:root {
    --bg-color: #121212;
    --text-color: #ffffff;
    --primary: #bb86fc;
    --primary-variant: #3700b3;
    --secondary: #03dac6;
    --surface: #1e1e1e;
    --error: #cf6679;
    --warning: #f6e05e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    touch-action: none;
}

.screen {
    display: none;
    flex-direction: column;
    height: 100%;
    padding: 15px;
}

.screen.active {
    display: flex;
}

/* Setup Screen */
h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #aaa;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #333;
    background-color: var(--surface);
    color: white;
    font-size: 16px;
}

#connect-btn {
    padding: 15px;
    background-color: var(--primary);
    color: black;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    margin-bottom: 15px;
}

#connect-btn:active {
    background-color: var(--primary-variant);
    color: white;
}

/* Control Screen */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.header-buttons {
    display: flex;
    gap: 10px;
}

#status-indicator {
    padding: 5px 10px;
    border-radius: 4px;
    font-weight: bold;
}

.status-disconnected { color: var(--error); }
.status-connecting { color: var(--warning); }
.status-connected { color: var(--secondary); }

#center-btn, #pause-btn {
    padding: 10px 15px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    color: black;
}

#center-btn { background-color: var(--primary); }
#center-btn:active { background-color: var(--primary-variant); color: white; }

/* 一時停止ボタンの状態 */
#pause-btn.active-state { background-color: var(--warning); }
#pause-btn.paused-state { background-color: var(--error); color: white; }

.toggles {
    display: flex;
    justify-content: space-around;
    background-color: var(--surface);
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.toggles label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ddd;
    font-size: 14px;
}

.toggles input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.sliders {
    background-color: var(--surface);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.slider-group { margin-bottom: 15px; }
.slider-group:last-child { margin-bottom: 0; }
input[type=range] { width: 100%; margin-top: 5px; }

/* トラックパッド */
.trackpad-area {
    flex: 1;
    background-color: #2a2a2a;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #888;
    margin-bottom: 15px;
    border: 2px solid #444;
    touch-action: none; /* 必須: ブラウザのジェスチャをブロック */
}

.mouse-buttons {
    display: flex;
    gap: 10px;
    height: 100px;
}

.mouse-btn {
    flex: 1;
    border: none;
    border-radius: 8px;
    background-color: #333;
    color: white;
    font-size: 18px;
    font-weight: bold;
}

.mouse-btn:active, .mouse-btn.active {
    background-color: var(--secondary);
    color: black;
}