:root{--primary-color: #2e86de;--secondary-color: #8b4513;--bg-color: #dff9fb;--panel-bg: #ffffff;--text-dark: #000000;--accent-red: #ff7675;--accent-yellow: #fdcb6e;--accent-blue: #74b9ff;--border-thick: 4px solid #000000;--border-thin: 3px solid #000000;--shadow-thick: 8px 8px 0px #000000;--shadow-medium: 5px 5px 0px #000000;--shadow-thin: 3px 3px 0px #000000}*{box-sizing:border-box;margin:0;padding:0;user-select:none;-webkit-user-select:none;-webkit-user-drag:none}html,body{width:100%;height:100dvh;font-family:Nunito,Noto Sans KR,sans-serif;color:var(--text-dark);background-color:var(--bg-color);overflow:hidden;touch-action:none}h1,h2,h3,h4{font-family:Black Han Sans,sans-serif;font-weight:400;letter-spacing:1px}#app{width:100%;height:100dvh;min-height:100%;display:flex;flex-direction:column}.main-menu{flex:1;display:flex;justify-content:center;align-items:center;background:linear-gradient(to bottom,#74b9ff,#dff9fb);padding:env(safe-area-inset-top,0px) env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px)}.menu-content{text-align:center;background:#fff;padding:50px;border-radius:24px;border:var(--border-thick);box-shadow:var(--shadow-thick)}.menu-title{font-size:3.5rem;color:#1565c0;margin-bottom:10px}.menu-subtitle{font-size:1.2rem;color:#555;margin-bottom:40px;font-weight:700}.menu-buttons{display:flex;gap:20px;justify-content:center}.menu-btn{display:flex;flex-direction:column;align-items:center;padding:24px 30px;border:var(--border-thin);border-radius:16px;cursor:pointer;transition:transform .1s ease,box-shadow .1s ease;width:250px}.menu-btn:hover{transform:translate(-3px,-3px)}.menu-btn:active{transform:translate(2px,2px)}.simulation-btn{background:#a8ffb2;box-shadow:var(--shadow-medium)}.simulation-btn:hover{box-shadow:8px 8px #000!important}.simulation-btn:active{box-shadow:1px 1px #000!important}.simulation-btn .menu-btn-label{color:#000}.game-btn{background:#ffeaa7;box-shadow:var(--shadow-medium)}.game-btn:hover{box-shadow:8px 8px #000!important}.game-btn:active{box-shadow:1px 1px #000!important}.game-btn .menu-btn-label{color:#000}.menu-btn-icon{font-size:3.5rem;margin-bottom:15px}.menu-btn-label{font-size:1.8rem;font-weight:900;font-family:Black Han Sans,sans-serif;margin-bottom:10px;letter-spacing:1px}.menu-btn-desc{font-size:.95rem;color:#666;line-height:1.4;font-weight:700}.hidden{display:none!important}.game-screen{flex:1;display:flex;flex-direction:column;width:100vw;height:100dvh}.btn.home-btn{background:#74b9ff;color:#000;padding:8px 15px;font-size:1rem}.game-header{min-height:80px;height:auto;background:var(--panel-bg);border-bottom:var(--border-thick);display:flex;justify-content:space-between;align-items:center;padding:env(safe-area-inset-top,0px) calc(30px + env(safe-area-inset-right,0px)) 0 calc(30px + env(safe-area-inset-left,0px));z-index:10}.mission-board{display:flex;align-items:center;gap:15px}.badge{background-color:var(--accent-yellow);color:#000;padding:6px 12px;border:var(--border-thin);box-shadow:var(--shadow-thin);border-radius:8px;font-weight:900;font-size:1rem}#mission-text{font-size:1.3rem;color:#000;font-weight:700}.test-controls{display:flex;gap:10px}.btn.test-btn{background:#a8ffb2;color:#000;font-size:.95rem;padding:8px 16px;font-family:Black Han Sans,sans-serif;letter-spacing:.5px;border:var(--border-thin);border-radius:8px;box-shadow:var(--shadow-thin)}.legend-board{display:flex;gap:20px;font-weight:700;background:#f5f5f5;padding:10px 20px;border-radius:20px}.legend-item{display:flex;align-items:center;gap:5px}.icon{font-size:1.2rem}.icon.red{color:var(--accent-red)}.icon.yellow{color:var(--accent-yellow)}.icon.blue{color:var(--accent-blue)}.game-area{flex:1;display:flex;position:relative;overflow:hidden}.canvas-container{flex:1;position:relative;background:linear-gradient(to bottom,#bbdefb,#e3f2fd)}canvas{width:100%;height:100%;display:block;cursor:pointer;touch-action:none}.bottle-container{position:absolute;top:0;left:0;transform-origin:bottom right;transition:transform .15s ease-out;pointer-events:none}.bottle{width:60px;height:120px;display:flex;flex-direction:column;align-items:center;transform:rotate(-10deg)}.bottle-neck{width:20px;height:30px;background:#ffffffd9;border:var(--border-thin);border-bottom:none;border-radius:5px 5px 0 0}.bottle-body{width:60px;height:90px;background:#ffffffd9;border:var(--border-thin);border-radius:10px;position:relative;overflow:hidden}.bottle-water{position:absolute;bottom:0;left:0;width:100%;height:60%;background:var(--primary-color);transition:height .3s}.controls-panel{width:350px;background:var(--panel-bg);border-left:var(--border-thick);padding:30px calc(30px + env(safe-area-inset-right,0px)) calc(30px + env(safe-area-inset-bottom,0px)) calc(30px + env(safe-area-inset-left,0px));display:flex;flex-direction:column;gap:30px;z-index:10}.controls-panel h3{font-size:1.8rem;color:#000;text-align:center;margin-bottom:10px}.instructions-card{background:#dff9fb;padding:20px;border-radius:12px;border:var(--border-thin);box-shadow:var(--shadow-medium);font-weight:700}.instructions-card h4{color:#000;margin-bottom:5px;font-size:1.1rem}.instructions-card p{font-size:.95rem;line-height:1.4;color:#000}.highlight-text{color:#000!important;background:#ffeaa7;border:2px solid #000;box-shadow:2px 2px #000;padding:6px 10px;border-radius:6px;display:inline-block;margin-top:5px}.tool-selector{display:flex;gap:10px}.tool-btn{flex:1;padding:10px;font-family:Black Han Sans,sans-serif;letter-spacing:.5px;font-size:1.1rem;border:var(--border-thin);background:#fff;border-radius:10px;cursor:pointer;transition:transform .1s ease,box-shadow .1s ease;box-shadow:var(--shadow-thin)}.tool-btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px #000}.tool-btn:active{transform:translate(1px,1px);box-shadow:1px 1px #000}.tool-btn.active{border-color:#000;background:#74b9ff;color:#000;box-shadow:1px 1px #000;transform:translate(1px,1px)}.simulation-settings{display:flex;flex-direction:column;gap:10px;background:#f5f5f5;padding:15px;border-radius:10px;margin-bottom:5px}.simulation-settings label{font-family:Black Han Sans,sans-serif;letter-spacing:.5px;font-size:1.1rem;color:#333}.styled-slider{-webkit-appearance:none;width:100%;height:12px;background:#fff;border:var(--border-thin);border-radius:6px;outline:none}.styled-slider::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;border:var(--border-thin);background:#ff7675;cursor:pointer;box-shadow:var(--shadow-thin)}.actions{display:flex;justify-content:center}.btn{padding:12px 24px;font-size:1.1rem;font-weight:900;font-family:Black Han Sans,sans-serif;letter-spacing:.5px;border:var(--border-thin);border-radius:12px;cursor:pointer;transition:transform .1s ease,box-shadow .1s ease;box-shadow:var(--shadow-thin);background:#fff;color:#000}.btn.primary{background:#ff7675;color:#000}.btn:hover{transform:translate(-2px,-2px);box-shadow:5px 5px #000}.btn:active{transform:translate(2px,2px);box-shadow:1px 1px #000}.concept-reminder{background:#ffeaa7;padding:20px;border-radius:12px;border:var(--border-thin);box-shadow:var(--shadow-medium);margin-top:auto}.concept-reminder h4{color:#000;margin-bottom:10px;font-size:1.2rem}.concept-reminder ul{padding-left:20px;color:#000;font-weight:700;line-height:1.5}.concept-reminder li{margin-bottom:5px}.modal{position:fixed;top:0;left:0;right:0;bottom:0;width:100vw;height:100dvh;background:#0009;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:1;transition:opacity .3s}.modal.hidden{opacity:0;pointer-events:none}.modal-content{background:#fff;padding:40px;border:var(--border-thick);border-radius:20px;box-shadow:var(--shadow-thick);text-align:center;transform:scale(1);transition:transform .3s}.modal.hidden .modal-content{transform:scale(.8)}.victory-title{font-size:2.5rem;color:#000;margin-bottom:15px}.victory-desc{font-size:1.2rem;color:#000;margin-bottom:30px;font-weight:700}.large-btn{font-size:1.5rem;padding:20px 40px}.close-panel-btn,.floating-controls-btn{display:none}@media (min-width: 901px){.instructions-card.collapsed p,.instructions-card.collapsed .highlight-text,.concept-reminder.collapsed ul{display:block!important}}@media (max-width: 900px){.menu-content{padding:30px 20px;width:90%;max-width:440px;border-radius:24px}.menu-title{font-size:2.2rem}.menu-subtitle{font-size:1rem;margin-bottom:25px}.menu-buttons{flex-direction:column;gap:15px;align-items:center;width:100%}.menu-btn{width:100%;max-width:280px;padding:16px 20px;border-radius:16px}.menu-btn-icon{font-size:2.2rem;margin-bottom:8px}.menu-btn-label{font-size:1.3rem;margin-bottom:5px}.menu-btn-desc{font-size:.85rem}.game-header{height:auto;min-height:60px;padding:calc(10px + env(safe-area-inset-top,0px)) calc(15px + env(safe-area-inset-right,0px)) 10px calc(15px + env(safe-area-inset-left,0px));flex-direction:column;gap:8px;align-items:center;text-align:center}.mission-board{flex-wrap:wrap;justify-content:center;width:100%;gap:8px}#mission-text{font-size:1rem;width:100%;line-height:1.4;text-align:center}.floating-controls-btn{display:flex;align-items:center;justify-content:center;position:absolute;top:15px;right:15px;z-index:50;padding:8px 14px;font-family:Black Han Sans,sans-serif;letter-spacing:.5px;font-size:.95rem;font-weight:700;color:#000;background:#ffb74d;border:var(--border-thin);box-shadow:var(--shadow-thin);border-radius:10px;cursor:pointer;transition:all .15s ease}.floating-controls-btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px #000}.floating-controls-btn:active{transform:translate(1px,1px);box-shadow:2px 2px #000}.instructions-card h4,.concept-reminder h4{cursor:pointer;-webkit-user-select:none;user-select:none;display:flex;justify-content:space-between;align-items:center;width:100%;padding:4px 0}.instructions-card h4:after,.concept-reminder h4:after{content:"▾";font-size:1.1rem;color:#666;font-weight:700;transition:transform .2s ease}.instructions-card:not(.collapsed) h4:after,.concept-reminder:not(.collapsed) h4:after{content:"▴"}.instructions-card.collapsed p,.instructions-card.collapsed .highlight-text,.concept-reminder.collapsed ul{display:none}@media (orientation: portrait){.game-screen{height:100dvh}.game-area{flex-direction:column}.canvas-container{flex:1;min-height:40vh}.controls-panel{width:100%;height:auto;max-height:48dvh;overflow-y:auto;border-top:var(--border-thick);padding:15px calc(15px + env(safe-area-inset-right,0px)) calc(15px + env(safe-area-inset-bottom,0px)) calc(15px + env(safe-area-inset-left,0px));gap:15px;margin-top:0;-webkit-overflow-scrolling:touch}.controls-panel .concept-reminder{margin-top:0}.close-panel-btn{display:none}}@media (orientation: landscape){.game-header{min-height:50px;padding:5px 15px}#mission-text{display:none}.game-area{flex-direction:row}.canvas-container{flex:1;height:100%}.controls-panel{position:absolute;right:0;top:0;bottom:0;width:320px;height:100dvh;background:var(--panel-bg);border-left:var(--border-thick);transform:translate(100%);transition:transform .35s cubic-bezier(.25,1,.5,1);z-index:100;overflow-y:auto;padding:env(safe-area-inset-top,20px) calc(20px + env(safe-area-inset-right,0px)) calc(20px + env(safe-area-inset-bottom,0px)) calc(20px + env(safe-area-inset-left,0px));gap:20px;margin-top:0;-webkit-overflow-scrolling:touch}.controls-panel.drawer-open{transform:translate(0)}.panel-header{display:flex;justify-content:space-between;align-items:center;width:100%;border-bottom:2px solid #f5f5f5;padding-bottom:10px}.close-panel-btn{display:flex;justify-content:center;align-items:center;width:34px;height:34px;border-radius:50%;border:var(--border-thin);background:#ff7675;font-size:1.4rem;cursor:pointer;color:#000;transition:all .15s ease;font-weight:700;box-shadow:var(--shadow-thin)}.close-panel-btn:hover{background:#ff7675;transform:translate(-1px,-1px);box-shadow:4px 4px #000}.close-panel-btn:active{transform:translate(1px,1px);box-shadow:1px 1px #000}}}@media (max-width: 600px){.modal-content{padding:25px 20px;width:92%;max-width:380px;border-radius:20px}.victory-title{font-size:1.8rem}.victory-desc{font-size:1rem;margin-bottom:20px}.large-btn{font-size:1.2rem;padding:12px 24px;border-radius:16px}}