/* --- デザイン変数 ---  3/20 0:42 完成 --- */
:root {
    --exit-green: #22ff55;
    --dim-green: rgba(34, 255, 85, 0.15);
    --bg-black: #000000;
    --light-gray: #d0d0d0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    cursor: pointer;

}

body {
    background-color: var(--bg-black);
    color: var(--exit-green);
    font-family: serif;
    line-height: 1.8;
    transition: 0.8s;
    padding-top: 150px;
    min-height: 100vh;
    overflow-x: hidden;
}

body.light-mode {
    background-color: var(--light-gray);
    color: #1a1a1a;
}

/* --- レイアウト --- */
.story-container {
    width: 90%;
    max-width: 650px;
    margin: 0 auto;
    padding-bottom: 100px;
}

.story-section,
.quiz-area {
    background: rgba(0, 20, 0, 0.7);
    border: 1px solid var(--dim-green);
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 8px;
    text-align: center;
}

body.light-mode .story-section,
body.light-mode .quiz-area {
    background: rgba(255, 255, 255, 0.8);
    border-color: #999;
}

/* --- サイドパネル (履歴メニュー) --- */
.sidebar {
    position: fixed;
    top: 0;
    right: -300px;
    /* 初期状態は隠す */
    width: 280px;
    height: 100%;
    background: rgba(0, 15, 0, 0.98);
    border-left: 2px solid var(--exit-green);
    transition: 0.4s ease-in-out;
    z-index: 2000;
    padding: 20px;
    overflow-y: auto;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.8);
}

.sidebar.open {
    right: 0;
}

.menu-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1500;
    background: rgba(0, 40, 0, 0.8);
    border: 1px solid var(--exit-green);
    color: var(--exit-green);
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    border-radius: 4px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--exit-green);
    font-size: 2rem;
    cursor: pointer;
    margin-bottom: 20px;
}

.sidebar-item {
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 1px solid var(--dim-green);
    padding-bottom: 15px;
}

.history-thumb {
    width: 100%;
    max-width: 200px;
    height: auto;
    border: 1px solid var(--dim-green);
    margin: 10px 0;
}

.sidebar-item input {
    width: 100% !important;
    font-size: 0.8rem !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid #444 !important;
    color: #888 !important;
    text-align: center;
}

.folder-title {
    font-size: 1.2rem;
    letter-spacing: 4px;
    margin-bottom: 20px;
    text-align: center;
    border-bottom: 2px solid var(--exit-green);
}

/* --- 電球スイッチ --- */
.light-fixture {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    cursor: pointer;
}

.wire {
    width: 2px;
    height: 60px;
    background: #444;
    margin: 0 auto;
}

.socket {
    width: 24px;
    height: 15px;
    background: #666;
    margin: 0 auto;
}

.bulb {
    width: 46px;
    height: 65px;
    background: #333;
    border-radius: 50% 50% 35% 35% / 45% 45% 55% 55%;
    position: relative;
    transition: 0.5s;
}

body.light-mode .bulb {
    background: #ffdb4d;
    box-shadow: 0 0 40px #ffaa00;
}

/* --- 共通コンポーネント --- */
.q-img-container {
    position: relative;
    width: 100%;
    max-width: 350px;
    margin: 20px auto;
    overflow: hidden;
    background: #000;
    border: 1px solid var(--dim-green);
}

.q-img {
    width: 100%;
    display: block;
    transition: 0.5s;
}

.img-light {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    z-index: 2;
}

body.light-mode .img-light {
    opacity: 1;
}

input[type="text"] {
    width: 100%;
    max-width: 300px;
    padding: 12px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--exit-green);
    color: var(--exit-green);
    text-align: center;
    outline: none;
    margin-bottom: 15px;
}

body.light-mode input[type="text"] {
    border-color: #1a1a1a;
    color: #1a1a1a;
}

button:not(.menu-btn):not(.close-btn) {
    padding: 10px 25px;
    background: transparent;
    border: 1px solid var(--exit-green);
    color: var(--exit-green);
    cursor: pointer;
    font-size: 1.1rem;
    transition: 0.3s;
}

button:hover {
    background: var(--exit-green);
    color: #000;
}

/* --- 最終スイッチ --- */
.switch-plate {
    width: 110px;
    background: #eee;
    border-radius: 6px;
    padding: 25px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    margin: 20px auto;
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.5);
}

.rocker-switch-wrapper {
    width: 45px;
    height: 45px;
    position: relative;
    cursor: pointer;
}

.rocker-switch-wrapper input {
    opacity: 0;
    width: 0;
    height: 0;
}

.rocker-switch {
    position: absolute;
    inset: 0;
    background: #fff;
    border: 1px solid #ccc;
    transition: 0.1s;
}

input:checked+.rocker-switch {
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.2);
    transform: translateY(1px);
}

.sw-label {
    font-size: 10px;
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    color: #666;
}

.hidden {
    display: none !important;
}

.white-ghost-msg {
    color: #fff;
    text-shadow: 0 0 8px var(--exit-green);
}

/* --- フィードバックメッセージ --- */
.feedback-msg {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 15px 40px;
    font-size: 1.5rem;
    letter-spacing: 0.2rem;
    z-index: 3000;
    pointer-events: none;
    transition: opacity 0.5s, transform 0.5s;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.9);
    white-space: nowrap;
}

.feedback-msg.success {
    color: var(--exit-green);
    border: 2px solid var(--exit-green);
    box-shadow: 0 0 20px var(--exit-green);
}

.feedback-msg.error {
    color: #ff3333;
    border: 2px solid #ff3333;
    box-shadow: 0 0 20px #ff3333;
}