 0.2s ease;
}

#memo:focus {
    outline: none;
    border-color: var(--focus-border-color);
}

/* ダークモード */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --container-bg: #1e1e1e;
    --border-color: #333333;
    --button-bg: #252525;
    --button-text: #f0f0f0;
    --button-border: #444444;
    --button-hover-bg: #333333;
    --button-hover-border: #555555;
    --clear-button-text: #ff6666;
    --clear-button-border: #553333;
    --clear-button-hover-bg: #442222;
    --clear-button-hover-border: #774444;
    --import-button-text: #6699ff;
    --import-button-border: #334466;
    --import-button-hover-bg: #223355;
    --import-button-hover-border: #446699;
    --memo-list-active-bg: #333333;
    --memo-list-hover-bg: #2a2a2a;
    --focus-border-color: #6699cc;
    --resize-handle-bg: #333333;
    --resize-handle-hover-bg: #444444;
}

[data-theme="dark"] .container {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}