*{margin:0;padding:0;box-sizing:border-box}body{font-family:Microsoft YaHei,PingFang SC,Helvetica Neue,Arial,sans-serif;background:linear-gradient(135deg,#ff9a9e 0%,#fecfef 50%,#fecfef 100%);min-height:100vh;display:flex;align-items:center;justify-content:center;color:#333}#app{width:100%;max-width:1000px;padding:20px}.app-container,.class-page{width:100%}.student-manager{background:rgba(255,255,255,.95);border-radius:20px;padding:30px;margin-bottom:30px;box-shadow:0 20px 40px #0000001a}.manager-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.manager-header h2{color:#333;margin:0}.current-list h3{color:#333;margin-bottom:15px}.student-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;max-height:300px;overflow-y:auto;padding:10px;background:#f8f9fa;border-radius:10px}.student-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:white;border-radius:8px;box-shadow:0 2px 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0}.history-section{background:#f8f9fa;border-radius:15px;padding:25px}.history-section h3{margin-bottom:20px;color:#333}.history-list{max-height:300px;overflow-y:auto}.history-item{background:white;border-radius:10px;padding:15px;margin-bottom:10px;cursor:pointer;transition:all .3s ease;border:2px solid transparent}.history-item:hover{border-color:#ff6b6b;transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.history-item:last-child{margin-bottom:0}.history-info{display:flex;align-items:center;gap:15px;margin-bottom:5px}.class-name{font-weight:700;color:#333;font-size:1.1rem}.student-count{background:#ff6b6b;color:#fff;padding:2px 8px;border-radius:12px;font-size:.9rem;font-weight:700}.gender-info,.history-time{color:#6c757d;font-size:.9rem}.page-header{text-align:center;margin-bottom:30px;padding:20px;background:rgba(255,255,255,.9);border-radius:15px;box-shadow:0 4px 15px #0000001a}.page-title{margin-bottom:20px;color:#333;font-size:2rem;font-weight:700}.container{background:rgba(255,255,255,.95);border-radius:20px;padding:40px;box-shadow:0 20px 40px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.title{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:30px;background:linear-gradient(45deg,#ff6b6b,#ee5a24);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.name-display{text-align:center;margin:40px 0;min-height:120px;display:flex;align-items:center;justify-content:center}.selected-name{font-size:3rem;font-weight:700;color:#ff6b6b;text-shadow:2px 2px 4px rgba(0,0,0,.1);transition:all .3s ease}.selected-name.highlight{transform:scale(1.1);color:#ee5a24}.controls{display:flex;gap:20px;justify-content:center;margin:30px 0;flex-wrap:wrap}.btn{padding:15px 30px;border:none;border-radius:50px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #0000001a}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00000026}.btn-primary{background:linear-gradient(45deg,#ff6b6b,#ee5a24);color:#fff}.btn-secondary{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff}.btn-success{background:linear-gradient(45deg,#2ed573,#7bed9f);color:#fff}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin:30px 0}.stat-card{background:linear-gradient(135deg,#ff9a9e 0%,#fecfef 100%);color:#333;padding:20px;border-radius:15px;text-align:center;box-shadow:0 4px 15px #0000001a}.stat-number{font-size:2rem;font-weight:700;margin-bottom:5px}.stat-label{font-size:.9rem;opacity:.9}.history{margin-top:30px}.history-title{font-size:1.3rem;font-weight:700;margin-bottom:15px;color:#333}.history-list{max-height:200px;overflow-y:auto;background:#f8f9fa;border-radius:10px;padding:15px}.history-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #e9ecef}.history-item:last-child{border-bottom:none}.history-name{font-weight:700;color:#ff6b6b}.history-time{font-size:.8rem;color:#6c757d}.gender-badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.9rem;font-weight:700;margin-left:15px}.gender-badge.male{background:linear-gradient(45deg,#4facfe,#00f2fe);color:#fff}.gender-badge.female{background:linear-gradient(45deg,#ff9a9e,#fecfef);color:#fff}.filters{display:flex;gap:15px;justify-content:center;margin:20px 0;flex-wrap:wrap}.filter-btn{padding:8px 16px;border:2px solid #ff6b6b;background:transparent;color:#ff6b6b;border-radius:25px;cursor:pointer;transition:all .3s ease;font-weight:700}.filter-btn.active,.filter-btn:hover{background:#ff6b6b;color:#fff}@media (max-width: 768px){.container{padding:20px;margin:10px}.title{font-size:2rem}.selected-name{font-size:2.5rem}.controls{flex-direction:column;align-items:center}.btn{width:100%;max-width:300px}.stats{grid-template-columns:1fr}}