/* 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, #000000 0%, #0a0a0a 50%, #000011 100%);
    color: #ffffff;
    overflow: hidden;
    height: 100vh;
    height: 100dvh; /* 動的ビューポート高さ（モバイル対応） */
    position: relative;
    width: 100vw;
    width: 100dvw; /* 動的ビューポート幅（モバイル対応） */
}

/* メインコンテナ */
#container {
    position: relative;
    width: 100vw;
    width: 100dvw; /* 動的ビューポート幅（モバイル対応） */
    height: 100vh;
    height: 100dvh; /* 動的ビューポート高さ（モバイル対応） */
    overflow: hidden;
    z-index: 0;
}

/* キャンバス */
#fireflyCanvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    cursor: crosshair;
    background: transparent;
}

/* UI要素 */
#ui {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
}

/* タイトル */
#title {
    position: absolute;
    top: 2rem;
    left: 2rem;
    text-align: left;
    pointer-events: none;
    max-width: 350px;
    min-width: 280px;
}

#title h1 {
    font-size: 1.2rem;
    font-weight: 200;
    margin-bottom: 0.5rem;
    font-family: 'Dancing Script', 'Great Vibes', 'Allura', 'Satisfy', cursive;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 0 12px rgba(255, 215, 0, 0.4), 0 0 24px rgba(255, 215, 0, 0.2);
    line-height: 1.3;
    letter-spacing: 2px;
    word-spacing: 8px;
    text-align: center;
    opacity: 0;
    transition: opacity 16s ease-in-out;
}

#title h1.title-fade-in {
    opacity: 0.8;
}

#title h1.title-fade-out {
    opacity: 0;
}



/* コントロールボタン */
#controls {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
    pointer-events: auto;
    opacity: 1;
    transition: opacity 0.6s ease;
}

.control-btn {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: #ffffff;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

/* コントロール一時非表示（フェードアウト用） */
#controls.controls-hidden {
    opacity: 0 !important;
    pointer-events: none !important;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.control-btn:active {
    transform: translateY(0);
}

.control-btn.active {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    color: #ffd700;
}

/* 呼吸ガイド */
#breathingGuide {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
    z-index: 5;
}

#breathingCircle {
    width: 200px;
    height: 200px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    margin: 0 auto 1rem;
    position: relative;
    animation: breathe 8s ease-in-out infinite;
}

#breathingCircle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: radial-gradient(circle, #ffd700, #ffed4e);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.8);
}

#breathingGuide p {
    color: #cccccc;
    font-size: 1.1rem;
    font-weight: 300;
    opacity: 1;
    transition: opacity 2s ease-out;
    position: relative;
    left: 0;
    transform: none !important;
    margin-top: 2rem;
}

#breathingGuide p.breathing-fade-out {
    opacity: 0;
    left: 0;
    transform: none !important;
}

@keyframes breathe {
    0%, 100% { 
        transform: scale(1);
        border-color: rgba(255, 255, 255, 0.3);
    }
    50% { 
        transform: scale(1.2);
        border-color: rgba(255, 215, 0, 0.6);
    }
}

/* メッセージエリア */
#messageArea {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(15px);
    border-radius: 15px;
    padding: 1.5rem 2rem;
    max-width: 80%;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 15;
    pointer-events: none;
}

#messageText {
    color: #ffffff;
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 300;
}

/* 星空背景 */
#stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 119, 198, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 40%, rgba(120, 219, 255, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 25%, #16213e 50%, #0a0a0a 75%, #000011 100%);
}

/* 基本的な星のパターン */
#stars::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        /* 大きな星 */
        radial-gradient(2px 2px at 100px 100px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 300px 200px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 500px 150px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 700px 80px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 900px 250px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 1100px 120px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 1300px 180px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 1500px 60px, rgba(255, 255, 255, 0.6), transparent),
        /* 中程度の星 */
        radial-gradient(1px 1px at 200px 50px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 400px 300px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 600px 100px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 800px 220px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 1000px 40px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 1200px 280px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 1400px 160px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 1600px 20px, rgba(255, 255, 255, 0.4), transparent),
        /* 小さな星 */
        radial-gradient(0.5px 0.5px at 150px 180px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 350px 30px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 550px 270px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 750px 90px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 950px 210px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 1150px 10px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 1350px 240px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(0.5px 0.5px at 1550px 70px, rgba(255, 255, 255, 0.3), transparent);
    background-repeat: repeat;
    background-size: 1800px 300px;
}

/* 色付きの星 */
#stars::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        /* 金色の星 */
        radial-gradient(2px 2px at 250px 150px, rgba(255, 215, 0, 0.5), transparent),
        radial-gradient(1px 1px at 650px 50px, rgba(255, 215, 0, 0.4), transparent),
        radial-gradient(2px 2px at 1050px 200px, rgba(255, 215, 0, 0.5), transparent),
        radial-gradient(1px 1px at 1450px 100px, rgba(255, 215, 0, 0.4), transparent),
        /* 赤い星 */
        radial-gradient(1px 1px at 450px 250px, rgba(255, 107, 107, 0.4), transparent),
        radial-gradient(1px 1px at 850px 30px, rgba(255, 107, 107, 0.4), transparent),
        radial-gradient(1px 1px at 1250px 170px, rgba(255, 107, 107, 0.4), transparent),
        /* 青い星 */
        radial-gradient(1px 1px at 350px 80px, rgba(78, 205, 196, 0.4), transparent),
        radial-gradient(1px 1px at 750px 220px, rgba(78, 205, 196, 0.4), transparent),
        radial-gradient(1px 1px at 1150px 40px, rgba(78, 205, 196, 0.4), transparent);
    background-repeat: repeat;
    background-size: 1800px 300px;
    opacity: 0.7;
}



/* 隠しクラス */
.hidden {
    display: none !important;
}


/* 瞑想モード */
.meditation-mode {
    filter: brightness(0.8) contrast(1.1);
}

.meditation-mode #breathingGuide {
    display: block !important;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    #title {
        top: 1rem;
        left: 1rem;
        max-width: 280px;
        min-width: 240px;
    }
    
    #title h1 {
        font-size: 1.1rem;
        letter-spacing: 1.5px;
        word-spacing: 6px;
    }
    
    
    #controls {
        bottom: 1rem;
        right: 1rem;
        flex-direction: column;
        align-items: flex-end;
    }
    
    .control-btn {
        width: 200px;
    }
    
    #breathingCircle {
        width: 150px;
        height: 150px;
    }
    
    #messageArea {
        max-width: 90%;
        padding: 1rem 1.5rem;
    }
}

@media (max-width: 480px) {
    #ui {
        padding: 1rem;
    }
    
    #title {
        top: 0.5rem;
        left: 0.5rem;
        max-width: 220px;
        min-width: 180px;
    }
    
    #title h1 {
        font-size: 1rem;
        letter-spacing: 1px;
        word-spacing: 4px;
    }
    
    
    #controls {
        bottom: 0.5rem;
        right: 0.5rem;
    }
    
    .control-btn {
        width: 160px;
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }
}

/* アニメーション効果 */
.fade-in {
    animation: fadeIn 4s ease-in-out;
}

.fade-out {
    animation: fadeOut 4s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%); }
    to { opacity: 1; transform: translateX(-50%); }
}

@keyframes fadeOut {
    from { opacity: 1; transform: translateX(-50%); }
    to { opacity: 0; transform: translateX(-50%); }
}

/* 特別なエフェクト */
.glow-effect {
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 215, 0, 0.5); }
    50% { box-shadow: 0 0 30px rgba(255, 215, 0, 0.8); }
}

/* 音声開始案内 */
#audioPrompt {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 20;
    pointer-events: none;
}

#audioPromptText {
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    padding: 2rem 3rem;
    border-radius: 3rem;
    font-size: 1.5rem;
    text-align: center;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    animation: audioPromptPulse 2s ease-in-out infinite;
    max-width: 90vw;
    word-wrap: break-word;
}

@keyframes audioPromptPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

/* 超小型デバイス対応 */
@media (max-width: 360px) {
    #ui {
        padding: 0.3rem;
    }
    
    #title {
        top: 0.3rem;
        left: 0.3rem;
        max-width: 180px;
        min-width: 140px;
    }
    
    #title h1 {
        font-size: 0.8rem;
        letter-spacing: 0.5px;
        word-spacing: 2px;
    }
    
    #controls {
        bottom: 0.3rem;
        right: 0.3rem;
        gap: 0.3rem;
    }
    
    .control-btn {
        width: 120px;
        height: 32px;
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }
    
    #messageArea {
        max-width: 98%;
        padding: 0.6rem 1rem;
        bottom: 5rem;
    }
    
    #messageText {
        font-size: 0.8rem;
        line-height: 1.3;
    }
    
    #breathingCircle {
        width: 100px;
        height: 100px;
    }
    
    #breathingGuide p {
        font-size: 0.75rem;
        margin-top: 1rem;
    }
    
    #audioPromptText {
        padding: 1.5rem 2rem;
        font-size: 1.2rem;
        border-radius: 2rem;
    }
}

/* 横向きモバイル対応 */
@media (max-height: 500px) and (orientation: landscape) {
    #ui {
        padding: 0.5rem;
    }
    
    #title {
        top: 0.3rem;
        left: 0.3rem;
        max-width: 250px;
    }
    
    #title h1 {
        font-size: 0.9rem;
    }
    
    #controls {
        bottom: 0.3rem;
        right: 0.3rem;
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .control-btn {
        width: 120px;
        height: 32px;
        font-size: 0.75rem;
    }
    
    #messageArea {
        bottom: 4rem;
        max-width: 80%;
    }
    
    #breathingGuide {
        bottom: 1rem;
    }
    
    #breathingCircle {
        width: 80px;
        height: 80px;
    }
    
    #breathingGuide p {
        font-size: 0.7rem;
        margin-top: 0.8rem;
    }
    
    #audioPromptText {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
}

/* 高解像度デバイス対応 */
@media (min-width: 768px) and (max-width: 1024px) {
    #title h1 {
        font-size: 1.3rem;
    }
    
    .control-btn {
        width: 180px;
        height: 48px;
        font-size: 1rem;
    }
    
    #breathingCircle {
        width: 200px;
        height: 200px;
    }
}

/* 超大型デバイス対応 */
@media (min-width: 1920px) {
    #title h1 {
        font-size: 1.8rem;
    }
    
    .control-btn {
        width: 220px;
        height: 56px;
        font-size: 1.1rem;
    }
    
    #breathingCircle {
        width: 300px;
        height: 300px;
    }
    
    #messageText {
        font-size: 1.2rem;
    }
}