:root {
    --primary-color: #ec4899; /* Pink */
    --beam-color: #38bdf8; /* Light Blue Laser */
    --boss-color: #475569; /* Slate for Total Wall */
    --card-bg: rgba(20, 25, 30, 0.9);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #000000;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    background-color: #0f172a;
    position: relative;
    overflow-x: hidden;
}

.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    background: rgba(255,255,255,0.1);
    padding: 8px 16px;
    border-radius: 20px;
    z-index: 100;
    transition: background 0.3s;
}

.back-link:hover {
    background: rgba(255,255,255,0.2);
}

.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    z-index: -1;
}

.app-container {
    width: 100%;
    max-width: 600px;
    z-index: 10;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 32px 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

header {
    text-align: center;
    margin-bottom: 32px;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(236, 72, 153, 0.3);
}

header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* スライダー */
.slider-section {
    margin-bottom: 24px;
    background: rgba(0,0,0,0.3);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
}

.input-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 12px;
    font-size: 1rem;
}

.highlight-value {
    color: #fff;
    font-size: 2rem;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    text-shadow: 0 0 10px rgba(255,255,255,0.3);
}

input[type="range"] {
    width: 100%;
    height: 14px;
    background: #334155;
    border-radius: 8px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.5);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    border: 4px solid var(--primary-color);
    transition: transform 0.1s;
}

/* トグルボタン */
.toggle-container {
    display: flex;
    gap: 8px;
}

.toggle-container input[type="radio"] {
    display: none;
}

.toggle-btn {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    color: var(--text-muted);
    padding: 12px 4px;
    border-radius: 12px;
    text-align: center;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.toggle-btn small {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    opacity: 0.8;
    margin-top: 4px;
}

.toggle-container input[type="radio"]:checked + .toggle-btn {
    background: rgba(236, 72, 153, 0.15);
    border-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 15px rgba(236, 72, 153, 0.2);
}

/* 演出ステージ (バトル領域) */
.visual-section {
    margin-bottom: 24px;
}

.battle-stage {
    position: relative;
    width: 100%;
    height: 250px;
    background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    border: 1px dashed rgba(255,255,255,0.1);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
}

/* 総費用（巨大な壁・ボス） */
.boss-block {
    margin-top: 16px;
    background: linear-gradient(135deg, #1e293b, var(--boss-color));
    border: 4px solid #334155;
    border-radius: 8px;
    width: 80%;
    padding: 16px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    z-index: 5;
    transition: background-color 0.3s;
}

.boss-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #cbd5e1;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.boss-value {
    font-size: 2.2rem;
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 10px rgba(255,255,255,0.2);
    font-variant-numeric: tabular-nums;
}

/* 激揺れアニメーション（ビーム被弾時） */
.boss-block.shake {
    animation: hit-shake 0.1s infinite;
    background: linear-gradient(135deg, #475569, #94a3b8);
}

@keyframes hit-shake {
    0% { transform: translate(2px, 1px) rotate(0deg); }
    10% { transform: translate(-1px, -2px) rotate(-1deg); }
    20% { transform: translate(-3px, 0px) rotate(1deg); }
    30% { transform: translate(0px, 2px) rotate(0deg); }
    40% { transform: translate(1px, -1px) rotate(1deg); }
    50% { transform: translate(-1px, 2px) rotate(-1deg); }
    60% { transform: translate(-3px, 1px) rotate(0deg); }
    70% { transform: translate(2px, 1px) rotate(-1deg); }
    80% { transform: translate(-1px, -1px) rotate(1deg); }
    90% { transform: translate(2px, 2px) rotate(0deg); }
    100% { transform: translate(1px, -2px) rotate(-1deg); }
}

/* ご祝儀ビーム下部 */
.beam-container {
    position: absolute;
    bottom: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.beam-base {
    width: 60px;
    height: 10px;
    background: var(--beam-color);
    border-radius: 10px 10px 0 0;
    box-shadow: 0 0 20px var(--beam-color);
    z-index: 10;
}

.beam-laser {
    position: absolute;
    bottom: 10px;
    width: 30px;
    height: 0%;
    background: linear-gradient(90deg, transparent 0%, #fff 50%, transparent 100%);
    box-shadow: 0 0 30px 10px var(--beam-color);
    transform-origin: bottom;
    opacity: 0;
    z-index: 4;
}

/* 発射アニメーション */
.beam-laser.fire {
    animation: fire-beam 1s ease-out forwards;
}

@keyframes fire-beam {
    0% { height: 0%; opacity: 1; }
    20% { height: 75%; opacity: 1; box-shadow: 0 0 50px 20px var(--beam-color); }
    60% { height: 75%; opacity: 1; box-shadow: 0 0 30px 10px var(--beam-color); }
    100% { height: 75%; opacity: 0; }
}

.beam-text {
    position: absolute;
    bottom: 20px;
    font-size: 0.9rem;
    font-weight: 900;
    color: var(--beam-color);
    text-shadow: 0 0 5px rgba(56, 189, 248, 0.8), 0 0 2px #000;
    text-align: center;
    z-index: 11;
    opacity: 0;
}

.beam-laser.fire + .beam-text {
    animation: text-fade 1s ease-out forwards;
}

@keyframes text-fade {
    0% { opacity: 0; transform: translateY(10px); }
    20% { opacity: 1; transform: translateY(-10px); }
    60% { opacity: 1; transform: translateY(-10px); }
    100% { opacity: 0; transform: translateY(0); }
}

/* 手出し（最終結果）パネル */
.result-panel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(3);
    background: rgba(20, 0, 0, 0.9);
    border: 4px solid var(--primary-color);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8), inset 0 0 30px rgba(236,72,153,0.3);
    z-index: 20;
    opacity: 0;
    width: 90%;
    pointer-events: none;
}

.result-panel.show {
    animation: pop-result 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes pop-result {
    0% { transform: translate(-50%, -50%) scale(3); opacity: 0; }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

.result-title {
    font-size: 1rem;
    font-weight: 800;
    color: #fca5a5;
    margin-bottom: 8px;
}

.result-value {
    font-size: 3rem;
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 15px var(--primary-color);
    line-height: 1;
}

.result-sub {
    margin-top: 12px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #cbd5e1;
}

/* 内訳説明 */
.breakdown-card {
    background: rgba(0,0,0,0.4);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.05);
}

.breakdown-card h3 {
    font-size: 0.9rem;
    color: #cbd5e1;
    margin-bottom: 12px;
    text-align: center;
}

.formula-block {
    background: rgba(255,255,255,0.05);
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: #e2e8f0;
    border-left: 4px solid;
}

.calc-boss { border-color: var(--boss-color); }
.calc-beam { border-color: var(--beam-color); }

.formula-block strong { font-size: 0.95rem; }

.cost-hint {
    margin-top: 12px;
    font-size: 0.75rem;
    color: #64748b;
    line-height: 1.4;
}