.profile-header{position:absolute;top:20px;left:20px;background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);border-radius:20px;padding:15px 25px;border:1px solid rgba(255,255,255,0.2);box-shadow:0 8px 32px rgba(0,0,0,0.1);z-index:100;max-width:400px;}.profile-container{display:flex;align-items:center;gap:20px;}.profile-image-wrapper{width:60px;height:60px;border-radius:50%;overflow:hidden;border:2px solid #00b4db;flex-shrink:0;}.profile-image{width:100%;height:100%;object-fit:cover;}.profile-info{flex:1;}.profile-name{font-size:1.2rem;font-weight:600;margin-bottom:5px;color:white;}.profile-contact{display:flex;flex-direction:column;gap:4px;}.contact-link{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,0.9);text-decoration:none;font-size:0.85rem;transition:color 0.3s ease;}.contact-link:hover{color:#00b4db;}.contact-icon{font-size:1rem;}@media (max-width:768px){.profile-header{position:relative;top:0;left:0;margin:10px auto;max-width:90%;}.profile-container{flex-direction:column;text-align:center;}}*{margin:0;padding:0;box-sizing:border-box;font-family:'Arial',sans-serif;}#page1{background:linear-gradient(135deg,rgba(12,12,12,0.75),rgba(22,33,62,0.75)),url("../images/background.jpg") center/cover no-repeat;background-attachment:fixed;background-blend-mode:transparent;color:white;height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;position:relative;overflow:hidden;cursor:pointer;}.title-section h1{font-size:5rem;margin-bottom:1rem;background:linear-gradient(45deg,#ffffff,#e6e6e6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:glow 2s ease-in-out infinite alternate;}.subtitle{font-size:1.5rem;margin-bottom:2rem;opacity:0.9;}.purpose{max-width:600px;margin:2rem auto;font-size:1.1rem;line-height:1.6;opacity:0.8;}.click-instruction{position:absolute;bottom:50px;font-size:1rem;opacity:0.7;animation:bounce 2s infinite;}.animation-container{position:relative;width:400px;height:300px;margin:2rem auto;display:none;}.atom{position:absolute;border-radius:50%;background:radial-gradient(circle,#00b4db,#0083b0);box-shadow:0 0 20px #00b4db;}.nucleus{width:30px;height:30px;top:135px;left:185px;animation:pulse 2s infinite;}.electron{width:10px;height:10px;background:#ff0080;box-shadow:0 0 15px #ff0080;border-radius:50%;position:absolute;}.orbit{position:absolute;border:1px solid rgba(255,255,255,0.1);border-radius:50%;}.reaction-text{position:absolute;font-size:1.2rem;font-weight:bold;opacity:0;animation:fadeInOut 3s ease-in-out;color:#00b4db;width:100%;text-align:center;}.loading-bar{width:300px;height:4px;background:rgba(255,255,255,0.1);border-radius:2px;margin-top:2rem;overflow:hidden;display:none;}.loading-progress{width:0%;height:100%;background:linear-gradient(90deg,#00b4db,#0083b0);}@keyframes glow{from{text-shadow:0 0 20px #00b4db;}to{text-shadow:0 0 30px #0083b0,0 0 40px #00b4db;}}@keyframes pulse{0%,100%{transform:scale(1);}50%{transform:scale(1.1);}}@keyframes fadeInOut{0%,100%{opacity:0;transform:translateY(20px);}50%{opacity:1;transform:translateY(0);}}@keyframes bounce{0%,20%,50%,80%,100%{transform:translateY(0);}40%{transform:translateY(-10px);}60%{transform:translateY(-5px);}}#page2{display:none;background:linear-gradient(135deg,#1a1a2e,#16213e);color:#ecf0f1;min-height:100vh;}.container{max-width:1400px;margin:0 auto;padding:20px;}header{text-align:center;padding:20px 0;margin-bottom:30px;position:relative;}h1{font-size:2.5rem;margin-bottom:10px;background:linear-gradient(45deg,#00b4db,#0083b0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}.main-content{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-bottom:30px;}@media (max-width:900px){.main-content{grid-template-columns:1fr;}}.panel{background:rgba(255,255,255,0.95);border-radius:15px;padding:25px;box-shadow:0 8px 32px rgba(0,0,0,0.3);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.1);min-height:800px;display:flex;flex-direction:column;}.panel-title{font-size:1.5rem;margin-bottom:20px;color:#2c3e50;border-bottom:2px solid #ecf0f1;padding-bottom:10px;}.periodic-table{display:grid;grid-template-columns:repeat(18,1fr);gap:3px;margin-bottom:20px;background:rgba(131,74,74,0.8);padding:10px;border-radius:10px;}.element{aspect-ratio:1;display:flex;flex-direction:column;justify-content:center;align-items:center;border-radius:6px;font-size:0.6rem;cursor:pointer;transition:all 0.3s ease;border:1px solid rgba(0,0,0,0.1);position:relative;padding-top:18px;overflow:hidden;}.element:hover{transform:scale(1.08);z-index:12;box-shadow:0 6px 18px rgba(0,0,0,0.35);}.element.selected{transform:scale(1.2);box-shadow:0 0 0 3px #3498db;z-index:10;}.element-symbol{font-weight:bold;font-size:0.9rem;color:#000;margin-top:6px;z-index:15;text-wrap:none;}.selected-elements{display:flex;flex-wrap:wrap;gap:10px;margin:15px 0;}.selected-element{display:flex;align-items:center;gap:8px;background:#ecf0f1;padding:8px 12px;border-radius:20px;font-size:0.9rem;color:#2c3e50;}.mole-input{width:70px;padding:4px;border-radius:4px;border:1px solid #ccc;text-align:center;}.remove-element{background:none;border:none;color:#e74c3c;cursor:pointer;font-weight:bold;font-size:1.2rem;}.total-moles{margin:10px 0;font-weight:600;color:#2c3e50;font-size:1.1rem;}.steps-chart{margin:30px 0;background:white;border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,0.1);border:1px solid #e0e0e0;}.chart-title{font-weight:700;margin-bottom:20px;color:#2c3e50;text-align:center;font-size:1.3rem;padding-bottom:15px;border-bottom:2px solid #ecf0f1;}.chart-item{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid rgba(0,0,0,0.1);font-size:1.1rem;transition:all 0.3s ease;margin-bottom:10px;border-radius:8px;}.chart-item:last-child{border-bottom:none;margin-bottom:0;}.current-system{background:rgba(52,152,219,0.2);border-radius:8px;transform:scale(1.03);box-shadow:0 4px 12px rgba(52,152,219,0.3);border:2px solid #3498db;}.system-type{font-weight:600;color:#2c3e50;font-size:1.1rem;}.steps-range{color:#3498db;font-weight:bold;font-size:1.1rem;}.controls{display:flex;flex-direction:column;gap:15px;}.input-group{display:flex;flex-direction:column;gap:5px;}label{font-weight:600;color:#2c3e50;}input,button{padding:12px;border-radius:8px;border:1px solid #ddd;font-size:1rem;}button{background:linear-gradient(135deg,#3498db,#2980b9);color:white;border:none;cursor:pointer;transition:all 0.3s ease;font-weight:600;}button:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(0,0,0,0.3);}.button-group{display:flex;gap:10px;}.reset-btn{background:linear-gradient(135deg,#e74c3c,#c0392b);}.simulation-area{min-height:400px;background:white;border-radius:15px;overflow:hidden;position:relative;box-shadow:0 8px 32px rgba(0,0,0,0.3);flex:1;}#molecule-canvas{width:100%;height:100%;background:#1a1a2e;}.results{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:30px;flex-shrink:0;}.result-card{background:#ecf0f1;padding:25px;border-radius:12px;border-left:5px solid #3498db;min-height:100px;display:flex;flex-direction:column;justify-content:center;}.result-label{font-weight:700;font-size:1.1rem;color:#2c3e50;margin-bottom:10px;}.result-value{color:#3498db;font-size:1.4rem;font-weight:bold;}.energy-graph{margin-top:30px;height:250px;background:#f8f9fa;border-radius:12px;overflow:hidden;position:relative;padding:25px;border:1px solid #e0e0e0;flex-shrink:0;}.graph-container{width:100%;height:100%;position:relative;}.graph-line{fill:none;stroke:#3498db;stroke-width:2;}.graph-axis{stroke:#7f8c8d;stroke-width:1;}.loading{display:none;position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);color:white;justify-content:center;align-items:center;flex-direction:column;z-index:100;border-radius:15px;}.spinner{width:50px;height:50px;border:5px solid rgba(18,236,229,0.55);border-radius:50%;border-top-color:white;animation:spin 1s linear infinite;margin-bottom:15px;}@keyframes spin{to{transform:rotate(360deg);}}.element-category-1{background-color:#ff6b6b;}.element-category-2{background-color:#ffa726;}.element-category-3{background-color:#ffd54f;}.element-category-4{background-color:#81c784;}.element-category-5{background-color:#4dd0e1;}.element-category-6{background-color:#64b5f6;}.element-category-7{background-color:#ba68c8;}.element-category-8{background-color:#f06292;}.element-category-9{background-color:#90a4ae;}.element-category-10{background-color:#78909c;}.empty-cell{background:transparent;border:none;}footer{text-align:center;margin-top:40px;padding:20px;color:#ecf0f1;font-size:0.9rem;border-top:1px solid rgba(255,255,255,0.1);}.compound-input-section{margin:20px 0;padding:20px;background:white;border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,0.1);border:1px solid #e0e0e0;}.compound-form{display:flex;gap:10px;margin-bottom:15px;}.compound-input{flex:1;padding:12px;border-radius:8px;border:1px solid #ddd;font-size:1rem;}.compound-submit{background:linear-gradient(135deg,#9b59b6,#8e44ad);color:white;border:none;padding:12px 20px;border-radius:8px;cursor:pointer;font-weight:600;transition:all 0.3s ease;}.compound-submit:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(0,0,0,0.3);}.compound-results{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;}.spectroscopy-card{background:#f8f9fa;padding:15px;border-radius:8px;border-left:4px solid #9b59b6;}.spectroscopy-title{font-weight:700;color:#2c3e50;margin-bottom:10px;font-size:1.1rem;}.spectroscopy-data{color:#2c3e50;line-height:1.5;}.back-button{position:absolute;top:20px;left:20px;background:rgba(255,255,255,0.1);color:white;border:1px solid rgba(255,255,255,0.3);padding:10px 15px;border-radius:5px;cursor:pointer;font-size:14px;transition:all 0.3s ease;}.back-button:hover{background:rgba(255,255,255,0.2);transform:translateY(-2px);}.compound-analysis-title{color:#000000 !important;font-weight:700;}.reaction-display{background:#f8f9fa;padding:15px;border-radius:8px;margin-bottom:15px;border-left:4px solid #3498db;}.reaction-equation{font-weight:600;color:#2c3e50;font-size:1.1rem;margin-bottom:10px;}.predicted-product{color:#27ae60;font-weight:bold;}.element-selection-text{color:#9b59b6 !important;font-weight:700;}.compound-selection{margin:15px 0;padding:15px;background:#f8f9fa;border-radius:8px;border-left:4px solid #9b59b6;}.compound-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:10px;max-height:300px;overflow-y:auto;padding:5px;}.compound-item{background:white;padding:8px;border-radius:6px;border:1px solid #e0e0e0;cursor:pointer;transition:all 0.3s ease;text-align:center;font-size:0.8rem;}.compound-item:hover{transform:translateY(-2px);box-shadow:0 4px 8px rgba(0,0,0,0.1);border-color:#9b59b6;}.compound-item.selected{background:#9b59b6;color:white;border-color:#8e44ad;}.quick-compound-title{color:#8e44ad !important;font-weight:700;font-size:1.2rem;}.formula-text{color:#3498db !important;font-weight:bold;}.compound-name-text{color:#e74c3c !important;font-weight:600;}.selected-elements-title{color:#2ecc71 !important;font-weight:700;font-size:1.1rem;}.manual-input-text{color:#f39c12 !important;font-weight:600;}.axis-label{font-size:12px;fill:#2c3e50;font-weight:bold;}.compound-formula{color:#2980b9 !important;font-weight:bold;}.formula-display{color:#3498db !important;font-weight:bold;}.compound-name-display{color:#e74c3c !important;font-weight:600;}.compound-name{color:#c0392b !important;font-weight:600;}.compound-search{width:100%;padding:8px 12px;margin-bottom:10px;border:1px solid #ddd;border-radius:6px;font-size:0.9rem;}.compound-count{color:#7f8c8d;font-size:0.8rem;margin-bottom:10px;text-align:center;}