html,body{height:100%;margin:0;padding:0;overflow:hidden}:root{--teacher-primary:#2f7bff;--teacher-primary-light:#eaf2ff;--teacher-text-primary:#1d2129;--teacher-text-secondary:#4e5969;--teacher-text-tertiary:#86909c;--teacher-link-color:#2f7bff;--teacher-bg-body:#f7f8fa;--teacher-bg-card:#fff;--teacher-bg-hover:#f1f3f5;--teacher-border-color:#e5e6eb;--teacher-status-green:#00b42a;--teacher-status-green-bg:#e6fffb;--teacher-status-gray:#86909c;--teacher-status-gray-bg:#f1f3f5;--teacher-bg:white;--teacher-primary-light-bg:#2f7bff1a;--teacher-border:#e4e6e8;--teacher-white:#fff;--teacher-red:#f53f3f;--teacher-blue-tag-bg:#eaf2ff;--teacher-blue-tag-text:#2f7bff}body{background-color:var(--teacher-bg-body);color:var(--teacher-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif}*{box-sizing:border-box}.teacher-layout-wrapper{flex-direction:column;height:100%;display:flex}.teacher-layout-wrapper>header{flex-shrink:0}.teacher-main-container{flex:1;width:100%;max-width:1400px;margin:0 auto;padding:24px;overflow-y:auto}.teacher-main-full{flex:1;min-height:0;display:flex;overflow:hidden}.teacher-button-primary{background-color:var(--teacher-primary);color:#fff;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.teacher-button-primary:hover{background-color:#1a5cff;transform:translateY(-2px);box-shadow:0 4px 12px #2f7bff33}